RT Journal Article
T1 The Calar Alto CAFOS direct imaging first data release
A1 Cortés Contreras, Miriam
A1 Solano, E
A1 Alonso-Hernández, J
A1 Cardiel López, Nicolás
A1 Cruz, P
A1 Rodrigo, C
AB We present the first release of the Calar Alto CAFOS direct imaging data, a project led by the Spanish Virtual Observatory with the goal of enhancing the use of the Calar Alto archive by the astrophysics community. Data Release 1 contains 23 903 reduced and astrometrically calibrated images taken from 2008 March to 2019 July with a median of the mean uncertainties in the astrometric calibration of 0.04 arcsec. The catalogue associated to 6132 images in the Sloan griz filters provides accurate astrometry and PSF calibrated photometry for 139 337 point-like detections corresponding to 21 985 different sources extracted from a selection of 2338 good-quality images. The mean internal astrometric and photometric accuracies are 0.05 arcsec and 0.04 mag, respectively. In this work we describe the approach followed to process and calibrate the images, and the construction of the associated catalogue, together with the validation quality tests carried out. Finally, we present three cases to prove the science capabilities of the catalogue: discovery and identification of asteroids, identification of potential transients, and identification of cool and ultracool dwarfs.
PB Oxford University Press
SN 0035-8711
YR 2023
FD 2023-03-14
LK https://hdl.handle.net/20.500.14352/134693
UL https://hdl.handle.net/20.500.14352/134693
LA eng
NO M Cortés-Contreras, E Solano, J Alonso-Hernández, N Cardiel, P Cruz, C Rodrigo, The Calar Alto CAFOS direct imaging first data release, Monthly Notices of the Royal Astronomical Society, Volume 521, Issue 2, May 2023, Pages 3127–3149, https://doi.org/10.1093/mnras/stad744
NO © 2023 The Author(s)
NO Agencia Estatal de Investigación (España)
NO Consejo Superior de Investigaciones Cientificas (España)
NO European Commission
NO European Union
NO Comunidad de Madrid
NO NASA
NO Robert Martin Ayers Sciences Fund
NO National Science Foundation
DS Docta Complutense
RD 29 abr 2026