[Stephane]

Originally Posted by Kuz

Nice clean image Stephan. Well done

Thanks Kuz, glad you like it!

Originally Posted by Startrek

Stephane,

Really nice image of the Rosette
Well done !!
Nothing stopping you now , full steam ahead !!!

The odd shaped stars in the areas towards the corners of the image look very much like coma to me as they are flared to the corners. Had the same issue with my 8” f5 newt with a Baader MCCP Mk3. After 2 weeks of experimenting, a 1mm spacer fixed my issue with the sensor now 56mm from the coma corrector instead of 55mm ( all scopes are different) If it was tilt or reverse flop in the camera you would most probably see the stars odd shaped in the same direction across the field.
Anyway, great work
Clear Skies
Martin

Thanks Martin! Yes I will need to buy a couple of 1mm spacers and experiment a little. Do you know where I can order some? Can’t seem to find anything under 3mm. Really not an issue at this stage, but would be nice to fix some day. I also need to get a Bahtinov mask rather than “guess” perfect focus.

Clear skies,
Stéphane

Originally Posted by Mick

Nice

Thanks Mick

Originally Posted by Drac0

Very nice indeed. I only got an hour on my first attempt, not enough really. Waiting on my 0.8 flattener /reducer before trying again. It will probably be here before I get another good clear night...

Funny you say that Mark about the .8 reducer. With artifact ms from stacking cropped out, I just can’t squeeze the whole thing in. One day, I might do a mosaic of 2 frames. That will be in the distant future though as I have a whole bunch of other DSOs to capture first

Originally Posted by Anth10

Stephane,
Really like this - especially the central area very nice indeed.
Well done
A

Thanks Anthony. The darker center with those “swirls” make the Rosette such an interesting target. I’m glad this one turned out better than I hoped.

Clear skies,
Stéphane