NGC4565

[Rudi]

Needle Galaxy, NGC4565, my favorite edge on galaxy.
Captured over two nights this weekend.

29 x 480 sec L
28 x 480 sec R
29 x 480 sec G
27 x 480 sec B
Total 15 hours and 4 minutes
+ darks/flats/flatdarks

ASI 1600 MM Pro @gain=139 / T=-20°C
Sky-Watcher Quattro 8" f/3.9 + Sky-Watcher Aplanatic Corrector
Sky-Watcher NEQ6 Pro
Pre and post processing sololy with AstroArt 7

Click the image to see it in full resolution.

[Dunmunro]

Two thumbs up!

[Gilbert]

Superbe cliché !!!
Comment revenir sur une image au pixel près et recommencer des poses photos ?
Bien cordialement

[Dunmunro]

Superbe cliché !!!
Comment revenir sur une image au pixel près et recommencer des poses photos ?
Bien cordialement

Speaking for myself, I use the platesolve assisted centring:

Telescope control -> Center -> Goto (plate solving).

I find that it will centre my CEM60 or CEM120 to within ~15 arc seconds on successive nights, which is quite sufficient for the Preprocessing Image Aligning and Stacking to work.

[Rudi]

Superbe cliché !!!
Comment revenir sur une image au pixel près et recommencer des poses photos ?
Bien cordialement

I used Google translate, my French is almost non existent:

Superb shot !!!
How to go back to an image to the nearest pixel and start photo poses again?
Best regards

I do something similar to Dunmunro:

1) In Cartes du Ciel, slew to target
2) Take a short image (1-2 sec) in AstroArt
3) Platesolve in AstroArt
4) Sync telescope in AstroArt
5) Have a look in Cartes du Ciel, if target is not centered good enough, go to 1), otherwise done...

With my permanent mounted NEQ6 Pro, which is well polaraligned (within a fraction of an arc minute), it usually just takes two iterations, then my target is in dead center of the FOV.

[Gilbert]

Bonjour,
Merci beaucoup pour vos réponses. Je vais tester la procédure.
Bon ciel !