Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Horsehead nebula  ·  IC 431  ·  IC 432  ·  IC 434  ·  IC 435  ·  NGC 2023  ·  NGC 2024  ·  The star Alnitak (ζOri)  ·  The star σOri
Horsehead region, 



    
        

            Bruce
Horsehead region
Powered byPixInsight
Horsehead region, 



    
        

            Bruce
Horsehead region
Powered byPixInsight

Technical card

Imaging telescopes or lenses: William Optics Star 71

Imaging cameras: Atik 460 EX

Mounts: Astro-Physics Mach1AP GTO with GTOCP3

Guiding telescopes or lenses: Vixen VC 200L

Guiding cameras: Orion StarShoot Autoguider

Software: PHD guiding  ·  SequenceGeneratorPro  ·  photoshop  ·  Pleiades Astrophoto PixInsight 1.8 Ripley  ·  CCDStack 2+

Filters: Ha 3nm  ·  Astrodon Tru-Balance Generation 2 LRGB

Accessory: Atik EFW2



Basic astrometry details

Astrometry.net job: 712077

RA center: 5h 41' 18"

DEC center: -2° 15' 7"

Pixel scale: 3.975 arcsec/pixel

Orientation: 89.825 degrees

Field radius: 1.261 degrees


Resolution: 1800x1405

Locations: Meadowlark Ridge Observatory, New Glarus, Wisconsin, United States

Description

This remarkable area of nebulosity is located near the star Alnitak which is the easternmost star in Orion’s belt. The radiation from Alnitak causes the nebulae to emit light. The Horsehead Nebula runs south (right) from Alnitak and is designated IC 434. It is the bright red region in the photo. The Flame Nebula (NGC 2024) lies just below (east) of Alnitak. Dark dust lanes overlay this nebula giving it the appearance of a burning flame. The blue reflection nebula below and to the left of the Horsehead is NGC 2023 with yet another smaller reflection nebula (IC 435) directly below it. Just to the left (north) of the Flame Nebula lie two more blue reflection nebulae – IC 431 and IC 432. The brownish cloudy material seen in this image is interstellar dust. This area is one of the most photographed areas in the night sky.

Exposure: William Optics Star71 f/4.9 (348mm), Atik 460EX. Ha:L:RGB 6 x 1200sec: 7 x 60sec plus 7 x 360sec: 8 x 360sec bin 2x2.

Comments

Sky plot

Sky plot

Histogram

Horsehead region, 



    
        

            Bruce