Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Rocket Pooch on Apr 24, 2005, 01:33:00

Title: M13 from Thursday this week
Post by: Rocket Pooch on Apr 24, 2005, 01:33:00
Had a go at M13 on Thursday.

(http://www.jumpers4goalposts.org.uk/images/Astronomy/Messier/M13-20050421sec.jpg)

Any better

(http://www.jumpers4goalposts.org.uk/images/Astronomy/Messier/M13-5-20050421.jpg)


[ This Message was edited by: csuddell on 2005-04-25 21:30 ]
Title: M13 from Thursday this week
Post by: JohnP on Apr 24, 2005, 03:04:00
Hi Chris,

Nice but I think I prefer the M3 from a week or so ago - it just looks a little sharper (maybe seeing not as good)- also looks like there is light pollution (or possibly moon) at top...

Cheers,  John
Title: M13 from Thursday this week
Post by: Rocket Pooch on Apr 25, 2005, 17:37:00
ep could have done with using the Ha I think, nearly full moon nd high cloud we're not good.
Title: M13 from Thursday this week
Post by: Rocket Pooch on Apr 26, 2005, 06:01:00
I put another one above.
Title: M13 from Thursday this week
Post by: Rick on Apr 26, 2005, 19:19:00
Wow! Much sharper stars.
Title: M13 from Thursday this week
Post by: JohnP on Apr 27, 2005, 01:17:00
Yep! - Looks a lot better - How did you do it? John
Title: M13 from Thursday this week
Post by: Rocket Pooch on Apr 27, 2005, 04:45:00
Well you see I think the worse thing you can do is rush and image :sad:

I just went back to the FITS and selectively stacked a bunch of images rather than the, oh I'm tired and I'll do a bunch automatically.

Just did a single set of 45x5 second images, dropped 5 fuzzy ones and then I removed some low level artifacts using AIP gamma scaling, and bingo nice sharp stars, would be even better if the SAC8 did not do the slight shadows on the bright ones.

No mask or anything else applied, just cropped the image to look square, cool eh!

Now its your turn with your nice new telescope!

BTW this was done with the LX90 at F3.3 hence the quick image times.