WO FLT132 with FFIV reducer. QSI683 with Astrodon filters. 51 hours exposure total
Beautiful image Buzz. Which bandwidth filters?
Ha 5 nm, O3/S2 3 nm.
Just wow !!! - and 51 hours. I can’t stay focused on one target that long (mentally).
I think mine are all 3nm.
51 hours! I don’t think I have that many hours of clear skies in a year!
Here’s my latest - Soul’s neighbor. Heart of the heart. I think I have under 20 hours.
I like the muddy one, but I over pushed a version too. (some people prefer).
Larger muddy vers. (a bit larger) It probably should be finalized somewhere between the two versions. 6" refractor, astrodon 3nm, 1600mmc, mach1. (OAG)
Nice subtle colouring. I did the same subject last month with my RCT for about 40 hours. I have to go that long to overcome light pollution.
I don’t understand what you mean by this statement. Light pollution is going to be a given percentage of your target brightness no mater how long you expose. I can see doing a longer exposure to try to get near saturation on the brightest parts of the image and to improve dynamic range but I don’t see how that helps reduce sky glow.
Along with the light pollution is shot noise. I have to stretch the faint signals considerably and more exposure means I can do that without heavy handed noise reduction. I had full moon during this period.
Understood, so you are not “overcoming light pollution” with longer exposures.
I am overcoming the shot noise associated with the light pollution, so, yes, I am overcoming light pollution with more exposure.
Not to quibble, but the light pollution is a given percentage of the target brightness and increasing the exposure does not change that. Light pollution is a common problem and I don’t want people to think that the light pollution itself is being reduced by a longer exposure. No disagreement that a longer exposure is good for lower noise and better image depth.
And dynamic range