| 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
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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.
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