Galaxy NGC 4236


#1

NGC 4236 from last spring. It is a bit faint but fairly large. Image was cropped quite a bit from original size to get rid of some obnoxious bright stars. A larger scope would have been ideal but the TOA 130 is the longest focal length I have at this time.

STT 8300
TOA 130
Paramount ME
Acquired SGP/PhD
Processed Pixinsight
26.75 hours LRGB

NGC 4236


#2

Very nice. What were the sub exposures and total exposure times for each filter? Binned 1x1 or 2x2? Was flattener or reducer used?

Thanks,
Peter


#3

RGB were 15 minute and L was 10 minute. Binned 1x1 (I used to bin 2X many years ago but never bin anything 2X anymore). Yes, the there is a Tak flattener in the imaging train, no reducer.

I would like to have gone 15 with the L but those (now cropped) bright stars were a bit much.


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