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Old 12-05-2012, 09:14 AM
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Eta Carina NGC3372

Managed to get 18x5 min subs of NGC3372 on Thursday night before bed time. I'm quite pleased with how it turned out.

The Jpeg is heavily compressed to get it under the posting limit but there's a full res version here:

http://astrob.in/10814/

Thanks for looking - comments/tips welcome.
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  #2  
Old 12-05-2012, 09:28 AM
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tilbrook@rbe.ne (Justin Tilbrook)
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Hi Peter,

Some nice sharp detail in that eta image, your stars, look great almost pin point!

Cheers,

Justin.
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  #3  
Old 12-05-2012, 11:18 AM
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Looks good Peter, the larger image really show how sharp the stars are.

Well done
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Old 12-05-2012, 11:54 AM
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Excellent image of a well photographed nebula. Good to see the mmpc is working so well with the camera.
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  #5  
Old 12-05-2012, 12:41 PM
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Nice sharp photo but the colours seem too red to me.
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Old 12-05-2012, 01:06 PM
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Nice Peter. That seems a pretty wide FOV for the 10" though?
I'm probably just out of practice...!
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Old 12-05-2012, 01:46 PM
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Nicely done Rob.
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Old 12-05-2012, 02:10 PM
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Quote:
Originally Posted by alpal View Post
Nice sharp photo but the colours seem too red to me.
Colours look nice to me, there are red and blue stars to be seen - which is always the acid test to me, what the star colours are like.

I've seen Alpal comment on this before - I think your unmodded camera is just insensitive to H-alpha, which is fine if you're going for the "what it looks like to the eye". Ours eyes aren't very good detectors of what these objects are actually emitting though.


Cheers,
Cam.
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  #9  
Old 12-05-2012, 02:14 PM
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Quote:
Originally Posted by tilbrook@rbe.ne View Post
Hi Peter,

Some nice sharp detail in that eta image, your stars, look great almost pin point!

Cheers,

Justin.
Thanks Justin. I'm pretty happy with the MPCC.

Quote:
Originally Posted by ozstronomer View Post
Looks good Peter, the larger image really show how sharp the stars are.

Well done
Cheers Geoff. It's been a long time between images with the weather and gear issues so nice to get a good result for a change.

Quote:
Originally Posted by allan gould View Post
Excellent image of a well photographed nebula. Good to see the mmpc is working so well with the camera.
Thanks Allan. Think I've got the spacing pretty close now.

Quote:
Originally Posted by alpal View Post
Nice sharp photo but the colours seem too red to me.
Thanks Apal - I've not messed with the colour balance - that's how it comes off the camera. My DSLR makes EtaC look a lot bluer however I assume that is the Canon UV/IR filter cutting out the Ha. The QHY8 obviously passes a lot more Ha.

Quote:
Originally Posted by RobF View Post
Nice Peter. That seems a pretty wide FOV for the 10" though?
I'm probably just out of practice...!
That's it Rob - 63x42 arcmins with the MPCC.

Quote:
Originally Posted by jjjnettie View Post
Nicely done Rob.
Thanks Sue
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  #10  
Old 12-05-2012, 02:20 PM
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Quote:
Originally Posted by peter_4059 View Post


Thanks Sue

BTW, what image am I shooting tonight Peter ?
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  #11  
Old 12-05-2012, 02:25 PM
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Quote:
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BTW, what image am I shooting tonight Peter ?
It would have to be something in Scorpius I imagine!
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  #12  
Old 12-05-2012, 02:46 PM
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Stars look a little out of focus to me they look like little circles when zoomed in, and you have a little coma in the corners, other than that looks good.
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  #13  
Old 12-05-2012, 03:02 PM
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Thanks for the comments Peter. I think the focus was ok looking at one of the unstacked frames. Perhaps the circles are a stacking artifact?
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  #14  
Old 12-05-2012, 03:32 PM
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Lovely, mate. As others have commented, nice tight stars. Not a whole lot of blue in the Ha emission nebulae, is there? Colours look pretty close to me.
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  #15  
Old 12-05-2012, 03:40 PM
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you are an artist that knows his tools - very nice Peter.
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  #16  
Old 12-05-2012, 05:31 PM
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Peter
Quote:
Thanks Apal - I've not messed with the colour balance - that's how it comes off the camera. My DSLR makes EtaC look a lot bluer however I assume that is the Canon UV/IR filter cutting out the Ha. The QHY8 obviously passes a lot more Ha.
Yes same with me - a lot bluer with a stock DSLR.
You're just picking up all that red Ha with a CCD camera.
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  #17  
Old 12-05-2012, 06:07 PM
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multiweb (Marc)
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That's a really good shot Peter. Lovely details.
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