[gregbradley]

Originally Posted by Rod771

That's very nice Greg

Very colourful.

Thanks Rod.

Originally Posted by Peter Ward

Post processing is very much in the eye of the beholder....

In this case I'm seeing a very high-key image with highlights effectively burnt out.... which is a shame as I suspect the underlying data is all there (and then some ).

A good M20 for sure... but sorry...not one of your best. I think it needs some top end gamma correction.

Fair enough. I've done a repro using gamma and offset correction plus shadows/highlights tool and its toned down the highlights.

Originally Posted by IanP

Peter, I think gamma correction will also affect this gorgeous blue nebulosity. I'd go for HDRM-transformation in PixInsight with only the "to lightness" box checked. It will look absolutely stunning.

Thanks Ian. I looked for that tool and I couldn't find one called that. I looked some more and I see the HDR Wavelets transformation tool has a lightness checkbox. I tried that but the correction looked a bit savage and damaged the image. No doubt there are ways to finesse this tool. I am fairly new to PI but can use some of it. I have some tutorials paid for I need to sit down and watch and go through it some more. There are some useful tools in there for sure.

Originally Posted by DavidTrap

Sorry Greg - have to agree with Peter & Ian.

DT

Fair enough. I've done a repro as per above and I've toned down the highlights. I think what happened is in the effort to bring up the extensive faint blue nebulosity its brought up the bright areas too much with it.

Originally Posted by Paul Haese

Good colour Greg. Star shapes look good too and the MMOAG with the ST-i certain has had a positive impact. Looks like the flats are working in this image.

Yes flats work well on bright objects just the faint galaxies I have trouble with.

Originally Posted by alpal

Hi Greg,
It looks like it was good data.
Did you stretch it in 32 bit FITS files from stacks before processing in 16 bit?

(as per my humble advice here:
http://www.iceinspace.com.au/forum/s...d.php?t=113110
)

cheers
Allan

Yes thanks for that Allan. I am pretty sure. I'd have to check the workflow but the initial processing I always do is using CCDStack and I think default is 32bits but perhaps its 16. It may be something I need to check in CCDstack to default to 32.

Repro posted to the same links.

Thanks for the feedback.

Greg.