AUTHOR=Orozco Suárez David , Álvarez García Daniel , López Jiménez Antonio C. , Balaguer Jiménez María , Hernández Expósito David , Labrousse Pierre , Bailén Francisco J. , Bustamante Díaz Isabel , Bailón Martínez Eduardo , Aparicio del Moral Beatriz , Morales Fernández José M. , Sánchez Gómez Antonio , Tobaruela Abarca Ángel , Moreno Mantas Antonio J. , Ramos Más José L. , Pérez Grande Isabel , Piqueras Carreño Javier , Katsukawa Yukio , Kubo Masahito , Kawabata Yusuke , Oba Takayoshi , Rodríguez Valido Manuel , Magdaleno Castelló Eduardo , Del Toro Iniesta Jose Carlos 

TITLE=SPGCam: A specifically tailored camera for solar observations

JOURNAL=Frontiers in Astronomy and Space Sciences

VOLUME=Volume 10 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/astronomy-and-space-sciences/articles/10.3389/fspas.2023.1167540

DOI=10.3389/fspas.2023.1167540

ISSN=2296-987X

ABSTRACT=Designing a new astronomical instrument typically challenges the available cameras in the3
market. In many cases, no camera can fulfill the requirements of the instrument in terms of4
photon budget, speed, and even interfaces with the rest of the instrument. In this situation, the5
only options are to either downgrade the performance of the instrument or design new cameras6
from scratch, provided it is possible to identify a compliant detector. The latter is the case of7
the SPGCams, the cameras developed to be used with the Tunable Magnetograph (TuMag; Del8
Toro Iniesta et al., 2023) and the Sunrise Chromospheric Infrared spectroPolarimeter (SCIP;9
Katsukawa et al., 2023) for the SUNRISE III mission (Solanki and et al., 2023). SPGCams have10
been designed, developed and built entirely in-house, by the Solar Physics Group (SPG) at the11
Instituto de Astrof ́ısica de Andaluc ́ıa (IAA-CSIC). We report here on the scientific rationale and12
system engineering requirements set by the two instruments that drove the development, as well13
as on the technical details and trade-offs used to fulfill the specifications. The cameras were fully14
verified before the flight, and results from the assembly and verification campaign are presented15
as well. SPGCams share the design, although some parametric features differentiate the visible ones (for TuMag) and the IR ones (for SCIP). Even if they were specifically developed for the17
SUNRISE III mission, the robust and careful design make them suitable for different applications in18
other astronomical instruments.