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Elephant's Trunk Nebula (HOO) (crop), 


Elephant's Trunk Nebula (HOO) (crop)

Elephant's Trunk Nebula (HOO) (crop)

Technical card

Resolution: 1209x1479

Astrodon 3nm H-Alpha Narrowband Filter - 1.25": 360x60" (gain: 139.00) -25C
Astrodon 3nm OIII Narrowband Filter - 1.25": 360x60" (gain: 139.00) -25C

Integration: 12.0 hours job: 2251219

RA center: 323.764 degrees

DEC center: 57.550 degrees

Pixel scale: 1.906 arcsec/pixel

Orientation: 262.168 degrees

Field radius: 0.506 degrees

Data source: Backyard


A crop showing the titular animal.

I was disappointed with this considering it represents 12 hours of data. I think the OIII was just too weak. Try as a I might I could not get the colors right. Also, to my dismay I actually lost some of the detail that was in the unprocessed HII stack. I'm at the limit of my PI skills. Time to try an easier target.

I think I finally used: HII, 0.8*OIII + 0.2*HII, 0.8*OIII + 0.2*HII



License: None (All rights reserved)

Sky plot

Sky plot


Elephant's Trunk Nebula (HOO) (crop),