StormEffects

Nightscapes & Deep Sky Colors

Astrophotography Brian A. Morganti


IC 5070 - 5076 Pelican Nebula

Cygnus

 

 

The Pelican Nebula is an emission nebula located 1500 light years away in the constellation Cygnus and is separated from the adjacent North American Nebula by a broad band of light-absorbing dark clouds. The Pelican is part of a large cloud of hydrogen gas that is excited by stellar energy and then emits its own light at the characteristic red wavelength of hydrogen-alpha (Ha) at 656.3nm.

This rich region of emission nebulae and dark nebulae just east of Deneb is an active area of star formation powered by the light from young energetic stars. The complex form of the nebula is created by shock waves from the outflows of newly formed stars and intense ultraviolet radiation. This radiation erodes the molecular cloud, but some parts survive and are visible in the form of the "elephant trunks" - long columns or pillars of gas and dust out of which stars are forming.

The two brightest stars in the frame are 56 and 57 Cygni.  56 Cygni, at lower right shining at magnitude 5.0, is located 136 light-years away. 57 Cygni, at upper left, shines at magnitude 4.7 and is located 500 light-years away. These two stars are actually in the foreground, lying well in front of the nebula.

North is towards the top of the image.

IMAGE DETAILS:

  • Date & Location:  August 23, 2015 - StormEffects Observatory - Bernville, PA

  • Weather:  Calm wind - 58F average.

  • Sky Conditions:  Clear with above average transparency. 

  • Optics:  TeleVue NP101is Refractor (810mm -f/8.1).

  • Filter:  Astronomik CLS-CCD (Light Pollution Suppression)

  • Mount:  AP900GTO

  • Guiding:  Orion SSAG @ 5 ceconds - good graph

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

  • Exposure:  20 - 8 minute subs (2 hours 40 minutes) @ ISO 1600, RAW

  • Calibration Frames:  12 Dark & Bias Frames - 10 Field Flats w/Alnitak Flat Man

  • Processing:  Images Plus - DSLR LLRGB in PS CS6 - Carboni Actions - NIK

  • Comments:  It has been six years since I last photographed the Pelican Nebula and I wanted to see what improvements I might be able to make with both better imaging and processing techniques. 

Previous Wide Field Image Show Below

                                                                                                           

 

The Pelican Nebula is an emission nebula located in the constellation Cygnus and is separated from the adjacent North American Nebula (partially visible on the left side of the photo) by a broad band of light-absorbing dark clouds. The Pelican is part of a large cloud of hydrogen gas that is excited by stellar energy and then emits its own light at the characteristic red wavelength of hydrogen-alpha (Ha) at 656.3nm.

IMAGE DETAILS:

  • Date & Location:  October 21, 2009 (evening)- Bernville, PA

  • Weather:  Calm wind - 48F.

  • Sky Conditions:  Scattered high clouds with below average transparency. 

  • Optics:  TeleVue TV60is Refractor (360mm -f/6) with field flattener.

  • Filter:  Hutech IDAS-LPS (Light Pollution Suppression)

  • Mount:  Losmandy G-11 equatorial with Gemini V4

  • Guiding:  None

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

  • Exposure:  16 min (4 x 4 min) @ ISO 800, RAW

  • Calibration Frames:  In camera dark frame subtraction

  • Processing:  Photoshop CS4, Noise Ninja, NIK 

  • Comments:  This is one of my first light images that was tracked, but not guided.  Star Trailing resulted in part due to an off center polar alignment scope reticle and the need for Periodic Error Correction (PEC).

 

                                                                        

Astrophotography  -  Nightscapes & Deep Sky Colors

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