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Deep Sky Stacker Help!

Robfal

By Robfal
in Imaging - Discussion

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Robfal

Robfal

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Hope someone can help me with this.  Whenever I stack something (tried lots of different  images from different sessions) in DSS I get black bands across the final image (possible in line with stars) see below.  Any idea why this might be happening?

I've also stacked the same images in ASTAP and these lines aren't there.  Doesn't matter if I use calibration frames or not, this still appears

I've included un-streteched images (TIFFS) and also stretched versions (over stretched!) which show the error better.  No post processing is done on any yet

 

As an aside,  If not DSS what would you recommend as stacking software (free!)  

 

Rob

M64_DSS_Stretch.png

M64_ASTAP_Stretch.png

M64_DSS.TIF M64_ASTAP.tif

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