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

Acquisition details

Dates:
Feb. 28, 2014
Frames:
80×120(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

File size: 5.4 MB

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