Thread: Rho Ophiuchi
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Old 03-03-2014, 06:06 PM
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avandonk
avandonk

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Join Date: Aug 2005
Location: Melbourne
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Quote:
Originally Posted by gregbradley View Post
That looks very good Bert. You really get super good contrast on the dust areas on this and on Corona Australis. An advantage of the F3?
I don't normally see such good contrast.


Greg.

Greg this is only from four minute subs taken last year. Apart from an F3 optic and an Atlas focuser and a 10 position CFW on a MX mount my major problem is colour gradients. At F3 they are horrific! If you can collect dim stuff you also collect all the light pollution.

I am going to collect some 8 min subs tonight of the bottom bit of the Coal Sack.

Bert
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