Thanks guys for the comments.
Quote:
Originally Posted by Peter Ward
Very tidy effort Paul.
For what it's worth, the arcs/flaring from the lower right is almost certainly a stray reflection from the the telescope's baffle or focuser. The radius looks way too large to have bounced from the camera/filters.
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I'll take a look but all my adapters are painted matt black, the focuser is an Atlas on that scope. It did not appear with the STXL when I was using it on that scope. So I doubt that this is further inside the scope. It might be inside the corrector though. More teething to be resolved.
Quote:
Originally Posted by gregbradley
Very nice Paul and I totally understand how its been a bad period for imaging. Nice to get a new image.
Great colour. Stars though look squarish and a bit flared. Watch the 695 sensor. Full well is not its strong point. I found using shorter subexposures was a good strategy to get tighter stars. Like 5 minutes instead of 10.
Flare would be from the primary mirror baffle tube. It would need a small baffle attached to the outside of that primary baffle tube to widen it slightly.
Greg.
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Thanks for your comments Greg. This image is only produced with 5 minute subs on the LRGB and 10 minutes on the Ha. Ever since I have been using these fast scopes I have been doing short subs. I can't see any square stars myself. Whilst not perfectly round, I don't believe they look square. There are some odd shapes being produced by scope however. Perhaps still an element of tilt or astigmatism.
The primary has a mask over it. That cannot therefore be the cause of a flare. Further this is a Newtonian, not a catadioptric telescope. It might be from the secondary though with some stray light contacting the edge, though last time I had it out I did use a felt tip marker to paint that edge and remove any possible flares that might occur.