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Old 15-12-2014, 07:21 PM
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alpal
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Join Date: Jan 2012
Location: Melbourne
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Quote:
Originally Posted by RickS View Post
It's an interesting interpretation, Allan, but I think the colours are quite pleasing.

Cheers,
Rick.
Thanks Rick,
I like the repro for all those colors of the rainbow.
Maybe pushed a bit hard on the colour but that's what I wanted.

cheers
Allan


Quote:
Originally Posted by rustigsmed View Post
nice work allan, I have been waiting for you to post a new pic, got to love this Melbourne weather ...

I like the original, you've managed to keep the dynamic range in check.
wouldn't mind seeing the 'greener' version for a comparo. there is so much OIII in there, many dslrs struggle to show any red.

cheers

rusty

Thanks Rusty,
I might re-do it again one day.
I'd prefer better data at the occasional 2 arc second seeing that we get in Melbourne
rather than the 3.3 to 4.5 arc second that I got.
It was windy on the night & I had to restart many sub-frames when
wind gusts hit the scope & the guide graph went off the scale.
I probably lost an hour of data from the wind.

As for DSLRs - you're right -
I have some old pics with a DSLR on my flickr photos
& they are no where near as good because the DSLR just can't get the Ha wavelength for reds.
Putting 50% of Ha into the Red channel boosted the red detail & power.

The QHY9 camera is great - I had it at -30 degrees Celsius
& I applied all darks, flats & bias frames that I made fresh the next day.
I also used an Astronomic CLS CCD filter in front of all filters.

cheers
Allan
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