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Sunflower from 2nd May...

Started by RobertM, May 10, 2008, 11:25:33

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RobertM

This didn't turn out at all well compared with M51 on the same night but I thought I'd post it anyway.   Before people ask, the details are in the Gallery.

http://gallery.orpington-astronomy.org.uk/displayimage-450.html

I didn't realise what a difficult target it was till I took the first sub.

Ian

I'd be happy with that.

Bit of a trim and a flat frame if you've got one would help too :)

JohnP

Looks bloody good to me  - a great shot on a very difficult target - John

MarkS


Very nice Robert - what an interesting looking galaxy!

RobertM

JP, thanks for the comment.

Ian, it was calibrated with the average of 30 flats, I think the gradient is courtesy of the nearby Street lamps.

Ian

ah, the joys of suburban imaging :(

I think there's a technique regarding synthetic flats to get rid of that sort of gradient, but as John says, fantastic image :D

Rocket Pooch


Fay

Robert, what can I say, a smashing image!!!
It is healthier to be mutton dressed as lamb, than mutton dressed as mutton!

RobertM

Thanks everyone, should have a few more to post soon.

Fay, I did say I though that binning wasn't necessary but I can see sense to it for capturing areas with low surface brightness and detail as 2x2 gives four times the sensitivity.  I'm trying a combination of binned 2x2 and 1x1 to see whether there's any benefit with my setup.