Thanks again to each and everyone for your engouraging comments!
Now I have to figure out where to point the scope next, but so far it's been cloudy here.
Quote:
Originally Posted by gregbradley
This image should spark a thread about signal to noise ratio and how much gain extra exposure time will provide.
As I understand it the signal to noise ratio improves to the square root of the increased exposure time. So it must take a LOT more hours to get that last little bit.
Did you find that Rolf with this image? Or did you wait until you had the full 120 hours to process it. I wonder what it looked like at say 40 hours for example.
Greg.
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Yes Greg absolutely, I did a couple of stacks along the way so I could see the difference. From the last 50-60 hours I gained about 1 magnitude, from ~24.5 to ~25.5
But this also markedly descreased the background noise and made processing far easier. I couldn't have brought out the excruciatingly faint outer details to this degree with say half the integration time, so it was worth it.
Quote:
Originally Posted by MrB
Was just looking at the images again and to my untrained eye, there looks to have been some changes out there?
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Thanks for spotting this, I think I know what happened. In the ESO field there is a very very faint star right at the tip of the bend in that filament, which seems to have been poorly handled during my processing so it now looks sort of like an extension of the filament...
I hope to get around to fixing that soon
Quote:
Originally Posted by Bassnut
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Thank you Fred, I'm actually in the process of building a larger 12.5" version so I can get to go
really deep
