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dc.contributor.authorDebes, John H.
dc.contributor.authorRen, Bin
dc.contributor.authorSchneider, Glenn
dc.date.accessioned2019-11-07T18:48:38Z
dc.date.available2019-11-07T18:48:38Z
dc.date.issued2019-06-13
dc.identifier.citationJohn H. Debes, Bin Ren, and Glenn Schneider "Pushing the limits of the coronagraphic occulters on Hubble Space Telescope/Space Telescope Imaging Spectrograph," Journal of Astronomical Telescopes, Instruments, and Systems 5(3), 035003 (13 June 2019). https://doi.org/10.1117/1.JATIS.5.3.035003en_US
dc.identifier.issn2329-4124
dc.identifier.doi10.1117/1.jatis.5.3.035003
dc.identifier.urihttp://hdl.handle.net/10150/635020
dc.description.abstractThe Hubble Space Telescope (HST)/Space Telescope Imaging Spectrograph (STIS) contains the only currently operating coronagraph in space that is not trained on the Sun. In an era of extreme-adaptive-optics-fed coronagraphs, and with the possibility of future space-based coronagraphs, we re-evaluate the contrast performance of the STIS CCD camera. The 50CORON aperture consists of a series of occulting wedges and bars, including the recently commissioned BAR5 occulter. We discuss the latest procedures in obtaining high-contrast imaging of circumstellar disks and faint point sources with STIS. For the first time, we develop a noise model for the coronagraph, including systematic noise due to speckles, which can be used to predict the performance of future coronagraphic observations. Further, we present results from a recent calibration program that demonstrates better than 10  −  6 point-source contrast at 0.6″, ranging to 3  ×  10  −  5 point-source contrast at 0.25″. These results are obtained by a combination of subpixel grid dithers, multiple spacecraft orientations, and postprocessing techniques. Some of these same techniques will be employed by future space-based coronagraphic missions. We discuss the unique aspects of STIS coronagraphy relative to ground-based adaptive-optics-fed coronagraphs.en_US
dc.description.sponsorshipHST GO program [13786, 15219]; State of Maryland grant through the Institute for Data Intensive Engineering and Science (IDIES)en_US
dc.language.isoenen_US
dc.publisherSPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERSen_US
dc.rightsCopyright © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectimage processingen_US
dc.subjectspeckleen_US
dc.subjectpoint spread functionsen_US
dc.subjectplanetsen_US
dc.subjectcharge-coupled-device imagersen_US
dc.titlePushing the limits of the coronagraphic occulters on Hubble Space Telescope/Space Telescope Imaging Spectrographen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Steward Observen_US
dc.identifier.journalJOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMSen_US
dc.description.noteOpen access articleen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.volume5
dc.source.issue03
dc.source.beginpage1
refterms.dateFOA2019-11-07T18:48:39Z


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Copyright © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License.
Except where otherwise noted, this item's license is described as Copyright © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License.