Home Index page Previous image Next image
Click to view the full size image:
2000 x 1509, 776 KB
Sh2-308 Gourd / Dolphin Nebula

Classification: Emission Nebula Sh2-308, RCW 11, LBN 1052
Constellation: Canis Major (CMA)
Object Location: Ra 06h 55m Dec-23°13 {current)
Size & Distance: 35.0 x 35.0 Apx 4530 light years.

Date & Location: 01-24-2020 Little Blair Valley, CA
Exposure: Ha03,135,150, Ha 9x15, 03 10x15 (bin 1x1) Ha-03 combined for green channel.
Optics: Telescope Engineering Company APO110FL w/ TEC FF @ f/5.74, 631mm using the Optec FocusLynx.
Mount: Astro-Physics 1200 GTOCP4 / ATS 10x36 pier.
Camera: FLI-PL16803 @-25c / FLI CFW5-7 / Guided by SBIG ST-I / w OAG.
Filters: Astrodon 50mm square, 3nm Ha, 0lll
Software: MaxImDL 6.11, Photoshop CC, CCDStack, Topaz Studio.

Notes: Sky conditions: Average seeing, Temp range 45-30°
Image Field of view is 200x149 arcmin. Image Scale 2.94 arcsec/pix

Sh2-308 is an emission nebula and HII region located near the center of the Canis Major.The nebula is bubble-like, surrounding a Wolf–Rayet star EZ Canis Majoris. This star is in the brief, pre-supernova phase. Sh2-308 sometimes goes by the name Gourd Nebula and sometimes by the Dolphin nebula. Sh2-303 and Sh2-310 also in the field.