Gum 15
Gum 15 is a emission nebula in the constellation Vela. It lies at a distance of 3,000 light-years.
Gum 15 is shaped by aggressive winds flowing from the stars within and around it. The bright star in the center of the nebula is HD 74804, a double star.
This image captures Gum 15 through a Hydrogen Alpha filter.
Technical Details
- Object: Gum 15
- Other Names: BRAN 176, GRS G261.60 +00.90, RCW 32
- Object Type: emission nebula
- Object Data: Angular Size = ~100x100 arc-minutes
- Object Position (Equinox 2000): 08h 44m, -41° 15´, Constellation = Vela
- Date: 2021 Apr 24-27 (4 nights)
- Location: Chile Remote Observatory, Observatorio El Sauce, Chile
- Partnership: Operated in partnership with David Churchill
- Telescope: Planewave CDK-17 (with Focal Reducer: f/4.5; FL = 1945mm)
- Camera: QHY 16200A with Integral 7-position Filter Wheel
- Mount: Astro-Physics 1600GTO
- Guider: Agena Starguide II / SBIG STi
- Sub-Exposures: Astronomik Filters
- H-Alpha (5nm): 77 x 10 min = 770 min - Total Exposure: 12h 50m
- File Name: Gum15-CDK21Ha-C01w.jpg
- Field of View: 38.9' x 58.3' at 0.64 arc-sec/pixel
- Original Image Size: 3630 x 4540 pixels (16.5 MP); 12.1" x 15.1" @ 300 dpi
- Data Acquisition: David Churchill
- Image Processing: Fred Espenak
- Maxim DL: Image Calibration, Stacking, Log Stretch
- Adobe Camera Raw: Noise Reduction
- Photoshop CC: Curves, Levels
- Topaz Labs: Sharpen AI - Copyright: Fred Espenak