تقرير
Calibration of VELC detectors on-board Aditya-L1 mission
| العنوان: | Calibration of VELC detectors on-board Aditya-L1 mission |
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| المؤلفون: | Mishra, Shalabh, Raja, K. Sasikumar, U, Sanal Krishnan V, Narra, Venkata Suresh, S, Bhavana Hegde, D., Utkarsha, Priyal V, Muthu, S, Pawan Kumar, V, Natarajan, B, Raghavendra Prasad, Singh, Jagdev, P, Umesh Kamath, S, Kathiravan, T, Vishnu, Suresha, P, Savarimuthu, Desai, Jalshri H, Kumaran, Rajiv, Sagar, Shiv, Kumar, Sumit, Bamrah, Inderjeet Singh, Kumar, Amit |
| سنة النشر: | 2024 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics |
| الوصف: | Aditya-L1 is the first Indian space mission to explore the Sun and solar atmosphere with seven multi-wavelength payloads, with Visible Emission Line Coronagraph (VELC) being the prime payload. It is an internally occulted coronagraph with four channels to image the Sun at 5000 \AA~ in the field of view 1.05 - 3 \rsun, and to pursue spectroscopy at 5303 \AA, 7892 \AA~ and 10747 \AA~ channels in the FOV (1.05 - 1.5 \rsun). In addition, spectropolarimetry is planned at 10747 \AA~ channel. Therefore, VELC has three sCMOS detectors and one InGaAs detector. In this article, we aim to describe the technical details and specifications of the detectors achieved by way of thermo-vacuum calibration at the CREST campus of the Indian Institute of Astrophysics, Bangalore, India. Furthermore, we report the estimated conversion gain, full-well capacity, and readout noise at different temperatures. Based on the numbers, it is thus concluded that it is essential to operate the sCMOS detectors and InGaAs detectors at $-5^{\circ}$ and $-17^{\circ}$ C, respectively, at the spacecraft level. Comment: Accepted for publication in Experimental Astronomy; 13 Pages, 5 Figures and 8 Tables |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1007/s10686-024-09922-2 |
| URL الوصول: | http://arxiv.org/abs/2403.07373 |
| رقم الأكسشن: | edsarx.2403.07373 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1007/s10686-024-09922-2 |
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