[Shiraz (Ray)]

Originally Posted by RickS

Wonderfully sharp, Ray!

thanks Rick.

Originally Posted by LewisM

WOW! Simply wow

thank you very much Lewis.

Originally Posted by multiweb

That's amazing Ray. Best I've seen to date.
Those stars are amazingly round. Care to elaborate a bit on the processing you did. Also did you use the newt? Is that cropped? AO used? What mount did you use. EQ8? Length of subs?

Very generous comment thanks Marc.
70 subs at 5 minutes taken over few months whenever Ha seeing was good and I wasn't doing something else. EQ6 with a 250f4 Newtonian, RCC1 and H694 camera - 6nm Ha.
No AO, just a converted finderscope and QHY5L2 as the guider. Processing was drizzle 2x followed by deconvolution on linear data with (PI derived) synthetic star PSF. then stretching and a little bit of local wavelet sharpening and noise reduction. Stars were in pretty good shape, but the combination of drizzle and deconvolution produced minor artefacts at the edges of the brightest ones, so they were tidied up in StarTools - hence the perfect roundness. Then image was downsized 0.75 and cropped from 13.5mp to 7.1mp for composition and to remove regions where minor setup changes had led to poor overlap.

Originally Posted by SimmoW

Yep, mega-crisp!!

thanks Simon

regards Ray