Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Flame Nebula  ·  IC 431  ·  IC 432  ·  IC 434  ·  IC 435  ·  NGC 2023  ·  NGC 2024  ·  Orion B  ·  The star Alnitak (ζOri)  ·  The star σOri
The Horsehead and Flame Nebulas, 



    
        

            Mitch Trilling
The Horsehead and Flame Nebulas
Powered byPixInsight

The Horsehead and Flame Nebulas

The Horsehead and Flame Nebulas, 



    
        

            Mitch Trilling
The Horsehead and Flame Nebulas
Powered byPixInsight

The Horsehead and Flame Nebulas

Technical card

Imaging telescopes or lenses: TEC APO 140

Imaging cameras: STL-11000M

Mounts: Astro-Physics AP 900 GTO

Guiding telescopes or lenses: TEC APO 140

Guiding cameras: STL-11000M

Focal reducers: TEC Field Flattener

Software: PixInsight 1.8  ·  Adobe Photoshop CS5  ·  Adobe Photoshop Lightroom 5  ·  Maxim DL Pro

Filters: Baader HaRGB Filter Set


Dates:Sept. 29, 2011Sept. 30, 2011Oct. 1, 2011

Frames:Baader HaRGB Filter Set: 94x300" (7h 50') -25C bin 1x1

Integration: 7h 50'

Darks: ~10

Flats: ~40

Bias: ~10

Avg. Moon age: 3.50 days

Avg. Moon phase: 13.93%


Basic astrometry details

Astrometry.net job: 3920371

RA center: 5h 40' 44"

DEC center: -2° 12' 7"

Pixel scale: 1.838 arcsec/pixel

Orientation: 78.513 degrees

Field radius: 1.201 degrees


Resolution: 3923x2597

Locations: Panther Creek State Park, Petersburg, IL, United States

Description

I shot this back in the fall of 2011 at the Illinois Dark Sky Star Party, but was unable to get the image processed to my satisfaction until I started using Pixinsight. By using pixel math I was able to combine the Red and Ha in the proper percentages to use as the red channel and later as the luminance channel weighted at 70%. This allowed me to get a much truer red and avoid the salmon colors that typically result when using Ha for luminance in an RGB image.

Comments

Revisions

  • The Horsehead and Flame Nebulas, 



    
        

            Mitch Trilling
    Original
  • Final
    The Horsehead and Flame Nebulas, 



    
        

            Mitch Trilling
    E

E

Description: This revision of my original image was touched up in the newest version of Adobe Lightroom using the dehaze tool. The noise was the reduced using Topaz Denoise AI.

Uploaded: ...

Sky plot

Sky plot

Histogram

The Horsehead and Flame Nebulas, 



    
        

            Mitch Trilling