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Old 19-05-2011, 10:59 PM
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multiweb (Marc)
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Prawn Nebula in Hydrogen Alpha

Here's another one I've just finished processing. Slightly noisy on the edges due to misaligned frames during registration. I took this data over three nights, some had better seeing than others. All up 38x10min so a bit over 6hours.

There's a higher res here [1759x1294px] (4.3MB) and a big one in TIFF format here [2932x2156px] (12MB).

Again I'll complete this with some Oiii and Sii. Not an AG12's sid by a long shot but it still holds its liquor IMHO

Thanks for looking.
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Old 19-05-2011, 11:17 PM
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Very nice Marc.

Greg.
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Old 20-05-2011, 05:28 AM
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Great shot Marc. 380 mins is quite a committment.
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Old 20-05-2011, 07:22 AM
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Excellent image as always Marc. Clocking up some hours under the clearish Sydney skies I see.

Wayne
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Old 20-05-2011, 09:05 AM
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Quote:
Originally Posted by gregbradley View Post
Very nice Marc.

Greg.
Thanks Greg.
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Originally Posted by peter_4059 View Post
Great shot Marc. 380 mins is quite a committment.
Thanks Peter. Yeah I go through phases with astro-imaging. Stick it to the clouds!
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Originally Posted by madwayne View Post
Excellent image as always Marc. Clocking up some hours under the clearish Sydney skies I see.

Wayne
Thanks Wayne. Yes I sure did while it lasted. Still going to see Xmen First CLass - 2nd of June though even if it's sparkling clear
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Old 20-05-2011, 09:21 AM
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It looks pretty nice to me Marc ...ummm? which of your outfits took it?

Mike
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Old 20-05-2011, 09:50 AM
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Marc, this is a very solid beginning for an NB image and to do it justice will need quite a few hours of OIII AND SII. I admire your commitment and it will be a great shot when finished. Haven't had clear skies here for a week or so.
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Old 20-05-2011, 11:15 AM
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Nice shot Marc....can't wait to see the finished product!!
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Old 20-05-2011, 12:04 PM
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It looks pretty nice to me Marc ...ummm? which of your outfits took it?

Mike
Thank Mike. Same outfit. The one that works consitantly APO 90mm at prime focus with the QHY8 and Baader 7nm Ha. 600mm FL. I'm ecstatic with the new refractor. I'm not used to something that doesn't go out of collimation when you sneeze on it.

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Marc, this is a very solid beginning for an NB image and to do it justice will need quite a few hours of OIII AND SII.
Thanks Allan. Glad you like dit. That's the plan soon to start on the Oiii first and do some HaOiiOii blends to start with until I get some decent Sii. That's going to be the hard bit.
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I admire your commitment and it will be a great shot when finished. Haven't had clear skies here for a week or so.
That was quite easy actually. I stayed on the same side of the meridian all those nights. Started around 7:00pm on Eta/NGC3576 worked my way down to NGC6188, then IC4628, bit of catpaw next on the way and finish with a bit of M16. So I clock a bit more time on all of them as the sky unfolds from the east each night. A bit like channel zapping on the telly

PS: I try to avoid M8 but it's hard...

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Nice shot Marc....can't wait to see the finished product!!
Thanks Carl. If I can manage to keep the Oiii/Sii tight it should be cool.
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Old 20-05-2011, 12:06 PM
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Great work Marc, at what f/ ratio was it taken?
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Old 20-05-2011, 12:09 PM
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Nice work Marc
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Old 20-05-2011, 12:09 PM
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Great work Marc, at what f/ ratio was it taken?
Thank you very much David. 600mm FL for 90mm aperture so f/6.6.

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Nice work Marc
Thanks Trev.
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Old 20-05-2011, 01:31 PM
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Thanks for looking.
No no no....thank YOU for posting.
It's a splendid image Marc.
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Old 20-05-2011, 02:09 PM
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No no no....thank YOU for posting.
It's a splendid image Marc.
Thanks JJJ! Waaayy too kind.
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Old 20-05-2011, 04:34 PM
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Very nice Marc. I am really enjoying the Ha mono images now. It's more like the look through a scope on steroids.
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Old 20-05-2011, 04:39 PM
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Very nice Marc. I am really enjoying the Ha mono images now. It's more like the look through a scope on steroids.
Well put. It is isn't it? Although I have never done NB from a dark site and I don't know if it would look marginally better but you're absolutely right. Ha is a bulldozer. You can get away with a lot between the moon and LP.

Thanks!
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Old 20-05-2011, 08:02 PM
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Marc what do you use for guidng with the G11, software method etc
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Old 20-05-2011, 08:20 PM
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Marc what do you use for guidng with the G11, software method etc
QHY5 on a 8x50 finder scope with PHD - default settings.
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Old 20-05-2011, 08:40 PM
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Are you guidng on camera or through Gemini net
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Old 20-05-2011, 09:17 PM
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Beautiful image Marc. The Ha shots look fantastic.

Mark
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