I'm very embarrassed about this - after telling Jim and Fay to be careful not to burn out the centre of M13, guesss what I went and did? I'll have to take some more subs at home, some time, to repair the damage.
Anyway here it is, from Saturday night. I started imaging at 1am after spending the evening showing Joe Public the delights of the sky.
Details: 18 x 5minutes. Modified Canon 350D on Celestron C11 with F6.3 focal reducer. No filters.
(http://gallery.orpington-astronomy.org.uk/albums/userpics/10046/normal_woodm13half.jpg)
Larger version is here: http://gallery.orpington-astronomy.org.uk/albums/userpics/10046/woodm13half.jpg
As usual, a great image, fantastic M13, Mark. It is cropped?
Hi Mark, It's interesting how different it looks to mine. with a larger aperture and longer exposure are you picking up fainter stars so that the burnt out core is actually all you see in mine? according to the book M13 is 145 lyrs across so I wonder at what point they measure that. anyway it's a lovely pic.
Looks good Mark - I am liking the star colours in this image. You also have the 'propellor' bit showing that I identified in my last attempt at m13...
Nice one - John
Lovely image, If you think that's a burnt out core wait 'til I post mine! The resolution is excellent, as are the colours. What did you process it in?
Really nice Mark.
That's really great image Mark, the colours look really good. Was this at F/6.3 or f/10 ?
Thanks for your comments.
Jim - It should be possible to match your stars against mine to see which area your image covers
Fay - I have binned this to half size and then cropped off the edges where the bad coma is
Dunc - I do all my processing in IRIS. I haven't even applied a deconvolution to this
Robert - It was F6.3
Mike - Between 1am and 3am Sunday 24 May 2009
Mark