Quote:
Originally Posted by telecasterguru
Doug,
Really good job but 8 hours of capture is a lot of work.
Frank
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Cheers Mr Guru - keeps me off the streets!
Quote:
Originally Posted by gregbradley
Hi Doug,
Very nice capture.
Any reason you are using ICNR instead of dark subtraction?
When I used a DLSR I made a dark library for different ISOs and times and then made a master dark. With Images Plus and CCDstack you can use adaptive darks and the software adjusts for different levels of noise from different temps and does a very good job at it.
So it would save a lot of time and you could use that extra time for more exposures.
Greg.
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ICNR by force of habit and not possessing a darks library. But your reasoning obviously makes sense. All my images are becoming sagas, so I'm going to look into the darks library thing - I'll check out the adaptive dark feature in IP . Thanks for the info.
Quote:
Originally Posted by Bassnut
CCD stack was a nightmare with DSLR subs, I was forced to go back to IP for DSLR pics, but the latest version (just out) seems to handle large pics/stacks much better, and then yes, the adaptive dark feature works very well.
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Cheers Fred
Quote:
Originally Posted by bmitchell82
Nice work there doug, as a fellow 40d user i know that Ha can be a royal pain, and with a little apereature it can be very hard.!
what was the ambient temperature that you where shooting in?
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Not too sure mate - reckon around 8 degrees maybe
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Ha isn't the easiest on a DSLR that's for sure - checking focus between each shot in the absence of a bright star in the FOV is going to be a nachtmare!!!!
I developed a little routine to help with the "user" program of Synscan which makes life a tad easier (just a tad mind!!) Find a bright star without Ha filter - set it as user object 1. GoTo and Frame the object you want to image - set it as user object 2. Go back to obj 1 (bright star), insert Ha filter into imaging train, focus, slew back to obj 2 - start imaging!!!! Simple Eh!?
The bugger is that if you use this to method to focus in-between shots, you stuff around with the guiding a bit too much.
Doug