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Old 12-10-2016, 06:30 AM
oernulfs (Ørnulf)
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oernulfs is offline
 
Join Date: Nov 2012
Location: Norway
Posts: 142
NGC 891 from Norway

47 x 300s captured with an Atik 383l+ color cam through a Celestron 9,25 with f6,3 reducer and guided through a WO 90mm with a Loadstar camera and 2,5x powermate. Everything on a eq 8 mount. All processing in Pixinsight. I must learn how to remove the stars from the image...

Larger version of the image here: http://www.astrobin.com/268002/

Two problems:

1) the stars are marching between exposures and 600s gives elongated stars even after drift alignment. Probably flex in my guide setup. I will buy an oag!!

2) I use Artemis software for capturing, and when doing flats it turned out that the software produced a fileformat called 3S!? Thus I have not calibrated with flats (only darks and bias). I must look into this again...
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Last edited by oernulfs; 12-10-2016 at 07:41 PM.
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