Common Issues - What's wrong with my Image?

This is a great place to locate solutions to common problems.

What are the bright or dark vertical lines in my image?
What you are seeing here is a column defect - they can be eliminated by proper calibration or dithering. Column Defects are CCD camera pixels that usually ...
Fri, 26 Apr, 2019 at 10:57 AM
Why are the stars in my image bleeding or blooming?
This is normal for an NABG (non-anti-blooming gate = it blooms or overshoots when overexposed) camera, as it does not have anti-blooming technology. A scie...
Fri, 26 Apr, 2019 at 10:58 AM
Why is the telescope I am trying to use showing "No Filters"?
Most likely the telescope CCD is not connected due to maintenance or its a problem with its connection to the control software on the telescope PC.  Wait f...
Fri, 31 Aug, 2018 at 2:22 PM
What are the effects of the bright Moon on my choice of target?
Another big question. The Moon has always been the bane of deep sky observers. But you are using an iTtelescope with an advanced CCD camera and a variety of...
Fri, 31 Aug, 2018 at 2:36 PM
Why are some of my star images showing as big lines or spikes?
A CCD camera records images by converting photons of light into electrons. The electrons are temporarily stored in individual picture elements (pixels) on a...
Fri, 31 Aug, 2018 at 2:43 PM