Gum 10. Wray 19-5. RCW 19

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Gum 10 is an often overlooked nebula. Being quite isolated in an otherwise quite dull region, Gum is part of a giant molecular cloud (with approximately about 200,000 solar masses) and related to the O7f III giant star HD 69464 (the bright blue star near the upper center. The red star in the lower center is HD 69511 and the yellow-orange star close to the upper right border is HD 69280.

This image was taken with narrowband filters (Halpha and OIII) and mapped to natural color.


Additional Information


Name(s): Gum 10. Wray 19-5. RCW 19

Type: Emission Nebula

RA:  08h 15m 44.4s

Dec: -35º 33’ 17.5”

Constellation: Puppis

Size (arcmin): 57×47 arcmin

Magnitude: NA

Distance: Not found


Date: 2020-03-13 to 2020-04-06

Location:, SSO near Coonabarabran, NSW Australia

Size (arcmin): 37×37 arcmin

Telescope: 20” f/6.8 Reflector

Camera: SBIG STX16803 (4096x4096pix)

Guiding: Astrodon MonsterMOAG off-axis guider

Total exposure: 25.5 hours (Ha: 19h; OIII: 5h; RGB: 1.5h)

Processing: CCDStack, Photoshop CC 2021

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