Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)
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Wolf Rayet Nebula G2.4+1.4, 


            Russ Carpenter
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Wolf Rayet Nebula G2.4+1.4

Technical card

Dates:Aug. 19, 2019

Frames: 15x600"

Integration: 2.5 hours

Avg. Moon age: 18.34 days

Avg. Moon phase: 86.25%

Astrometry.net job: 2871639

RA center: 17h 45' 43"

DEC center: -26° 12' 21"

Pixel scale: 0.964 arcsec/pixel

Orientation: -89.736 degrees

Field radius: 0.436 degrees

Resolution: 2188x2416

Data source: Amateur hosting facility

Remote source: ChileScope


According to my Google search, no color images of G2.4+1.4 have been published. Apparently, this will be the first one.

G2.4+1.4 is a Wolf Rayet nebula located in Sagittarius. It has been the subject of intense scientific study. The central star, WR102, is the most extreme oxygen sequence Wolf Rayet star known.

I imaged all three narrowband channels: Ha, OIII and SII. The object of interest generated distinct signals in Ha and OIII, but practically nothing in SII. I used Pixelmath to create a custom palette. Because the background has such dense clumps of gas, dust and stars, this was not easy processing.

Tech Notes:
ASA Newtonian, 500 mm aperture, 1900mm focal length, F3.6
FLI Proline 16803, 9 mm pixel, 4096 X 4096
ASA DDM85 equatorial mount
Processing with PixInsight and Affinity Photo


Sky plot

Sky plot


Wolf Rayet Nebula G2.4+1.4, 


            Russ Carpenter