Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Great Nebula in Orion  ·  M 42  ·  M 43  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1981  ·  NGC 1982  ·  The star 42Ori  ·  The star 45Ori  ·  The star θ1Ori  ·  The star θ2Ori  ·  The star ιOri
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The Orion Nebula - 10/16/09, 


The Orion Nebula - 10/16/09
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The Orion Nebula - 10/16/09

Technical card

Imaging telescopes or lenses: Stellarvue SV80ST

Imaging cameras: Canon EOS 400D / Digital Rebel XTi

Mounts: CGEM

Guiding telescopes or lenses: Celestron 50mm Spotting Scope

Software: PHD guiding  ·  PixInsight  ·  Nebulosity

Dates:Oct. 16, 2009

Frames: 9x600" ISO800 bin 1x1

Integration: 1.5 hours

Avg. Moon age: 27.70 days

Avg. Moon phase: 3.74%

Basic astrometry details

Astrometry.net job: 118793

RA center: 5h 35' 34"

DEC center: -5° 16' 40"

Pixel scale: 4.694 arcsec/pixel

Orientation: 85.468 degrees

Field radius: 1.477 degrees

Resolution: 620x388


This is some older data that I reprocessed with PixInsight 1.5 as part of my trial. It stacks exposures of varying lengths very nice in order to expose the details of the trapezium. Very impressed!

The Orion Nebula is an active star forming region in our galaxy that lies approximately 1350 light years distant. Many of the stars below are very young (only several 100,000 years old) and were formed from the gas and dust you see surrounding them. Regions like this are also known as "stellar nurseries". The red regions are hydrogen gas (primary star formation gas) that have been ionized by energy from a very near star. This is also known as plasma and is the same thing you find in many televisions today. The blue/grey regions are primarily dust and some hydrogen (and other) gas that are not close enough to an energy source (star) to be ionized. As such they end up reflecting light in the blue spectrum.


Sky plot

Sky plot


The Orion Nebula - 10/16/09,