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Old 14-03-2013, 01:30 PM
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Tandum (Robin)
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First Light.

Got myself a GSO 12" newt with a 3" ASA corrector and TS-Giant OAG with a qhy5L II coupled to an sx wheel and atik 11000. Maxim tells me it's running at 1149mm or F3.83.
All the bits are finally here and it stopped raining late last night so I could dial in the OAG and snap a few test shots of M8.
CCDI says I've got some droop in there and the 3.5inch secondary isn't big enough for this camera but it's a worker, even with 25Kgs in counterweights on the eq6

This is 7 x 10min Ha subs of M8 and a pic of the camera/corrector assembly.

Just levels and curves on M8.
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Old 14-03-2013, 01:34 PM
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That's really very nice. Congrats on your new setup. It looks impressive.

Greg.
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Old 14-03-2013, 01:42 PM
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Octane (Humayun)
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Wow, Robin -- that is very impressive. Looks like you've got nice stars across the frame. f/3.83. :O :O :O

How much does one of those Newtonians cost and what do they weigh?

H
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Old 14-03-2013, 02:01 PM
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Lovely detail - smooth as silk!
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Old 14-03-2013, 02:03 PM
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Tandum (Robin)
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Cheers Greg, still got some gremlins in there but if the weather comes good I should get em out. I need to build a new light box for it too.

H, I see em at Andrews for $949, but I can't remember what I paid, I've been fiddling with it for quite some time. The new spider/holder only arrived yesterday, the original was wiggling around. James has a pretty good mod guide on his site. I changed the spider, added grub screws to the focuser (it was rocking with only 2 screws), put a galv plate under the focuser to stop flex and flocked it as well. I guess it's about 20Kgs out of the box, plus mods, rings and camera would push it to 25Kgs. The corrector cost more than the scope

Thanks Paul, might put the RGB filters in for the week-end.

Last edited by Tandum; 14-03-2013 at 02:21 PM.
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Old 14-03-2013, 02:34 PM
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RickS (Rick)
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Good to see you're up and running, Robin!
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Old 14-03-2013, 03:19 PM
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Excellent image Robin, very smooth. You were up late last night as I saw scorpio rising and thought about m20 but it was 3am so I went to bed.
Allan
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Old 14-03-2013, 03:34 PM
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Tandum (Robin)
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Me too Rick. That tube has been standing in the lounge room since early December

The last sub is time stamped 2:46 Allan.
I only had to sit around and install a new server today, didn't need to be chirpy for clients
I think Saturday night will be a pearler.
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Old 14-03-2013, 03:51 PM
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Octane (Humayun)
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Thanks for the info, Robin! Glad to see that your tinkering has paid off. That's a beautiful field!

H
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Old 14-03-2013, 05:21 PM
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strongmanmike (Michael)
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Great first light Robin (Marc Aragnou will love it) and so far so good

Mike
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Old 14-03-2013, 05:27 PM
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asimov (John)
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Fantastic image!
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Old 14-03-2013, 09:08 PM
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ozstronomer (Geoff)
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Nice image Robin, looks like that will be a great imaging rig.

Lets hope your are right for Saturday's weather report
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  #13  
Old 14-03-2013, 09:13 PM
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multiweb (Marc)
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Looks great. Really nice field.
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Old 14-03-2013, 11:23 PM
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DavidTrap (David)
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Very impressive Robin.

Fingers crossed for the weekend.

DT
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Old 15-03-2013, 09:42 AM
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You've got that working nicely Robin. That corrector is producing some very fine stars.
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  #16  
Old 15-03-2013, 10:41 AM
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FlashDrive (Poppy)
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That's a great image ...very clean, defined and smooth.
Congratulations.

Flash ..!!
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  #17  
Old 15-03-2013, 06:07 PM
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Robin, thats really an excellent image with very tight stars. Your efforts have really paid off.
Allan
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  #18  
Old 15-03-2013, 07:09 PM
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Tandum (Robin)
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Thanks for all the comments but remember that's a Ha image, to me stars always look tighter in Ha.
Wait til I post some gradient ridden horror in RGB

I did swap the carousel to RGB today and found the corrector wasn't all the way in so that might fix a couple of issues, like that dark spot bottom left. The field seems to be as flat as the TAK, maybe more so. But no good for galaxies and I no longer have a long FL scope, sold it
Maybe a smaller camera will do it. Still waiting for Mike to post something there

Before I forget, does anyone local have a 2" sight tube. I wanna double check the secondary is right.
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Old 15-03-2013, 07:19 PM
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strongmanmike (Michael)
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Quote:
Originally Posted by Tandum View Post
Still waiting for Mike to post something there
Yes, sorry'bout that , I am just waiting for the observatory really, the potential resolution increase will be wasted in the regular strong breezes I get, it will most likely only show the benefits if I can get out of the wind and only on the good nights (like the last)

You could just take a punt...

Mike
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  #20  
Old 15-03-2013, 07:23 PM
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Tandum (Robin)
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No rush here, I'm still waiting for the eq8, that's the next expense.

The dome will make a huge difference, it did here. Just switch on and go

And not a dew strap in sight
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