Frans Snik
Assistant Professor
- Name
- Dr.ir. F. Snik
- Telephone
- +31 71 527 8431
- snik@strw.leidenuniv.nl
- ORCID iD
- 0000-0003-1946-7009
Frans Snik works on various astronomical instrumentation projects at the Leiden Observatory. His research interest lie within astronomical polarimetry, (exo)planetary atmosphere characterization and solar and stellar magnetic fields.
More information about Frans Snik
News
Assistant Professor
- Science
- Sterrewacht
- Sterrewacht NOVA
- Mendillo C.B., Hewawasam K., Martel J., Potter T., Mukherjee S., Cook T.A., Chakrabarti S., Snik F., Doelman D.S., Sirbu D., Belikov R., Bendek E., Stapelfeldt K. & Wolff S.G. (2023), The PICTURE-C exoplanetary imaging balloon mission: second flight results and the transition to a new mission, PICTURE-D. Ruane G.J. (Ed.), Society of Photo-Optical Instrumentation Engineers (SPIE) Conference proceedings. SPIE optics + photonics 20 August 2023 - 24 August 2023. Proceedings of SPIE - International Society for Optical Engineering no. 12680. San Diego: SPIE. 126800F.
- Stockmans T.A., Snik F., Esposito M., Dijk C. van & Keller C.U. (2023), InSPECtor: an end-to-end design framework for compressive pixelated hyperspectral instruments, Applied Optics 62(27): 7185-7198.
- Liu P., Bohn A.J., Doelman D.S., Sutlieff B.J., Samland M., Kenworthy M.A., Snik F., Birkby J.L., Biller B.A., Males J.R., Morzinski K.M., Close L.M. & Otten G.P.P.L. (2023), Applying a temporal systematics model to vector Apodizing Phase Plate coronagraphic data: TRAP4vAPP, Astronomy and Astrophysics 674: A115.
- Doelman D.S., Ouellet M., Potier A., Ruane G., Gorkom K. van, Haffert S.Y., Douglas E.S. & Snik F. (2023), Laboratory demonstration of the triple-grating vector vortex coronagraph. Ruane G.J. (Ed.), Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. SPIE Optics + Photonics 20 August 2023 - 24 January 2024. Proceedings of SPIE - International Society for Optical Engineering no. 12680. Bellingham: Society of Photo-Optical Instrumentation Engineers. 126802C.
- Doelman D.S., Belaouchi H., Riggs A.J., Mennesson B., Ouellet M., Holstein R.G. van, Rietjens J., Hoevers H. & Snik F. (2023), FALCO simulations of high-contrast polarimetry with the Nancy Grace Roman Space Telescope coronagraph instrument. Ruane G.J. (Ed.), Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. SPIE Optics + Photonics 20 August 2023 - 24 January 2024. Proceedings of SPIE - International Society for Optical Engineering no. 12680. Bellingham: Society of Photo-Optical Instrumentation Engineers. 126800V.
- Anche R.M., Ashcraft J.N., Haffert S.Y., Millar-Blanchaer M.A., Douglas E.S., Snik F., Williams G., Holstein R.G. van, Doelman D.S., Gorkom K. van & Skidmore W. (2023), Polarization aberrations in next-generation giant segmented mirror telescopes (GSMTs): I. Effect on the coronagraphic performance, Astronomy and Astrophysics 672: A121.
- Desai N., König L., Por E., Juanola-Parramon R., Belikov R., Laginja I., Guyon O., Pueyo L., Fogarty K., Absil O., Altinier L., Baudoz P., Bidot A., Bonse M.J., Bott K., Brandl B.R., Carlotti A., Casewell S.L., Choquet E., Cowan N.B., Doelman D.S., Fowler J., Gebhard T.D., Gutierrez Y., Haffert S.Y., Herscovici-Schiller O., Hours A., Kenworthy M.A., Kleisioti E., Krasteva M., Landman R., Leboulleux L., Mazoyer J., Millar-Blanchaer M.A., Mouillet D., N'Diaye M., Snik F., Dam D.M. van, Gorkom K. van, van Kooten M. & Vaughan S.R. (2023), Integrated photonic-based coronagraphic systems for future space telescopes. Ruane G.J. (Ed.), Society of Photo-Optical Instrumentation Engineers (SPIE) conference series. SPIE Optics + Photonics 20 August 2023 - 24 January 2024. Proceedings of SPIE - International Society for Optical Engineering no. 12680. Bellingham: Society of Photo-Optical Instrumentation Engineers. 126801S.
- Vaughan S.R., Gebhard T.D., Bott K., Casewell S.L., Cowan N.B., Doelman D.S., Kenworthy M.A., Mazoyer J., Millar-Blanchaer M.A., Trees V.J.H., Stam D.M., Absil O., Altinier L., Baudoz P., Belikov R., Bidot A., Birkby J.L., Bonse M.J., Brandl B.R., Carlotti A., Choquet E., Dam D. van, Desai N., Fogarty K., Fowler J., Gorkom K. van, Gutierrez Y., Guyon O., Haffert S.Y., Herscovici-Schiller O., Hours A., Juanola-Parramon R., Kleisioti E., König L., van Kooten M., Krasteva M., Laginja I., Landman R., Leboulleux L., Mouillet D., N'Diaye M., Por E.H., Pueyo L. & Snik F. (2023), Chasing rainbows and ocean glints: inner working angle constraints for the Habitable Worlds Observatory, Monthly Notices of the Royal Astronomical Society 524(4): 5477-5485.
- Davies R., Absil O., Agapito G., Agudo Berbel A., Baruffolo A., Biliotti V., Black M., Bonaglia M., Bonse M., Briguglio R., Campana P., Cao Y., Carbonaro L., Cortes A., Cresci G., Dallilar Y., Dannert F., De Rosa R.J., Deysenroth M., Di Antonio I., Di Cianno A., Di Rico G., Doelman D.S., Dolci M., Dorn R., Eisenhauer F., Esposito S., Fantinel D., Ferruzzi D., Feuchtgruber H., Finger G., Förster Schreiber N.M., Gao X., Gemperlein H., Genzel R., Gillessen S., Ginski C., Glauser A.M., Glindemann A., Grani P., Hartl M., Hayoz J., Heida M., Henry D., Hofmann R., Huber H., Kasper M., Keller C.U., Kenworthy M.A., Kravchenko K., Kuntschner H., Lacour S., Lightfoot J., Lunney D., Lutz D., Macintosh M., Mannucci F., Marsset M., Modigliani A., Neeser M., Orban de Xivry G., Ott T., Pallanca L., Patapis P., Pearson D., Peña E., Percheron I., Puglisi A., Quanz S.P., Rabien S., Rau C., Riccardi A., Salasnich B., Schmid H.-M., Schubert J., Serra B., Shimizu T., Snik F., Sturm E., Tacconi L., Taylor W., Valentini A., Waring C., Wiezorrek E. & Xompero M. (2023), The enhanced resolution imager and spectrograph for the VLT, Astronomy and Astrophysics 674: A207.
- Holstein R.G. van, Keller C.U., Snik F. & Bos S.P. (2023), Polarization-dependent beam shifts upon metallic reflection in high-contrast imagers and telescopes, Astronomy and Astrophysics 677: A150.
- Long J.D., Males J.R., Haffert S.Y., Pearce L., Marley M.S., Morzinski K.M., Close L.M., Otten G.P.P.L., Snik F., Kenworthy M.A., Keller C.U., Hinz P., Monnier J.D., Weinberger A. & Tolls V. (2023), Improved companion mass limits for Sirius A with thermal infrared coronagraphy using a vector-apodizing phase plate and time-domain starlight-subtraction techniques, The Astronomical Journal 165(5): 216.
- Sutlieff B.J., Birkby J.L., Stone J.M., Doelman D.S., Kenworthy M.A., Panwar V., Bohn A.J., Ertel S., Snik F., Woodward C.E., Skemer A.J., Leisenring J.M., Strassmeier K.G. & Charbonneau D. (2023), Measuring the variability of directly imaged exoplanets using vector Apodizing Phase Plates combined with ground-based differential spectrophotometry, Monthly Notices of the Royal Astronomical Society 520(3): 4235-4257.
- Fowler J., Haffert S.Y., Kooten M.A.M. van, Landman R., Bidot A., Hours A., N'Diaye M., Absil O., Altinier L., Baudoz P., Belikov R., Bonse M.J., Bott K., Brandl B.R., Carlotti A., Casewell S.L., Choquet E., Cowan N.B., Desai N., Doelman D.S., Fogarty K., Gebhard T.D., Gutierrez Y., Guyon O., Herscovici-Schiller O., Juanola-Parramon R., Kenworthy M.A., Kleisioti E., König L., Krasteva M., Laginja I., Leboulleux L., Mazoyer J., Millar-Blanchaer M.A., Mouillet D., Por E., Pueyo L., Snik F., Dam D. van, Gorkom K. van & Vaughan S.R. (2023), Visible extreme adaptive optics on extremely large telescopes: towards detecting oxygen in Proxima Centauri b and analogs. Ruane G.J. (Ed.), Society of Photo-Optical Instrumentation Engineers (SPIE) conference series. SPIE Optical Engineering + Applications 12 September 2017 - 12 September 2017. Proceedings of SPIE - International Society for Optical Engineering no. 12680. San Diego: SPIE . 126801U.
- Mulder W., Patty C.H.L., Spadaccia S., Pommerol A., Demory B.-O., Keller C.U., Kühn J.G., Snik F. & Stam D.M. (2022), Spectropolarimetry of life: airborne measurements from a hot air balloon. Lakshminarayanan V., Creath K. & Shaw J.A. (Eds.), Society of Photo-Optical Instrumentation Engineers (SPIE) conference series. SPIE Astronomical Telescopes + Instrumentation 17 July 2022 - 23 July 2022 no. 12214: SPIE.
- Burggraaff O., Werther M., Boss E.S., Simis S.G.H. & Snik F. (2022), Accuracy and reproducibility of above-water radiometry with calibrated smartphone cameras using RAW data, Frontiers in Remote Sensing 3: 940096.
- Farret Jentink C., Mortier A., Snik F., Dorval P., Thompson S.J., Navarro R. & Naylor T. (2022), ABORAS: polarimetric, 10cm/s RV observations of the Sun as a star. In: Marshall H.K., Spryomilio J. & Usuda T. (Eds.) Proceedings of the SPIE ground-based and airborne telescopes IX. no. 12182 Bellingham: Society of Photo-Optical Instrumentation Engineers (SPIE).
- Salama M., Jensen-Clem R., Kooten M. van, Dillon D., Gerard B.L., Fowler J., Cetre S., Snik F. & Doelman D.S. (2022), Vector Zernike wavefront sensor on the Santa Cruz Extreme AO Lab (SEAL) testbed. Schreiber L., Schmidt D. & Vernet E. (Eds.), Proceedings of the SPIE adaptive optics systems VIII. SPIE Astronomical Telescopes + Instrumentation 17 July 2022 - 23 July 2022 no. 12185. Bellingham: Society of Photo-Optical Instrumentation Engineers (SPIE).
- Wijn A. de, Rouppe van der Voort L., Snik F., Leenaarts J. & Uitenbroek H. (2022), Obituary: Robert J. Rutten (1942-2022), Bulletin of the American Astronomical Society 54(1): 076.
- Doelman D.S., Stone J.M., Briesemeister Z.W., Skemer A.J.I., Barman T., Brock L.S., Hinz P.M., Bohn A., Kenworthy M., Haffert S.Y., Snik F., Ertel S., Leisenring J.M., Woodward C.E. & Skrutskie M.F. (2022), L-band integral field spectroscopy of the HR 8799 planetary system, The Astronomical Journal 163(5): 217.
- Kravchenko K., Dallilar Y., Absil O., Berbel A.A., Baruffolo A., Bonse M., Buron A., Cao Y., Cortes A., Dannert F., Davies R., De Rosa R.J., Deysenroth M., Doelman D.S., Eisenhauer F., Esposito S., Feuchtgruber H., Förster Schreiber N., Gao X., Gemperlein H., Genzel R., Gillessen S., Ginski C., Glauser A., Glindemann A., Grani P., Haguenauer P., Hartwig J., Hayoz J., Heida M., Kenworthy M.A., Kolb J., Kuntschner H., Lutz D., Liu D., MacIntosh M., Marsset M., Orban de Xivry G., Özdemir H., Puglisi A., Quanz S., Rau C., Riccardi A., Schuppe D., Snik F., Sturm E., Tacconi L., Taylor W.D. & Wiezorrek E. (2022), First on-sky results of ERIS at VLT. Evans C.J., Bryant J.J. & Motohara K. (Eds.), Ground-based and Airborne instrumentation for astronomy IX. Ground-based and Airborne Instrumentation for Astronomy IX 17 July 2022 - 22 July 2022 no. 12184. Bellingham: Society of Photo-Optical Instrumentation Engineers. 121845M.
- Stockmans T.A., Snik F., Smit J.M., Rietjens J.H.H., Esposito M., Van Dijk C. & Keller C.U. (2022), End-to-end design framework for compressed on-chip pixel-wise spectro-polarimeters. Babu S.R. & Norton C.D. (Eds.), Proceedings of the SPIE. SPIE Optical Engineering + Applications 21 August 2022 - 25 August 2022 no. 12236. Bellingham: Society of Photo-Optical Instrumentation Engineers (SPIE). 122360E.
- Derkink F.M., Doelman D.S., Dam D.M. van, Brenny B.J., Speet B., Van Brug H., Keller C.U. & Snik F. (2022), Imaging trace gas concentrations with a compact snapshot device that converts their spectral features into a polarization signal. Ientilucci E.J. & Bradley C.L. (Eds.), Proceedings of the SPIE. Optics + Photonics 21 August 2022 - 25 August 2022 no. 12235. Bellingham: Society of Photo-Optical Instrumentation Engineers. 122350L.
- Long J.D., Males J.R., Haffert S.Y., Close L.M., Morzinski K.M., Gorkom K. van, Lumbres J., Foster W., Hedglen A., Kautz M., Rodack A., Schatz L., Miller K., Doelman D.S., Bos S.P., Kenworthy M.A., Snik F. & Otten G.P.P.L. (2022), XPipeline: starlight subtraction at scale for MagAO-X. In: Schreiber L., Schmidt D. & Vernet E. (Eds.) Proceedings of the SPIE. no. 12185 Bellingham: Society of Photo-Optical Instrumentation Engineers. 121853P.
- Bettonvil F.C.M., Hammerschlag R.H., Keller C.U., Snik F. & et al. (2022), The European Solar Telescope, Astronomy & Astrophysics 666: A21.
- Kenworthy M.A., Codona J.L. & Snik F. (2021), Pupil-Plane phase apodization. In: Moore A.M. (Ed.), UV, Optical & IR Instrumentation: Part 2. The WSPC Handbook of Astronomical Instrumentation no. 3: World Scientific. 377-384.
- Doelman D.S., Snik F., Por E.H., Bos S.P., Otten G.P.P.L., Kenworthy M.A., Haffert S.Y., Wilby M.J., Bohn A.J., Sutlieff B.J., Miller K.L., Ouellet M., Boer J. de, Keller C.U., Escuti M.J., Shi S., Warriner N.Z., Hornburg K., Birkby J.L., Males J., Morzinski K.M., Close L.M., Codona J., Long J., Schatz L., Lumbres J., Rodack A., Van Gorkom K., Hedglen A., Guyon O., Lozi J., Groff T., Chilcote J., Jovanovic N., Thibault S., Jonge C. de, Allain G., Vallée C., Patel D., Côté O., Marois C., Hinz P., Stone J., Skemer A., Briesemeister Z., Boehle A., Glauser A.M., Taylor W., Baudoz P., Huby E., Absil O., Carlomagno B. & Delacroix C. (2021), Vector-apodizing phase plate coronagraph: design, current performance, and future development [Invited], Applied Optics 60(19): D52.
- Burggraaff O., Panchagnula S. & Snik F. (2021), Citizen science with colour blindness: a case study on the Forel-Ule scale, PLoS ONE 16(4): e0249755.
- Miller K.L., Bos S.P., Lozi J., Guyon O., Doelman D.S., Vievard S., Sahoo A., Deo V., Jovanovic N., Martinache F., Snik F. & Currie T. (2021), Spatial linear dark field control on Subaru/SCExAO: maintaining high contrast with a vAPP coronagraph, Astronomy & Astrophysics 646: 1-12 (A145).
- Kasper M., Cerpa Urra N., Pathak P., Bonse M., Nousiainen J., Engler B., Heritier C.T., Kammerer J., Leveratto S., Rajani C., Bristow P., Le Louarn M., Madec P.Y., Ströbele S., Verinaud C., Glauser A., Quanz S.P., Helin T., Keller C.U., Snik F., Boccaletti A., Chauvin G., Mouillet D., Kulcsár C. & Raynaud H.F. (2021), PCS: a roadmap for exoearth imaging with the ELT, The Messenger (ESO) 182: 38-43.
- Patty C.H.L., Kühn J.G., Lambrev P.H., Spadaccia S., Hoeijmakers J.H., Keller C.U., Mulder W., Pallichadath V., Poch O., Snik F., Stam D.M., Pommerol A. & Demory B.O. (2021), Biosignatures of the Earth: I. Airborne spectropolarimetric detection of photosynthetic life, Astronomy & Astrophysics 651: A68.
- Doelman D.S., Wardenier J.P., Tuthill P., Fitzgerald M.P., Lyke J., Sallum S., Norris B., Warriner N.Z., Keller C., Escuti M.J. & Snik F. (2021), First light of a holographic aperture mask: observation at the Keck OSIRIS Imager, Astronomy & Astrophysics 649: 1-16 (A168).
- Jensen-Clem R., Dillon D., Gerard B., Kooten M.A.M. van, Fowler J., Kupke R., Cetre S., Sanchez D., Hinz P., Laguna C., Doelman D. & Snik F. (2021), The Santa Cruz Extreme AO Lab (SEAL): design and first light. Shaklan S.B. & Ruane G.J. (Eds.), Proceedings of the society of photo-optical instrumentation engineers (SPIE) conference series. SPIE Optical Engineering and Applications 2021 1 August 2021 - 5 August 2021 no. 11823: SPIE.
- Boehle A., Doelman D.S., Konrad B.S., Snik F., Glauser A.M., Por E.H., Warriner N.Z., Shi S., Escuti M.J., Kenworthy M.A. & Quanz S.P. (2021), Cryogenic characterization of the grating vector apodizing phase plate coronagraph for the enhanced resolution imager and spectrograph at the very large telescope, Journal of Astronomical Telescopes, Instruments, and Systems 7(4): 045001.
- Bohn A.J., Ginski C., Kenworthy M.A., Mamajek E.E., Pecaut M.J., Mugrauer M., Vogt N., Adam C., Meshkat T., Reggiani M. & Snik F. (2021), Discovery of a directly imaged planet to the young solar analog YSES 2, Astronomy & Astrophysics 648: 1-15 (A73).
- Holstein R.G. van, Stolker T., Jensen-Clem R., Ginski C., Milli J., Boer J. de, Girard J.H., Wahhaj Z., Bohn A.J., Millar-Blanchaer M.A., Benisty M., Bonnefoy M., Chauvin G., Dominik C., Hinkley S., Keller C.U., Keppler M., Langlois M., Marino S., Ménard F., Perrot C., Schmidt T.O.B., Vigan A., Zurlo A. & Snik F. (2021), A survey of the linear polarization of directly imaged exoplanets and brown dwarf companions with SPHERE-IRDIS: first polarimetric detections revealing disks around DH Tau B and GSC 6214-210 B, Astronomy & Astrophysics 647: A21.
- 't Hart J.G.J., Holstein R.G. van, Bos S.P., Ruigrok J., Snik F., Lozi J., Guyon O., Kudo T., Zhang J., Jovanovic N., Norris B., Martinod M.A., Groff T.D., Chilcote J., Currie T., Tamura M., Vievard S., Sahoo A., Deo V., Ahn K., Martinache F. & Kasdin J. (2021), Full characterization of the instrumental polarization effects of the spectropolarimetric mode of SCExAO/CHARIS. In: Kupinski M.K., Shaw J.A. & Snik F. (Eds.) Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. no. 11833: SPIE. 118330O.
- Bos S.P., Miller K.L., Lozi J., Guyon O., Doelman D.S., Vievard S., Sahoo A., Deo V., Jovanovic N., Martinache F., Currie T. & Snik F. (2021), First on-sky demonstration of spatial Linear Dark Field Control with the vector-Apodizing Phase Plate at Subaru/SCExAO, Astronomy & Astrophysics 653: A42.
- Kenworthy M.A., Bohn A.J., Ginski C., Reggiani M., Meshkat T., Mamajek E., Pecaut M. & Snik F. (2021), The Young Suns Exoplanet Survey: imaging infant planets around young, solar analogs, EPSC Abstracts. European Planetary Science Congress 13 September 2021 - 24 September 2021 no. 15: Europlanet Society.
- Klindzic D., Stam D.M., Snik F., Keller C.U., Hoeijmakers H.J., Dam D.M. van, Willebrands M., Karalidi T., Pallichadath V., Dijk C.N. van & Esposito M. (2021), LOUPE: observing Earth from the Moon to prepare for detecting life on Earth-like exoplanets, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 379(2188): 20190577.
- Snellen I.A.G., Snik F., Kenworthy M.A., Albrecht S., Anglada-Escudé G., Baraffe I., Baudoz P., Benz W., Beuzit J.-L., Biller B., Birkby J.L., Boccaletti A., Boekel R. van, Boer J. de, Brogi M., Buchhave L., Carone L., Claire M., Claudi R., Demory B.-O., Désert J.-M., Desidera S., Gaudi B.S., Gratton R., Gillon M., Grenfell J.L., Guyon O., Henning T., Hinkley S., Huby E., Janson M., Helling C., Heng K., Kasper M., Keller C.U., Krause O., Kreidberg L., Madhusudhan N., Lagrange A.-M., Launhardt R., Lenton T.M., Lopez-Puertas M., Maire A.-L., Mayne N., Meadows V., Mennesson B., Micela G., Miguel Y., Milli J., Min M., Mooij E. de, Mouillet D., N'Diaye M., D'Orazi V., Palle E., Pagano I., Piotto G., Queloz D., Rauer H., Ribas I., Ruane G., Selsis F., Sozzetti A., Stam D., Stark C.C., Vigan A. & Visser P. de (2021), Detecting life outside our solar system with a large high-contrast-imaging mission, Experimental Astronomy : .
- Mendillo C.B., Hewawasam K., Martel J., Cook T.A., Chakrabarti S., Snik F. & Doelman D.S. (2021), Dual-polarization electric field conjugation and applications for vector vortex coronagraphs. Shaklan S.B. & Ruane G.J. (Eds.), Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. SPIE Optical Engineering and Applications 2021 1 August 2021 - 5 August 2021 no. 11823: SPIE. 118231T.
- Zhang Y., Snellen I.A.G., Bohn A.J., Mollière P., Ginski C., Hoeijmakers H.J., Kenworthy M.A., Mamajek E.E., Meshkat T., Reggiani M. & Snik F. (2021), The 13CO-rich atmosphere of a young accreting super-Jupiter, Nature 595(7867): 370-372.
- Kupinski M.K., Shaw J.A. & Snik F. (2021), Polarization science and remote sensing X. Proceedings of SPIE - International Society for Optical Engineering no. 11833. Bellingham: Society of Photo-Optical Instrumentation Engineers.
- Sutlieff B.J., Bohn A.J., Birkby J.L., Kenworthy M.A., Morzinski K.M., Doelman D.S., Males J.R., Snik F., Close L.M., Hinz P.M. & Charbonneau D. (2021), High-contrast observations of brown dwarf companion HR 2562 B with the vector Apodizing Phase Plate coronagraph, Monthly Notices of the Royal Astronomical Society 506(3): 3224-3238.
- Klindžić D., Snik F., Stam D.M., Keller C.U., Stockmans T., Hoeijmakers H.J., Dam D.M. van, Willebrands M., Karalidi T., Pallichadath V., Dijk C.N. van & Esposito M. (2021), Pale polarized dots: spectropolarimetry of the Earth as an exoplanet with LOUPE. In: Kupinski M.K., Shaw J.A. & Snik F. (Eds.) Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. no. 11833: SPIE. 1183306.
- Klindžić D., Stam D., Snik F., Keller C.U., Pallichadath V., Dijk C. van, Esposito M. & Dam D.M. van (2021), LOUPE: observing the Earth from the Moon to prepare for detecting life on Earth-like exoplanets, European Planetary Science Congress. European Planetary Science Congress 13 September 2021 - 24 September 2021 no. 15: Europlanet Society. EPSC2021-657.
- Mulder W., Doelman D.S., Keller C.U., Patty C.H.L. & Snik F. (2021), Spatial polarization modulators: distinguishing diffraction effects from spatial polarization modulation. Kupinski M.K, Shaw J.H & Snik F. (Eds.), Proceedings Polarization Science and Remote Sensing X. SPIE Optical Engineering and Applications 2021 1 August 2021 - 5 August 2021 no. 11833: SPIE - International Society for Optics and Photonics. 118330M.
- Haffert S.Y., Por E.H., Keller C.U., Kenworthy M.A., Doelman D.S., Snik F. & Escuti M.J. (2020), The Single-mode Complex Amplitude Refinement (SCAR) coronagraph. II. Lab verification, and toward the characterization of Proxima b, Astronomy & Astrophysics 635: A56.
- Holstein R.G. van, Girard J.H., Boer J. de, Snik F., Milli J., Stam D.M., Ginski C., Mouillet D., Wahhaj Z., Schmid H.M., Keller C.U., Langlois M., Dohlen K., Vigan A., Pohl A., Carbillet M., Fantinel D., Maurel D., Origné A., Petit C., Ramos J., Rigal F., Sevin A., Boccaletti A., Le Coroller H., Dominik C., Henning T., Lagadec E., Ménard F., Turatto M., Udry S., Chauvin G., Feldt M. & Beuzit J.-L. (2020), Polarimetric imaging mode of VLT/SPHERE/IRDIS. II. Characterization and correction of instrumental polarization effects, Astronomy & Astrophysics 633: A64.
- Burggraaff O., Perduijn A.B., Hek R.F. van, Schmidt N., Keller C.U. & Snik F. (2020), A universal smartphone add-on for portable spectroscopy and polarimetry: iSPEX 2. George T. & Islam M.S. (Eds.), Micro- and Nanotechnology Sensors, Systems, and Applications XII. SPIE Defense + Commercial Sensing 2020 27 April 2020 - 8 May 2020 no. 11389: SPIE. 84-99.
- Doelman D.S., Por E.H., Ruane G., Escuti M.J. & Snik F. (2020), Minimizing the polarization leakage of geometric-phase coronagraphs with multiple grating pattern combinations, Publications of the Astronomical Society of the Pacific 132(1010): 045002.
- Bohn A.J., Kenworthy M.A., Ginski C., Rieder S., Mamajek E.E., Meshkat T., Pecaut M.J., Reggiani M., Boer J. de, Keller C.U., Snik F. & Southworth J. (2020), Two directly imaged, wide-orbit giant planets around the young, solar analog TYC 8998-760-1, Astrophysical Journal Letters 898(1): L16.
- Bohn A.J., Kenworthy M.A., Ginski C., Manara C.F., Pecaut M.J., Boer J. de, Keller C.U., Mamajek E.E., Meshkat T., Reggiani M., Todorov K.O. & Snik F. (2020), The young suns exoplanet survey: detection of a wide-orbit planetary-mass companion to a solar-type Sco-Cen member, Monthly Notices of the Royal Astronomical Society 492(1): 431-443.
- Millar-Blanchaer M.A., Girard J.H., Karalidi T., Marley M.S., Holstein R.G. van, Sengupta S., Mawet D., Kataria T., Snik F., Boer J. de, Jensen-Clem R., Vigan A. & Hinkley S. (2020), Detection of polarization due to cloud bands in the nearby Luhman 16 brown dwarf binary, The Astrophysical Journal 894(1): 42.
- Jensen-Clem R., Millar-Blanchaer M.A., Holstein R.G. van, Mawet D., Graham J., Sengupta S., Marley M.S., Snik F., Vigan A., Hinkley S., Boer J. de, Girard J.H., De Rosa R.J., Bowler B.P., Wiktorowicz S.J., Perrin M.D., Crepp J.R. & Macintosh B. (2020), A search for polarized thermal emission from directly imaged exoplanets and brown dwarf companions to nearby stars, The Astronomical Journal 160(6): 286.
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- Ginski C., Benisty M., Holstein R.G. van, Juhász A., Schmidt T.O.B., Chauvin G., Boer J. de, Wilby M., Manara C.F., Delorme P., Ménard F., Pinilla P., Birnstiel T., Flock M., Keller C., Kenworthy M., Milli J., Olofsson J., Pérez L., Snik F. & Vogt N. (2018), First direct detection of a polarized companion outside a resolved circumbinary disk around CS Chamaeleonis, Astronomy & Astrophysics 616: A79.
- Lozi J., Guyon O., Jovanovic N., Goebel S., Pathak P., Skaf N., Sahoo A., Norris B., Martinache F., N'Diaye M., Mazin B., Walter A.B., Tuthill P., Kudo T., Kawahara H., Kotani T., Ireland M., Cvetojevic N., Huby E., Lacour S., Vievard S., Groff T.D., Chilcote J.K., Kasdin J., Knight J., Snik F., Doelman D., Minowa Y., Clergeon C., Takato N., Tamura M., Currie T., Takami H. & Hayashi M. (2018), SCExAO, an instrument with a dual purpose: perform cutting-edge science and develop new technologies. Close L.M., Schreiber L. & Schmidt D. (Eds.), Adaptive Optics Systems VI. SPIE Astronomical Telescopes + Instrumentation 10 June 2018 - 15 June 2018 no. 10703: SPIE. 1070359.
- Long J.D., Males J.R., Morzinski K.M., Close L.M., Snik F., Kenworthy M.A., Otten G.P.P.L., Monnier J., Tolls V. & Weinberger A. (2018), The hunt for Sirius Ab: comparison of algorithmic sky and PSF estimation performance in deep coronagraphic thermal-IR high contrast imaging. Close L.M., Schreiber L. & Schmidt D. (Eds.), Proceedings Adaptive Optics Systems VI. SPIE Astronomical Telescopes + Instrumentation 10 June 2018 - 15 June 2018 no. 10703: SPIE. 107032T.
- Miller K., Males J.R., Guyon O., Close L.M., Doelman D., Snik F., Por E., Wilby M.J., Bohlman C., Lumbres J., Gorkom K. van, Kautz M., Rodack A., Knight J., Jovanovic N., Morzinski K. & Schatz L. (2018), Focal plane wavefront sensing and control strategies for high-contrast imaging on the MagAO-X instrument. Close L.M., Schreiber L. & Schmidt D. (Eds.), Proceeding, Adaptive Optics Systems VI. SPIE Astronomical Telescopes + Instrumentation 10 June 2018 - 15 June 2018 no. 10703: SPIE. 107031T.
- Piskunov N., Stempels E., Lavail A., Escuti M., Snik F., Dolgopolov A., Rozel M., Durandet C., Hatzes A., Bristow P., Brucalassi A., Cumani C., Dorn R.J., Haimerl A., Heiter U., Hinterschuster R., Follert R., Ives D., Jung Y., Kerber F., Klein B., Lizon J.-L., Marquart T., Molina-Conde I., Pasquini L., Paufique J., Oliva E., Reiners A., Seemann U., Stegmeier J., Tordo S. & Valenti E. (2018), A unique infrared spectropolarimetric unit for CRIRES+. Evans C.J., Simard L. & Takami H. (Eds.), Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. SPIE Astronomical Telescopes + Instrumentation 10 June 2018 - 15 June 2018 no. 10702: SPIE. 1070234.
- Wilby M.J., Keller C.U., Snik F., Korkiakoski V.A. & Pietrow A.G.M. (2017), The coronagraphic Modal Wavefront Sensor: a hybrid focal-plane sensor for the high-contrast imaging of circumstellar environments, 597: A112.
- Patty C.H.L., Visser L.J.J., Ariese F., Buma W.J., Sparks W.B., Spanning R.J.M., Röling W.F.M. & Snik F. (2017), Circular spectropolarimetric sensing of chiral photosystems in decaying leaves, Journal of Quantitative Spectroscopy & Radiative Transfer 189: 303-311.
- Mahapatra G., Stam D.M., Rossi L., Rodenhuis M., Snik F. & Keller C.U. (2017), Investigating circular patterns in linear polarization observations of Venus, Proceedings from the European Planetary Science Congress 2017. European Planetary Science Congress 23 April 2017 - 28 April 2017. European Planetary Science Congress no. Volume 11: Copernicus. EPSC2017-885.
- Holstein R.G., Snik F., Girard J.H., Boer J. de, Ginski C., Keller C.U., Stam D.M., Beuzit J.-L., Mouillet D., Kasper M., Langlois M., Zurlo A., Kok R.J. & Vigan A. (2017), Combining angular differential imaging and accurate polarimetry with SPHERE/IRDIS to characterize young giant exoplanets. Shaklan S. (Ed.), Proceedings Techniqes and Instrumentation for Detection of Exoplanets VIII. SPIE Optical Engineering + Applications 12 September 2017 - 12 September 2017 no. 10400: SPIE. 1040015.
- Boer J. de, Girard J.H., Canovas H., Min M., Sitko M., Ginski C., Jeffers S.V., Mawet D., Milli J., Rodenhuis M., Snik F. & Keller C.U. (2017), BP Piscium: its flaring disc imaged with SPHERE/ZIMPOL*, 466: L7-L12.
- Shaw J.A. & Snik F. (Eds.) (2017), Polarization Science and Remote Sensing VIII. Proceedings of SPIE - International Society for Optical Engineering no. 10407: SPIE.
- Doelman D.S., Snik F., Warriner N.Z. & Escuti M.J. (2017), Patterned liquid-crystal optics for broadband coronagraphy and wavefront sensing, Proceedings SPIE 10400, Techniqes and Instrumentation for Detection of Exoplanets VIII. SPIE Optical Engineering + Applications 12 September 2017 - 12 September 2017 no. 10400: SPIE. 104000U.
- Harrington D.M., Snik F., Keller C.U., Sueoka S.R. & Harten G. van (2017), Polarization modeling and predictions for DKIST part 2: application of the Berreman calculus to spectral polarization fringes of beamsplitters and crystal retarders, Journal of Astronomical Telescopes, Instruments, and Systems 3(4): 048001.
- Harrington D.M., Snik F., Keller C.U., Sueoka S.R. & Harten G. (2017), Polarization modeling and predictions for DKIST part 2: application of the Berreman calculus to spectral polarization fringes of beamsplitters and crystal retarders, Proceedings Volume 10407, Polarization Science and Remote Sensing VIII. SPIE Optical Engineering + Applications 12 September 2017 - 12 September 2017 no. 10407: SPIE. 104070A.
- Otten G.P.P.L., Snik F., Kenworthy M.A., Keller C.U., Males J.R., Morzinski K.M., Close L.M., Codona J.L., Hinz P.M., Hornburg K.J., Brickson L.L. & Escuti M.J. (2017), On-sky Performance Analysis of the Vector Apodizing Phase Plate Coronagraph on MagAO/Clio2, The Astrophysical Journal 834: 175.
- Mousis O., Atkinson D.H., Amato M., Aslam S., Atreya S.K., Blanc M., Bolton S.J., Brugger B., Calcutt S., Cavalié T., Charnoz S., Coustenis A., Deleuil M., Ferri F., Fletcher L.N., Guillot T., Hartogh P., Holland A., Hueso R., Keller C., Kessler E., Lebreton J.-P., leese M., Lellouch E., Levacher P., Marty B., Morse A., Nixon C., Reh K.R., Renard J.-B., Sanchez-Lavega A., Schmider F.-X., Sheridan S., Simon A.A., Snik F., Spilker T.R., Stam D.M., Venkatapathy E., Vernazza P., Waite J.H. & Wurz P. (2016), HERA: an atmospheric probe to unveil the depths of Saturn, AAS/Division for Planetary Sciences Meeting Abstracts. no. 48 123.28.
- Hogenboom M., Stam D., Rossi L. & Snik F. (2016), Modelling the circular polarisation of Earth-like exoplanets: constraints on detecting homochirality, EGU General Assembly Conference Abstracts. no. 18 4721.
- Kenworthy M.A., Absil O., Agócs T., Pantin E., Quanz S., Stuik R., Snik F. & Brandl B.R. (2016), High-contrast imaging with METIS, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. no. 9908 9908A6.
- Boer J. de, Salter G., Benisty M., Vigan A., Boccaletti A., Pinilla Ortiz P.A., Ginski C., Juhasz A., Maire A., Messina S., Desidera S., Cheetham A., Girard J., Wahhaj Z., Langlois M., Bonnefoy M., Beuzit J., Buenzli E., Chauvin G., Dominik C., Feldt M., Gratton R., Hagelberg J., Isella A., Janson M., Keller C., Lagrange A., Lannier J., Menard F., Mesa D., Mouillet D., Mugrauer M., Peretti S., Perrot C., Sissa E., Snik F., Vogt N. & Zurlo A. (2016), Multiple rings in the transition disk and companion candidates around RX J1615.3-3255. High contrast imaging with VLT/SPHERE, Astronomy & Astrophysics 595: A114.
- Mousis O., Atkinson D.H., Spilker T., Venkatapathy E., Poncy J., Frampton R., Coustenis A., Reh K., Lebreton J.-P., Fletcher L.N., Hueso R., Amato M.J., Colaprete A., Ferri F., Stam D., Wurz P., Atreya S., Aslam S., Banfield D.J., Calcutt S., Fischer G., Holland A., Keller C.U., Kessler E., Leese M., Levacher P., Morse A., Muñoz O., Renard J.-B., Sheridan S., Schmider F.-X., Snik F., Waite J.H., Bird M., Cavalié T., Deleuil M., Fortney J., Gautier D., Guillot T., Lunine J.I., Marty B., Nixon C., Orton G.S. & Sánchez-Lavega A. (2016), The Hera Saturn entry probe mission, Planetary and Space Science 130(1 October 2016): 80-103.
- Males J.R., Close L.M., Guyon O., Morzinski K.M., Hinz P., Esposito S., Pinna E., Xompero M., Briguglio R., Riccardi A., Puglisi A., Mazin B., Ireland M.J., Weinberger A., Conrad A., Kenworthy M., Snik F., Otten G.P.P.L., Jovanovic N. & Lozi J. (2016), The path to visible extreme adaptive optics with MagAO-2K and MagAO-X, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. no. 9909 990952.
- De Ugarte Postigo A., Roming P., Thöne C.C., Horst A.J. van der, Pope S., García Vargas M.L., Sánchez-Blanco E., Maldonado Medina M., Content R., Snik F., Killough R., Winters G., Persson K., Jeffers S., Riva A., Bianco A. & Zanutta A. (2016), OCTOCAM: a fast multi-channel imager and spectrograph proposed for the Gemini Observatory. no. 9908: Proc. SPIE. id. 990840.
- Land-Zandstra A.M., Devilee J.L.A., Snik F., Buurmeijer F. & Broek J.M. van den (2016), Citizen science on a smartphone: Participants’ motivations and learning, Public Understanding of Science 25(1): 45-60.
- Wilby M.J., Keller C.U., Haffert S., Korkiakoski V.A., Snik F. & Pietrow A.G.M. (2016), Designing and testing the coronagraphic Modal Wavefront Sensor: a fast non-common path error sensor for high-contrast imaging, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. SPIE no. 9909 990921.
- Snik F., Keller C.U., Wijnen M., Peters H., Derks R. & Smulders E. (2016), FlySPEX: a flexible multi-angle spectropolarimetric sensing system. no. 9853: Proc. SPIE. id. 985308.
- Thompson S.J., Queloz D., Baraffe I., Brake M., Dolgopolov A., Fisher M., Fleury M., Geelhoed J., Hall R., González Hernández J.I., Horst R. ter, Kragt J., Navarro R., Naylor T., Pepe F., Piskunov N., Rebolo R., Sander L., Ségransan D., Seneta E., Sing D., Snellen I., Snik F., Spronck J., Stempels E., Sun X., Santana Tschudi S. & Young J. (2016), HARPS3 for a roboticized Isaac Newton Telescope. no. 9908: Proc. SPIE. id. 99086F.
- Hoeijmakers H.J., Arts M.L.J., Snik F., Keller C.U. & Kuiper J.M. (2016), Design trade-off and proof of concept for LOUPE, the Lunar Observatory for Unresolved Polarimetry of Earth, Optics Express 24(19): 21435.
- Kochukhov O., Rusomarov N., Valenti J.A., Stempels H.C., Snik F., Rodenhuis M., Piskunov N., Makaganiuk V., Keller C.U. & Johns-Krull C.M. (2015), Magnetic field topology and chemical spot distributions in the extreme Ap star HD 75049, Astronomy & Astrophysics 574: A79.
- Di Noia A., Hasekamp O.P., Harten G. van, Rietjens J.H.H., Smit J.M., Snik F., Henzing J.S., Boer J. de, Keller C.U. & Volten H. (2015), Use of neural networks in ground-based aerosol retrievals from multi-angle spectropolarimetric observations, Atmospheric Measurement Techniques 8(1): 281-299.
- Snik F., Harten G. van, Alenin A.S., Vaughn I.J. & Tyo J.S. (2015), A multi-domain full-Stokes polarization modulator that is efficient for 300-2500nm spectropolarimetry. Shaw J.A. & LeMaster D.A. (Eds.), Proceedings Polarization Science and Remote Sensing VII. SPIE Optical Engineering + Applications 12 September 2017 - 12 September 2017. Proceedings of SPIE no. 9613. Washington, U.S.A.: SPIE. 9613.
- Snik F., Otten G., Kenworthy M., Mawet D. & Escuti M. (2014), Combining vector-phase coronagraphy with dual-beam polarimetry, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. no. 9147.
- Snik F., Rietjens J., Apituley A., Volten H., Mijling B., Di Noia A., Heikamp S., Heinsbroek R., Hasekamp O., Smit J., Vonk J., Stam D., Harten G., Boer J. & Keller C. (2014), Mapping atmospheric aerosols with a citizen science network of smartphone spectropolarimeters, Geophysical Research Letters 41: 7351-7358.
- Noia A. di, Hasekamp O., Harten G., Rietjens J., Smit J., Snik F., Henzing J., Boer J., Keller C. & Volten H. (2014), Use of neural networks in ground-based aerosol retrievals from multi-angle spectropolarimetric observations, Atmospheric Measurement Techniques Discussions 7: 9047-9094.
- Boer J., Girard J., Mawet D., Snik F., Keller C. & Milli J. (2014), Characterizing instrumental effects on polarization at a Nasmyth focus using NaCo, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. no. 9147 87.
- Otten G., Snik F., Kenworthy M., Miskiewicz M. & Escuti M. (2014), Performance characterization of a broadband vector Apodizing Phase Plate coronagraph, Optics Express 22(24): 30287-30314.
- Snik F., Craven-Jones J., Escuti M., Fineschi S., Harrington D., De Martino A., Mawet D., Riedi J. & Tyo J.S. (2014), An overview of polarimetric sensing techniques and technology with applications to different research fields, Proceedings of SPIE - International Society for Optical Engineering 9099: 90990B.
- Harten G., Boer J., Rietjens J., Di Noia A., Snik F., Volten H., Smit J., Hasekamp O., Henzing J. & Keller C. (2014), Atmospheric aerosol characterization with a ground-based SPEX spectropolarimetric instrument, Atmospheric Measurement Techniques 7(12): 4341-4351.
- Juan Ovelar M. de, Snik F., Keller C.U. & Venema L. (2014), Instrumental polarisation at the Nasmyth focus of the E-ELT, Astronomy & Astrophysics 562: A8.
- Keller C., Korkiakoski V., Rodenhuis M. & Snik F. (2014), Towards Polarimetric Exoplanet Imaging with ELTs. Apai D. & Gabor P. (Eds.), Search for Life Beyond the Solar System. Exoplanets, Biosignatures {\amp} Instruments. 4.
- Otten G., Snik F., Kenworthy M., Miskiewicz M., Escuti M. & Codona J. (2014), The vector apodizing phase plate coronagraph: prototyping, characterization and outlook, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. no. 9151.
- Pertenais M., Neiner C., Parès L., Petit P., Snik F. & Harten G. (2014), UVMag: Space UV and visible spectropolarimetry, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. no. 9144 3.
- Kenworthy M., Quanz S., Otten G., Meshkat T., Codona J., Snik F., Meyer M., Kasper M. & Girard J. (2014), Successes and challenges of the APP Coronagraph. Booth M., Matthews B. & Graham J. (Eds.), IAU Symposium. no. 299 40-41.
- Rodenhuis M., Snik F., Harten G., Hoeijmakers J. & Keller C. (2014), Five-dimensional optical instrumentation: combining polarimetry with time-resolved integral-field spectroscopy, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series. no. 9099 0.
- Hoeijmakers H., Snik F., Stam D. & Keller C. (2014), LOUPE: Spectropolarimetry of the Earth from the surface of the Moon, European Planetary Science Congress 2014, EPSC Abstracts, Vol.~9, id.~EPSC2014-574 9: 574.
- Harten G., Snik F., Rietjens J., Martijn Smit J. & Keller C. (2014), Spectral line polarimetry with a channeled polarimeter, Applied Optics 53: 4187.
- Johns-Krull C., Chen W., Valenti J., Jeffers S., Piskunov N., Kochukhov O., Makaganiuk V., Stempels H., Snik F., Keller C.U. & Rodenhuis M. (2013), Magnetically Controlled Accretion on the Classical T Tauri Stars GQ Lupi and TW Hydrae, The Astrophysical Journal 765(1): 11.
- Snik F. & Keller C. (2013), Astronomical Polarimetry: Polarized Views of Stars and Planets. In: Oswalt T. & Bond H. (Eds.), Planets, Stars and Stellar Systems. Volume 2: Astronomical Techniques, Software and Data 175.
- Johns-Krull C., Chen W., Valenti J., Jeffers S., Piskunov N., Kochukhov O., Makaganiuk V., Stempels H., Snik F., Keller C. & Rodenhuis M. (2013), HARPS Spectropolarimetry of the Classical T Tauri Stars GQ Lup and TW Hya, American Astronomical Society Meeting Abstracts. no. 221 #256.14.
- Kochukhov O., Makaganiuk V., Piskunov N., Jeffers S., Johns-Krull C., Keller C.U., Rodenhuis M., Snik F., Stempels H. & Valenti J. (2013), Are there tangled magnetic fields on HgMn stars?, Astronomy & Astrophysics 554: A61.
- Rusomarov N., Kochukhov O., Piskunov N., Jeffers S., Johns-Krull C., Keller C.U., Makaganiuk V., Rodenhuis M., Snik F., Stempels H. & Valenti J. (2013), Three-dimensional magnetic and abundance mapping of the cool Ap star HD 24712 . I. Spectropolarimetric observations in all four Stokes parameters, Astronomy & Astrophysics 558: A8.
- Snik F., Harpspol Team & X-Shooter-Pol Team (2013), The polarimeters for HARPS and X-shooter. Pugliese G., De Koter A. & Wijburg M. (Eds.), 370 Years of Astronomy in Utrecht. no. 470 401.
- Cunningham C.R., Evans C.J., Molster F., Kendrew S., Kenworthy M.A. & Snik F. (2012), Innovative technology for optical and infrared astronomy. Navarro R., Cunningham C.R. & Prieto E. (Eds.), Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II. SPIE Astronomical Telescopes Instrumentation 1 July 2012 - 6 July 2012 no. 8450: SPIE. 845031.
- Snik F., Otten G., Kenworthy M.A., Miskiewicz M., Escuti M., Packham C. & Codona J. (2012), The vector-APP: a broadband apodizing phase plate that yields complementary PSFs. Navarro R., Cunningham C.R. & Prieto E. (Eds.), Proceedings SPIE. Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II. SPIE Astronomical Telescopes Instrumentation 1 July 2012 - 6 July 2012 no. 8450: SPIE. 84500M.
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