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Sh2-206 • NGC 1491 • Fossil Footprint Nebula in HOO, 


            Douglas J Struble

Sh2-206 • NGC 1491 • Fossil Footprint Nebula in HOO

Technical card

Dates:Oct. 18, 2019Nov. 5, 2019

Astrodon Ha 5nm: 445x120" (gain: 200.00) -20C bin 1x1
Astrodon OIII 3nm: 244x120" (gain: 200.00) -20C bin 1x1

Integration: 23.0 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 13.72 days

Avg. Moon phase: 70.16%

Bortle Dark-Sky Scale: 8.00

Basic astrometry details job: 3251415

Resolution: 3731x2980

Locations: Backyard White Zone Observatory, Taylor, MI, Michigan, United States

Data source: Backyard


NGC 1491 (also designated Sharpless SH2-206) is a bright emission nebula and HII region, located on the edge of a vast cloud region of neutral gas, about 10,700 light-years away in the Perseus arm of our Milky Way galaxy. The stellar wind from the O5V 11.2 magnitude star (BD +50 886) at its centre is forming a blister in the gas clouds immediately surrounding it while also eroding the gas clouds.



Douglas J Struble
License: None (All rights reserved)


Sh2-206 • NGC 1491 • Fossil Footprint Nebula in HOO, 


            Douglas J Struble

In these public groups

Sharpless2 Objects