|
Hmm, no, you're right. I'd expect to see about 30% longer exposures for B, not 255%.
I've now realised that the Astronomik LRGB filters I bought are type 2, not 2c. I can't find any data on the type 2, so I'm not sure what their bandpass might be. Strange though, I wouldn't expect it to be that much different.
|