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Astrophotography and Sketching >> CCD Imaging & Processing

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Dan Crowson
professor emeritus
*****

Reged: 10/08/10

Loc: O'Fallon, MO
North America and Pelican Nebulas (Sh2-117) Mosaic
      #6036914 - 08/20/13 04:51 PM

The North America Nebula (NGC 7000 and Caldwell 20) and the Pelican Nebula (IC 5070 and IC 5067) are both large emission nebulas located between 1,600 and 1,800 light-years away in Cygnus. They are collectively designated as Sharpless 117.

Top Left

Ha 9x1800s 270 minutes binned 1x1
RGB 8x300s 40 minutes each binned 2x2

Top Right / Bottom Left / Bottom Right

Ha 10x1800s 300 minutes each binned 1x1
RGB 8x300s 40 minutes each binned 2x2

1650 minutes total exposure 27 hours 30 minutes

Imaged from Dardenne Prairie, Missouri over eleven nights in May, June and July, 2013 with a SBIG ST-8300M on an Astro-Tech AT90EDT at f/6.7 603mm.

See the links to all the full size versions below.



HaRGB Full Size

RGB Full Size

Ha Full Size

Dan


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Mark72
professor emeritus


Reged: 09/19/12

Loc: Munich, Germany
Re: North America and Pelican Nebulas (Sh2-117) Mosaic new [Re: Dan Crowson]
      #6037758 - 08/21/13 06:18 AM

Great work Dan, such dedication.

Ha version is the most impressive.

Mark


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atalas
Carpal Tunnel


Reged: 02/21/05

Loc: Sydney,Australia
Re: North America and Pelican Nebulas (Sh2-117) Mosaic new [Re: Mark72]
      #6039585 - 08/22/13 04:43 AM

Dan,this is a real toughie for HaRGB blend don't you think?

You've done very well with It!


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Dean Salman
member


Reged: 10/28/10

Loc: Arizona
Re: North America and Pelican Nebulas (Sh2-117) Mosaic new [Re: atalas]
      #6039894 - 08/22/13 10:52 AM

Wow, awesome image and well done indeed. You should try SH2-119 right next door. It is over looked because of this one

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Dan Crowson
professor emeritus
*****

Reged: 10/08/10

Loc: O'Fallon, MO
Re: North America and Pelican Nebulas (Sh2-117) Mosaic new [Re: Dean Salman]
      #6040826 - 08/22/13 09:31 PM

Quote:

Wow, awesome image and well done indeed. You should try SH2-119 right next door. It is over looked because of this one




Dean,

I really appreciate you looking. I make extensive use of your site and it is probably what pushed me into shooting sharpless objects.

I think Sh2-119 might be a little too large for my field of view. I'm not sure that I'm up for another four panel mosaic.

Dan


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