Affiliation
American Association of Variable Star Observers (AAVSO)
Wed, 04/22/2020 - 22:02
Telescope “APC->Celestron CGEM 5.28 Filter R” images are saturated at 20s exposure for single images. I suggest 15 second integrations or perhaps even 10s.
BV and I are not saturated. It might be good to try the following integrations: B at 45s, V at 20s, R at 15 sec I at 15s.
Reason: Unstacked images: B SNR is ca 612, V SNR is ca 675, unstacked R are saturated with SNR at 740-756, I SNR is ca 685. So, there is plenty of SNR to play with if we use shorter integration times.
The BL Tel data are BBBVVVRRRIII for each night. So I am stacking and transforming. I will report B and V data only until I get some feedback.
Glad to share images for evaluation and alternate opinions.
Ed