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Old 18-12-2009, 07:15 PM
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Bassnut (Fred)
Narrowfield rules!

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NGC3576 NB 1st light (sort off)

Hi All

Its been a very long time since I posted a pic, the weather in Sydney has been appalling for months, this effort has taken that long to collect (plus huge mucking around setting up from scratch).

Anyway, this is my 1st one with my RCOS and PME back here in my OBs in Sydney, with some new toys attached (rotator, OAGer, AO8).

I was pretty keen to up the anti with this setup, but object choice was not the best. Its dim and it was very low in the sky, seeing was terrible, and I chose to to image at 2275 mm FL, given I have an OAGer and PME now, but flexure is gone, and I have perfect guiding. 3nm Ha is painfull with a 10" at 2275 in urban skies with bad seeing, the neb ADUs were small, and buried in noise.

The 10" also required 20min subs with the 3nm Ha and 6nm SII and OIII filters, I could get away with 15 min subs on the 12" meade, so the apature drop was a bit painfull, but focus was tighter.

The subs were 10hrs Ha bin1, 4 hrs OIII bin2, 3 hrs SII bin2 processed as Ha;SII;Ha;OIII, mapped as LRGB.

The stars look wonky on close view, and I intend imaging in RGB for natural stars so there is still work to do.

Anyway, here is NGC3576 in NB for your pleasure.

Last edited by Bassnut; 19-12-2009 at 08:31 AM.
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Old 18-12-2009, 07:23 PM
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multiweb (Marc)
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Very impressive Fred. Coincidentaly there's an APOD today of the same object. I was googling it to check where it was. Yours is a small portion around the core. Pretty deep! Top stuff.
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Old 18-12-2009, 07:47 PM
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Bassnut (Fred)
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Thanks Marc. Deep was a problem actually, given the polluted skies, hence the clipped background, sigh, its either Sydney or megabucks remote dark sky action .

APOD today?, I see Phil Hart got that one (and congrats for that too )
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Old 18-12-2009, 08:00 PM
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strongmanmike (Michael)
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Man it must be great seeing all that top kit up in the back yard and saying...that's miiiiiine

Yes, the res looks to be there Fred

Mike
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Old 19-12-2009, 12:48 PM
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multiweb (Marc)
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Quote:
Originally Posted by Bassnut View Post
Thanks Marc. Deep was a problem actually, given the polluted skies, hence the clipped background, sigh, its either Sydney or megabucks remote dark sky action .

APOD today?, I see Phil Hart got that one (and congrats for that too )
Yeah you're right Should have checked the date. Congrats Phil. Top shot.
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Old 20-12-2009, 08:48 AM
jase (Jason)
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Fred,
Bluntly put, you could do better. I enjoyed the composition and details you've extracted, but the colours don't display the palette you're portraying. Looks more like space art than an astro image. Perhaps time for a repro.
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Old 20-12-2009, 10:57 AM
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Bassnut (Fred)
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jase

I know, your right, ugggh. The more I look at it the worse is gets.
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