[bluesilver (Peter)]

Hi, I have taken this with a Skywatcher Esprit 150 with a .77 reducer
Camera is a asi2600mc and filter is a OPTOLONG L-PRO Filter

I did a run of 90 x 20 second exposures for a test
All stacked with Darks, Flats and Dark flats in Deep Sky Stacker
Processed with StarTools.

I also tried the same target with 2 minute exposers and got the same odd star glare.

Tried another target completely different, the Dolphin Nebular SH2-308 and got the same effect on a different star.

I am just trying to find out if this is normal or is it something that i have to look into more deeply?
I removed the dew shield and put some flocking material inside to see if that had any effect, but no change.

I was planning to try the same target with the same 20 second exposures but without the filter and no reducer to see if there is any change, but clouds are now forecast here for the next week at least.

I had an image of the Orion Nebular a few months back and no odd rings around any stars there.

Any advice would be appreciated.
Cheers,
Peter.