Finally processed it! This time with no Perseid.
Data taken over 3 nights: 6, 9 & 10 August
55 x 5 min exposures
Usual setup: H-alpha modified Canon EOS 350D on Banana Scope (Tak Epsilon 180ED at F2.8 ). IR/UV filter only.
(http://gallery.orpington-astronomy.org.uk/albums/userpics/10046/normal_m31_10082010.jpg)
Large version here (full size but slightly cropped):
http://gallery.orpington-astronomy.org.uk/albums/userpics/10046/m31_10082010.jpg
I would need to go to a very dark site in order to improve upon this. However, I might shoot some H-alpha data for it at some stage ...
Mark
Very nice, if a little blue, just a little.
You need a Takahashi 125mm F2.8 to fit it on the chip :-) M31 is massive!
Chris
Yes - M31 is huge - I didn't quite realise how big it is.
You're right - it's far too blue. Try this one instead:
(http://gallery.orpington-astronomy.org.uk/albums/userpics/10046/normal_m31_10082010v2.jpg)
Large version: http://gallery.orpington-astronomy.org.uk/albums/userpics/10046/m31_10082010v2.jpg
Mark
looking good,
Just counting down the days untill i restart.
Better just need the Ha now :-)
A really impressive result that - there's really no stopping you now is there ;-)
Colour wise I'd suggest you do a G2V calibration to get it right though I think somewhere between the two you posted would be be my personal choice.
I did some tests on the size of this last year and it's a real squeeze with 400mm fl and an APS chip. I think 300mm is probably ideal but my attempt will probably be at 200mm.
Robert
Mark that is really great. I want to do this again in France, as I have only done an 8x300!
G2V thats ok if you can spot one!!!
Amazing detail on the big version.
What is the glow top right? It looks like nebulosity but I can't find anything around there in planetaria.
Quote from: Duncan
What is the glow top right? It looks like nebulosity but I can't find anything around there in planetaria.
It's from a very bright bluish star (you can see it it the image of Andromeda and the Perseid). I cropped the image to cut the star from the final picture but some of the bluish light remains. Leaving such a bright star visible at the edge of the image was just too distracting.
Mark
Nu And/35 And B2V. Thanks Mark.
Duncan,
You've changed your name and your avatar!
Mark
It's 'cos I've discovered my true identity :-) and also to celebrate my impending notoriety as the February pin-up of the next calendar. If the editorial staff approve of course. Your pic scaled down looks excellent.
Quote from: The Thing on Aug 27, 2010, 18:12:18
It's 'cos I've discovered my true identity :-) and also to celebrate my impending notoriety as the February pin-up of the next calendar. If the editorial staff approve of course. Your pic scaled down looks excellent.
Oh dear. You've let everyone know a potential Calendar page. We'll just have to cancel that one and choose something else ;)
I wouldn't want the paparazzi attention anyway. 8)