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The North American and Pelican Nebulas

  • DaveGrennan
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  • IFAS Astronomer of the Year 2010
  • IFAS Astronomer of the Year 2010
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18 years 4 months ago #31480 by DaveGrennan
The North American and Pelican Nebulas was created by DaveGrennan
Despite an almost full moon last night I had some success imaging with a new lens I got. The lens is a Sigma 70-300mm Macro DG APO lens. For the HA channel I made a plastic ring to enable me mount my 2" HA filter in front of the camera lens. It seemed to work quite well.

Here's the result from last night.

webtreatz.com/component/option,com_zoom/...geNo,5/key,39/hit,1/

I'm pretty pleased with the performance of the lens. Looking forward to imaging on a decent moon free night without the HA filter.

Thing that surprised me was I seemed to be forever adjusting the focus on the lens. I dont know if it was the shutter opening and closing, but it did move over a few exposures. So out of 35 exposures on the HA channel I had to dump 8 or so:( Might try using a bit of blue-tack next time to see if that keeps it fixed!! Nothing like a low-tech solution to a hi-tech problem eh!

Regards and Clear Skies,

Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here

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18 years 4 months ago #31481 by michaeloconnell
Replied by michaeloconnell on topic Re: The North American and Pelican Nebulas
That's a great shot Dave! I'm surprised yoy got that level of detail with the moon around.

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18 years 4 months ago #31482 by dave_lillis
Replied by dave_lillis on topic Re: The North American and Pelican Nebulas
I was also out that night and the sky was almost blue, it never got really dark, so a nebula image under those conditions is very good!

There is some nice detail in there.

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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18 years 4 months ago #31491 by Jed Glover
Replied by Jed Glover on topic Re: The North American and Pelican Nebulas
Looks great Dave!

Interesting to see what you could get on that target with no moon.

Later,

Jed.

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18 years 4 months ago #31495 by TrevorDurity
Replied by TrevorDurity on topic Re: The North American and Pelican Nebulas
great image Dave, especially with the full moon. I couldn't really make the object out two nights ago despite using an Ultrablock.
Yep, Sigma really make quality lenses.

T

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18 years 4 months ago #31512 by Keith g
Replied by Keith g on topic Re:
Good job Dave, years ago not many would touch a sigma lens :P

Might try using a bit of blue-tack next time to see if that keeps it fixed!! Nothing like a low-tech solution to a hi-tech problem eh!


Me too! Many times over, though is bad in the cold, just use some sticky tape if you don't mind it :idea:

Surprising to see the level of detail considering full moon time, I can't wait to see your go with the moon out of the way.

Thumbs up!
Keith..

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