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  #21  
Old 16-10-2015, 02:28 PM
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strongmanmike (Michael)
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I'm totally with Ray here Al, some good basics have been achieved in this image and via a great display of perseverance on your part Hey, one day you too may be able to afford a $70K OTA but in the meantime, keep plugging away mate, look forward to seeing how you progress with your lill beasty

Mike
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  #22  
Old 16-10-2015, 11:06 PM
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alpal
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Quote:
Originally Posted by gregbradley View Post
Looking very good Allan.

2 minutes does seem pretty short. You have to get above the noise floor of the camera and 2 minutes is extremely short and won't do that.

Also total exposure time needs to be higher and things will improve as the hours build up.

But the main points are great, sharpness, round stars.

Adding some Ha will help as well.

Greg.

Thanks Greg,
I hope to do some magical things with this setup.
A 10" F4 is noticeably faster than an 8" f6.
This scope should be over 3 times faster than the 8" f6 I used before.
That's why I thought that 2 minute subframes would be equal to about 6 minutes with the old Newt.
I was hoping to get good signal to noise benefits by stacking rather than taking long exposures.
It seems though that my next imaging session should use longer exposures.

I have had excellent results with 20 minute exposures using Ha
binned at 2x2 with the old Newt.
Just one frame of 20 minute Ha brought this picture to life & made it pop:
https://www.flickr.com/photos/247194...in/photostream


cheers
Allan
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  #23  
Old 16-10-2015, 11:07 PM
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alpal
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Quote:
Originally Posted by rustigsmed View Post
great to see you imaging again Al
nice and sharp first light.

Russ

Thanks Russel,
it's nice to get some encouragement in what is a difficult but rewarding hobby.

cheers
Allan
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  #24  
Old 16-10-2015, 11:09 PM
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alpal
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Quote:
Originally Posted by E_ri_k View Post
Nice one Allan, good first light, those dust lanes stand out well
Erik

Thanks Erik,
your image shows even better dust lanes.
You did however put a lot my time into yours.

cheers
Allan
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  #25  
Old 16-10-2015, 11:13 PM
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alpal
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Quote:
Originally Posted by strongmanmike View Post
I'm totally with Ray here Al, some good basics have been achieved in this image and via a great display of perseverance on your part Hey, one day you too may be able to afford a $70K OTA but in the meantime, keep plugging away mate, look forward to seeing how you progress with your lill beasty

Mike

Thanks Mike,
it's not such an easy road to get results is it?
I don't know about $70 K OTAs.
The weather & seeing conditions in Melbourne don't make that worthwhile.
However as a remote robot scope at a dark site - now you're talking!

I like the idea of a portable system that can still work on my modified NEQ6 mount.
Using an OAG overcomes the guiding limitations so maybe one day I
can go on an astronomy holiday to a dark site?

cheers
Allan
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