M42 (another) reprocess BUT this time with Pixinsight!

[blinky]

Here is a 100% crop from around the running man - it's a single sub and all I have done is to debayer it. I think the star shapes are a combination of collimation and possibly a little trailing/wind.

[blinky]

And here I stretched the same single sub but this is 100% crop from the other side and the stars dont look quite as good -tilt somewhere?

[Catanonia]

check this fix for the mirror slop

http://stargazerslounge.com/imaging-deep-sky/169276-orion-ts-supernewt-reprocessed-much-more-care.html

[Tim]

Craig, to get away from the effects of coma, choose stars near the central 1/4 of the fov to gauge roundness.

If there is a tilt of the camera to the focal plane, the stars on one side of the image will be different to those on the other side, and probably out of focus a little too at F4.

Be interesting to see how the stars at the start of the session compare to those at the end.

BTW, when you start analysing something as easily fixed as star shapes, you KNOW the image is good

[Quatermass]

Pukka job looks great

Sent from my GT-S5670 using Tapatalk

[Coolhandjo]

Thats a good image and processing great. Well done.