ZWO ASI 071 edge band

menardre

I have a ZWO ASI 071. I have been taking images using my Celestron CPC1100 and .7 focal reducer. I have noticed that there is a small blank band at the far right edge of the images. It is only a few percent of the width, but I have to it crop out. I am wondering if this is a a tilt problem or is it something else?

Speaking of tilt.... do you have a recommended process for adjusting tilt... or is it entirely trial and error.

Roger

Sam@ZWO

can you post some images of issue you have?

menardre

The attached image is NGC 2392. I attach my ZWO ASI 071 to CPC1100 using .7 focal reducer. I took 35 exposures, 2 minutes each with darks and flats. I then used Images Plus to combine the images and do an initial stretch. You can see a loss of data on the far right.

Roger

menardre

Image

menardre

NGC 2392 stretched and compressed.jpgI had trouble uploading the image. I think the file size was too large so I compressed the JPG.

Roger

Sam@ZWO

can you find this problem in raw image?

looks like because of movement between each frame when do stacking?

menardre

I think you are correct. I tried processing single images without seeing the band. The band only seemed to appear when I combine several images

Roger