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Originally Posted by Joshua Bunn
Ohh WOW!! That just brought a huge grin to my face and made me laugh... simply breathtaking... Thankyou.
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thanks Joshua - glad you enjoyed it.
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Originally Posted by andyc
That's pretty special. I'd casually wondered if gravitational-lensed galaxy arcs were possible for amateur imaging, you've shown that beautifully! And the whole image is a treat to explore.
Two quick questions:
There's a broad faint bluish streak on the centre right of the image - any thoughts on what it is (IFN, something else?)
What exposures did you use for imaging?
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Thanks Andy. the streak is aligned with the spider diffraction patterns, so it might be diffraction from a bright out-of-field star. It could also be light leakage (camera?) since my imaging environment is fairly bright due to local streetlights. Still to tie down exactly what it is.
Exposure? - will get back to you. there have been a lot of versions of this with different sub selection criteria and I did not keep a tally of how many subs were used in the final version. However, all subs were 5 minutes and the usable data was selected from ~30 hours in total. I think that it is reasonably deep, with galaxies (identified elsewhere) of ~m24 being easily identified and the 3sigma is probably somewhere around m25.
regards Ray