StormEffects

AstroTrac Widefield & Deep Sky Images

Astrophotography Brian A. Morganti


~ AstroTrac ~

Milky Way

North American Nebula - NGC7000

Cygnus

 

   

   

                                                                                                      

 

These four views of the North American and Pelican Nebula were taken near the zenith with progressively higher focal ratio camera lenses.  The first image (top left) was taken with a 15mm Fisheye lens which features a broad expanse of  the Milky Way.  The North American Nebula can just barely be made out on the left center of the image.  If you look closely you can also see a small round emission nebula IC1396 on the left side of the image which contains Hershel's Garnet star, a bloated red giant and one of the brightest carbon stars in the sky.  

The image on the right was taken at a focal length of 35mm, the middle image at 135mm, and the bottom image at 200mm.  Image details are provided below.

IMAGE DETAILS:

  • Date & Location:  October 3, 2010 - Indian Lake, NY

  • Weather:  Calm wind - 38F.

  • Sky Conditions:  Clear with above average transparency. 

  • Optics:  1st Image -  15mm @ f2.8

  •                2nd Image - 17-40mm f2.8 lens set to 35mm f3.5

  •                3rd Image - 70-200mm f2.8 set to 135mm f3.5

  •                4th Image - 70-200mm f2.8 set to 200mm f3.5

  • Filter:  None

  • Mount:  AstroTrac TT320X-AG

  • Guiding:  None

  • Camera:  Canon T1i (500D) Hap Griffin Modified - Baader UV/IR

  • Exposure:  1st Image - 5 min (2 - 2 1/2 min)  @ ISO 800, RAW

  •                    2nd Image - 5 min (2 - 2 1/2 min) @ ISO 800, RAW

  •                    3rd Image - 12 min (1-2min, 2-3min, 1-4min) @ ISO800, RAW

  •                    4th Image - 12 min (1-2min, 2-3min, 1-4min) @ ISO1600, RAW

  • Calibration Frames:  In camera dark frame subtraction

  • Processing:  Images Plus 3.82b, Photoshop CS4, NIK 

  • Comments:  First night out with the AstroTrac---Polar Aligned. 

 

                                                                        

Astrophotography  -  Nightscapes & Deep Sky Colors

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