interesting comparison

[chuckywiz (Ben)]

whilst im not to flash on the processing side of things.. i took a couple of quick exposures of ETA tonite inbetween clouds.

these 2 photos are of equal exposure times 20 minutes. the first is from the other week taken with 5 and 3 min subs and no darks. the 2nd is 2 x 10 min exposures with 2 x 10 min darks. stacked and well as processed as i get. what i noticed is the 2 x 10 min exposures are well and truly pinkified. and i cant seem to get it back to anything like the 1st pic.

which one do you guys think is a better representation of the nebula. im more towards the 1st pic the 5 min subs.

im also using a light polution filter.. Nikon d3200 dlsr guided.

Ben

[chuckywiz (Ben)]

Hmm a bit more playing around i was able to reduce the pink a bit... now they look similar for same total exposure time.

Ben

[jsmoraes (Jorge)]

It is difficult to do this comparison. There are many factors involved: seeing, temperature of sensor, graphic process, and others.

Nevertheless, as photo, I liked more the first, where I can see the nebula more natural, without any strong saturation.

[glend (Glen)]

It is an area which is naturely red, especialy if you are ueing a sensor that can pick up Ha. I don't know anything about your camera but to me it looks over-exposed for the brightness of that object. - a common problem whn chasing neb cloud detail. I'd be suggesting using a neb filter instead of a LP filter. What ISO was used. I fill pm you a link to my Astrobin photo of the same area.

[Slawomir (Suavi)]

Hi Ben,

Not a bad attempt at this nebula, well done.

I like the first version with shorter subs more - it appears that 10-minute exposures are too long for this object with your camera. I would try adding more subs to the first version too.

[chuckywiz (Ben)]

Thanks, Next decent night i get i will be out in force taking a ton of data.. weather here lately has been very ordinary. This weekend looks like a cracker and ill be down south to boot.