| The Catalina Surveys|
Data Release 1 (CSDR1)
As part of our commitment to open data. Photometry taken during the past five months is available for public use.
As part of our commitment to open data. Photometry taken during the past four months is available for public use.
In essence this means that the Master catalog magnitudes are now calibrate to V. The median offset for between the master catalog stars observed in the individual frames is now subtracted. The reduction in scatter is typically 0.02-0.03 magnitudes.
At mag 14 and above this correction reduces the photometric scatter to 0.02 magnitudes, at mag 17 and fainter this has little effect (apart from in fields with significant systematic effects).