I had hoped to add more data to this, but the clouds tonight put an end to that adventure. Maybe when the skies are clear I can add more data to this one.
This is 2 hours of data (120 x 60 second subs @ ISO400), but taken at a low elevation, so plenty of light pollution to look through. If I didn't have to go to work, I would have definitely taken a lot more images as the whale swam higher into the night sky.
Processed in Siril (lights, darks, flats and bias frames; background removal; 2 asinh stretches; no colour calibration or histogram stretch; green noise removal) and Affinity Photo.
Interestingly enough, NOT doing a histogram stretch in Siril gave better results - far less murky background noise, and an easier to work with galactic core.
Next time, I think I'll try for 2 minute subs at ISO 200.
Cheers,
V
Boring bit:
120 subs of 60 seconds, ISO 400
HEQ5-Pro + SW ES72ED@420mm + Nikon D7100 + Guiding
Hi Steve.
I would go the other way with ISO. More ISO less exp. I haven't tried DSLR yet but equating it to gain I'd go way more than double (800-1600+) and shorten the exp to compensate on your histogram. Even if I'm mistaken you (and I) will learn something
Then I'll know one way or t'other what works.
