Measured  spectral performance of the complete filter set for the Rubin Observatories gigapixel camera

Robert W. Sprague; Michael Merrill; Patrick Flaherty; Michael Tatarek

doi:10.1117/12.2630413

29 August 2022 Measured spectral performance of the complete filter set for the Rubin Observatories gigapixel camera

Robert W. Sprague, Michael Merrill, Patrick Flaherty, Michael Tatarek

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121848J (2022) https://doi.org/10.1117/12.2630413
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

The 6 spectral filters for Rubin observatory span the spectral range from the near UV to the Near IR. Due to their large size and radius of curvature they presented a number of unique challenges. We delivered the last of these filters in July 2021 and in this paper present the measurements that we used to demonstrate the performance that is to be expected in the camera. As this is a survey instrument with a large field of view and a very large image plane the performance over the filters' area needed to be well characterized so that variation in the performance of the filter would not color the results when comparing observations taken through different regions of the lens. The deposition of each of the filters took about a week of coating, the measurement about a month.

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Robert W. Sprague, Michael Merrill, Patrick Flaherty, and Michael Tatarek "Measured spectral performance of the complete filter set for the Rubin Observatories gigapixel camera", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121848J (29 August 2022); https://doi.org/10.1117/12.2630413

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