ICEINSPACE
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22-03-2013, 05:20 PM
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Highest Observatory in Oz
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Join Date: May 2006
Location: Canberra
Posts: 17,689
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Quote:
Originally Posted by rogerg
Mike,
I’ve been thinking about your Orion AG. It produces such nice results in part due to the matching of your focal length to chip size. I have been considering what OTA to replace my 12” SCT with. Current top contender is the 16” GSO RC when it comes out if it’s up to scratch. But your Orion has me thinking.
What’s the disadvantage to a fast focal ratio like your AG? Or is there a disadvantage to the position of the camera? Or is the only disadvantage cost and the telescope is otherwise perfect?
My thought goes like this: Not being on top of a Chilean mountain my FWHM is never going to get better than my usual 4”-6”. Pixel scale less than 1” is wasted on me, usually less than 1.5” is wasted on me. Hence, focal lengths > ~2000mm are wasted on me, but aperture I want. One can overcome this by binning 2x2 permanently or by decreasing the focal length. The Orion AG being the latter option.
Any comments based on your experience?
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All depends on what you have in mind, I wanted speed, aperture, semsitivity, versatility and portability (greedy huh  ). In my mind 1200mm FL provides the best compromise with a large chip and 9micron pixels to cover all bases quite well and the speeeeeed is a god send
I've sent you an email
Mike
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22-03-2013, 08:18 PM
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Registered User
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Join Date: May 2009
Location: Italy - Turin
Posts: 771
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Hi Mike ... Virgo time. A lot of galaxies to shot.
Very nice, wait for the color.
All the best,
Leo
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22-03-2013, 08:41 PM
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Casual Cosmos Capturer
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Join Date: Jun 2010
Location: Gold Coast SE QLD
Posts: 4,472
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Awesome Imaging, awesome field , hang on, ran out of words, , , oh, awesome details, and awesome equipment, so , overall, yep awesome stuff, top show and best for the colour Mike ! !
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22-03-2013, 08:47 PM
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Big Scopes are Cool
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Join Date: Jun 2007
Location: SE Tasmania
Posts: 4,574
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That's a really interesting field - haven't seen anything like it before. Thanks for sharing Mike
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23-03-2013, 05:12 AM
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There is no substitute
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Join Date: Jul 2012
Location: Sydney
Posts: 1,964
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Beautiful Mike! Very cool target
Is it possible to image Einstein Rings i.e. gravitational lensing with your setup or is that Professional Observatory/Hubble land
Just curious because that would be a cool fenoma to image
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23-03-2013, 07:41 AM
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Mozzies love me!
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Join Date: Aug 2009
Location: Brisbane
Posts: 1,287
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Quote:
Originally Posted by strongmanmike
I totally get your sentiment Mario, the image made me feel exactly the same... we need to image together, I can feel it
Mike 
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...and after we've finished a rousing chorus of "Nessun Dorma" whilst imaging, we'll get stuck into a slab of VB, listen to 2GB's continuous call team call the footy and then catch a bit of Blokesworld on Foxtel....
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23-03-2013, 07:54 AM
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Registered User
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Join Date: Apr 2007
Location: Cherrybrook, NSW
Posts: 5,013
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Great photo Mike.
So many galaxies......amazing!
Ross.
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23-03-2013, 12:32 PM
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avandonk
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Join Date: Aug 2005
Location: Melbourne
Posts: 4,786
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I downloaded your image Mike and subjected it to extreme torture so I could see the faint stuff. It was very revealing in the negative form. The signal to noise is very good for such a short data aquisition.
How big will your observatory be? I may just park my system there to take advantage of your dark skies.
Bert
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23-03-2013, 04:37 PM
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Highest Observatory in Oz
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Join Date: May 2006
Location: Canberra
Posts: 17,689
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Quote:
Originally Posted by Leonardo70
Hi Mike ... Virgo time. A lot of galaxies to shot.
Very nice, wait for the color.
All the best,
Leo
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Cheers Leo, there is so much in Virgo besides that in the more popular area
Quote:
Originally Posted by astronobob
Awesome Imaging, awesome field , hang on, ran out of words, , , oh, awesome details, and awesome equipment, so , overall, yep awesome stuff, top show and best for the colour Mike ! !
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Well that's just awesome to hear Bob
Quote:
Originally Posted by peter_4059
That's a really interesting field - haven't seen anything like it before. Thanks for sharing Mike
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Yes it is a cool bit of Virgo not in the more popular area of Makarians Chain
Quote:
Originally Posted by ourkind
Beautiful Mike! Very cool target
Is it possible to image Einstein Rings i.e. gravitational lensing with your setup or is that Professional Observatory/Hubble land
Just curious because that would be a cool fenoma to image 
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Gravitational lenses are very faint and fine details, very hard to pick up in amateur sized scopes. They can be detected but without a comparison with a Hubble image you would never know.
Quote:
Originally Posted by cybereye
...and after we've finished a rousing chorus of "Nessun Dorma" whilst imaging, we'll get stuck into a slab of VB, listen to 2GB's continuous call team call the footy and then catch a bit of Blokesworld on Foxtel.... 
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Too right
Quote:
Originally Posted by Ross G
Great photo Mike.
So many galaxies......amazing!
Ross.
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Cheers Rossco
Quote:
Originally Posted by avandonk
I downloaded your image Mike and subjected it to extreme torture so I could see the faint stuff. It was very revealing in the negative form. The signal to noise is very good for such a short data aquisition.
How big will your observatory be? I may just park my system there to take advantage of your dark skies.
Bert
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Cool, glad to hear, only fair, after sharing all your precious Italian photons
Suuuure!!!  I have a Sirius 2.3m Observatory kit in the shed
Mike
Last edited by strongmanmike; 23-03-2013 at 05:47 PM.
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24-03-2013, 09:24 PM
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Sandy Ridge Observatory
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Join Date: Mar 2008
Location: Gippsland, VIC
Posts: 768
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Nice work Mike. Looking forward to seeing this project progress.
Chris
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31-03-2013, 11:46 AM
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Mostly harmless...
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Join Date: Jul 2008
Location: Brisbane, Australia
Posts: 5,735
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Love it. Really gets you thinking about things looking at a field like that.
Glad to see your new home site is paying big dividends too Mike.
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