Optimal Sub length calcs
Posted: Sat Mar 20, 2021 11:44 pm
Hi All,
I've just watched Dr Glover's presentation on Deep Sky Astrophotography with CMOS cameras, it was just amazing and inspiring, and I loved the scientific approach despite the fact I was not the best-in-class physics student, so there might be something I missed in the plethora of new information:
When the optimal sub length is detemined, doesn't the brightness of the object should come into calculations? I mean, the Orion nebula is like much, much brighter than the Dolphin's head for example. Or like the photons hitting the sensors is like kind of a constant number, unrelated to the brightness of the DSO? Quite confused here.
For now I only use a Sony MILC, did a few pics, nothing fancy. But I couldn't seem to get the same amount of details out of let's say the Triangulum galaxy and the Andromeda with the same exposure length (okay my post processing skils definitely need improvement, but still).
Or is there something I completely misunderstood?
Thanks for the help in advance, stay safe everyone!
I've just watched Dr Glover's presentation on Deep Sky Astrophotography with CMOS cameras, it was just amazing and inspiring, and I loved the scientific approach despite the fact I was not the best-in-class physics student, so there might be something I missed in the plethora of new information:
When the optimal sub length is detemined, doesn't the brightness of the object should come into calculations? I mean, the Orion nebula is like much, much brighter than the Dolphin's head for example. Or like the photons hitting the sensors is like kind of a constant number, unrelated to the brightness of the DSO? Quite confused here.
For now I only use a Sony MILC, did a few pics, nothing fancy. But I couldn't seem to get the same amount of details out of let's say the Triangulum galaxy and the Andromeda with the same exposure length (okay my post processing skils definitely need improvement, but still).
Or is there something I completely misunderstood?
Thanks for the help in advance, stay safe everyone!