Details on the images and data processing is available at Cortés-Contreras et al. 2023.
This is part of the SVO Calar Alto CAFOS Direct Imaging First Data Release archive.
If you use this service in your research, please include the following acknowledgement in any resulting publications:
"Based on data from the SVO archive of vanishing objects in POSS I red images . The archive has been developed in the framework of the Spanish Virtual Observatory (https://svo.cab.inta-csic.es) project funded by MCIN/AEI/10.13039/501100011033/ through grant PID2020-112949GB-I00. The system is maintained by the Data Archive Unit of the CAB (CSIC -INTA)".