ICEINSPACE
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Moon Phase
CURRENT MOON
Waxing Gibbous 96.4%
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04-02-2009, 05:35 PM
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Registered User
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Join Date: Mar 2005
Location: Sydney
Posts: 5,151
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Nice work Greg!
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04-02-2009, 05:36 PM
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Highest Observatory in Oz
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Join Date: May 2006
Location: Canberra
Posts: 17,693
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Quote:
Originally Posted by gregbradley
Hi Mike,
The Apogee CCD chamber is sealed and filled with gas - not sure if argon or something else. The mask went on the outside of the CCD chamber and behind the shutter and you could do it yourself. Perhaps they have a different type of mask. Does it go inside the CCD chamber? Or is the whole body of the camera sealed?
Greg.
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If the Apogee CCD chamber is filled with gas then you can't open it and place the mask diectly around the chip then either..? So does the mask supplied by Apogee for their cameras fit on the "outside" of the CCD window?
Mike
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04-02-2009, 05:40 PM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
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Quote:
Originally Posted by strongmanmike
If the Apogee CCD chamber is filled with gas then you can't open it and place the mask diectly around the chip then either..? So does the mask supplied by Apogee for their cameras fit on the "outside" of the CCD window?
Mike
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That's correct Mike. The mask goes behind the shutter and attaches to it and that is in front of the CCD chamber.
Greg.
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04-02-2009, 05:40 PM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
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Quote:
Originally Posted by atalas
Nice work Greg!
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Thanks Louie!
Greg.
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04-02-2009, 05:48 PM
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Always looking up
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Join Date: Jan 2007
Location: Wollongong
Posts: 730
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Very nice Greg, love the colours...very very nice.
Paul
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04-02-2009, 05:54 PM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
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Quote:
Originally Posted by peeb61
Very nice Greg, love the colours...very very nice.
Paul
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Thanks Paul. The Baaders are good that way - especially with the reds but perhaps underperform slightly in the blues.
Greg.
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04-02-2009, 06:04 PM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
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Quote:
Originally Posted by glenc
Wow  |
Thanks Glen.
Greg.
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05-02-2009, 04:18 PM
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Moderator
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Join Date: Aug 2005
Posts: 26,648
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Gregory.........That Is Absolutely Stunning my friend !!
Absolutely wonderful to look at !
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05-02-2009, 04:40 PM
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Billions and Billions ...
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Join Date: Mar 2007
Location: Quialigo, NSW
Posts: 3,143
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Lovely image Greg!!!
Being picky ... perhaps the star colours could be enhanced a tad though?
Cheers, Marcus
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05-02-2009, 04:52 PM
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ze frogginator
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Join Date: Oct 2007
Location: Sydney
Posts: 22,080
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Wow!  So cool. Very very nice picture. Love the colors and the details. Top work.
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05-02-2009, 05:54 PM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
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Quote:
Originally Posted by marc4darkskies
Lovely image Greg!!!
Being picky ... perhaps the star colours could be enhanced a tad though?
Cheers, Marcus |
Thanks Marcus. I did enhance them to the extent I felt comfortable with. I think with all the nebulosity and dust around that is the colour. I have seen other images of the area and they also show the stars the same. Its one of those areas where the stars are simply not colourful due to dust and gas.
Quote:
Originally Posted by multiweb
Wow! So cool. Very very nice picture. Love the colors and the details. Top work. |
Thanks Marc.
Greg.
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06-02-2009, 01:28 AM
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Love reflection Nebs !
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Join Date: Aug 2006
Location: Streaky Bay
Posts: 1,070
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Top stuff Greg,
nice to see what this scope can do!
Really good fov showing all the extended areas around M78.
Even fit McNeils neb in.
Yes, I do love this object......
Lots of stuff goin' oonn
More please!
All the best
Rich
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07-02-2009, 01:51 PM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
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Thanks Rich.
Greg.
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07-02-2009, 02:11 PM
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Star Struck
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Join Date: Nov 2007
Location: Canberra
Posts: 2,797
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That's beautiful Greg. I've never seen such a detailed image of M78 before.
So much to see. Well done.
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07-02-2009, 02:26 PM
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Galaxy hitchhiking guide
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Join Date: Dec 2007
Location: The Shire
Posts: 8,484
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Very nice work Greg, pretty much as good as it gets.
The stars at lower left are a little eggy....... very hard to avoid with mega CCD's due to orthogonality errors that creep into places unknown.
A keeper for sure
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07-02-2009, 03:16 PM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
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Quote:
Originally Posted by Matty P
That's beautiful Greg. I've never seen such a detailed image of M78 before.
So much to see. Well done. |
Thanks Matty.
Quote:
Originally Posted by Peter Ward
Very nice work Greg, pretty much as good as it gets.
The stars at lower left are a little eggy....... very hard to avoid with mega CCD's due to orthogonality errors that creep into places unknown.
A keeper for sure |
Yuri did a detailed test of the feathertouch focuser recently for sag in different orientations (it rotates). After reading that I would normally try to have it so the focuser is upside down as this gives the least sag. How it worked out with the screw on adapters was it was more side on. This may have given very slight sag as it is a fairly heavy camera with the filter wheel as well. I will try to orient it next time so the focuser is upside down and that slight eggy corner star may well go.
Greg.
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08-02-2009, 01:51 AM
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Highest Observatory in Oz
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Join Date: May 2006
Location: Canberra
Posts: 17,693
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Quote:
Originally Posted by Peter Ward
The stars at lower left are a little eggy....... very hard to avoid with mega CCD's due to orthogonality errors that creep into places unknown.
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They are...?
I am looking at this image and the stars by eye are absolute pinpoint corner to corner to me. 
http://www.pbase.com/gregbradley/ima...30707/original
Or have you fixed them Greg?
Mike
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08-02-2009, 02:29 PM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
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Quote:
Originally Posted by strongmanmike
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No haven't done anything.
In the narrowband images I notice they are pinpoint corner to corner. I think Peter is referring to very slight elongation on the bottom left. Very minor and could have been from one sub or two but not generally as I was checking for that. It was the first use of an adapter that set the camera at the correct metal back distance. Its possible a few may have copped a bit of wind as well. Surprisingly sharp considering how windy it was. I am talking 40kmh + winds.
Cheers,
Greg.
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08-02-2009, 05:51 PM
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Supernova Searcher
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Join Date: Mar 2005
Location: Cambroon Queensland Australia
Posts: 9,326
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Greg I think you have captured the reappearance of McNeill's Nebula in your image.
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08-02-2009, 06:51 PM
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Highest Observatory in Oz
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Join Date: May 2006
Location: Canberra
Posts: 17,693
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Quote:
Originally Posted by gregbradley
I think Peter is referring to very slight elongation on the bottom left.
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I am at a loss why anyone would bother saying anything about those stars...?
Perhaps Peter has astigmatism in his eyes? I do and if I am a certain distance from pinpoints on the screen they do indeed look elongated, moving much closer to the pinpoints reveals their true nature and turning your head 90deg elongates them in the other direction confirming your astigmatism...So Peter, try putting your head close to the screen and turning it and have another look.
Mike
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