Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Great Nebula in Orion  ·  Horsehead nebula  ·  IC 431  ·  IC 432  ·  IC 434  ·  IC 435  ·  M 42  ·  M 43  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1981  ·  NGC 1982  ·  NGC 1999  ·  NGC 2023  ·  NGC 2024  ·  The star 42Ori  ·  The star 45Ori  ·  The star Alnitak (ζOri)  ·  The star θ1Ori  ·  The star θ2Ori  ·  The star ιOri  ·  The star σOri
Horsehead to the Sword, 



    
        

            Callum Hayton
Horsehead to the Sword
Powered byPixInsight
Horsehead to the Sword, 



    
        

            Callum Hayton
Horsehead to the Sword
Powered byPixInsight

Equipment

Imaging Telescopes Or Lenses
Canon EF 200 f/2.8 L USM II
Mounts
SkyWatcher NEQ6 pro Goto
Software
DeepSky Stacker 3.3.3 Deep Sky Stacker 3.3.3 · Photoshop CS5

Acquisition details

Dates:
Feb. 28, 2014
Frames:
80x120" (2h 40')
Integration:
2h 40'
Avg. Moon age:
28.57 days
Avg. Moon phase:
1.05%

Basic astrometry details

Astrometry.net job: 217518

RA center: 05h37m48s.2

DEC center: -03°5414

Pixel scale: 4.532 arcsec/pixel

Orientation: 114.256 degrees

Field radius: 3.146 degrees

Resolution: 4590x1977

Description

Never planned on making this a mosaic really, hence the different exposure settings for each pane. After a couple stretches in PS it became apparent that the difference in ISO, f ratio and over all exposure time were going to make it quite tough to process so i ended up being a bit careless and not putting as much effort in as i perhaps should of! But it will do until i can make a fresh start on a similar image, perhaps including M78 off to the left.

Exposure for left:

50* 180 seconds, f3.2, ISO 800, calibration frames, 200mm

Exposure for right:

29* 120 second exposures, f2.8, ISO 1600, calibration frames, 200mm

Individual images:

Horsehead - www.flickr.com/photos/[email protected]/12840041974/

M42 - www.flickr.com/photos/[email protected]/12726565755/

Comments

Sky plot

Sky plot

Histogram

Horsehead to the Sword, 



    
        

            Callum Hayton