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Contains:  NGC 1491, NGC 1496
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Sh2-205 & Sh2-206 Emission Nebulas in SHO, 


            Douglas J Struble
Sh2-205 & Sh2-206 Emission Nebulas in SHO
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Sh2-205 & Sh2-206 Emission Nebulas in SHO

Technical card

Dates:Nov. 5, 2019Nov. 15, 2019Nov. 20, 2019

Astrodon OIII 3nm: 370x120" (gain: 200.00) -20C bin 1x1
Astronomik Ha 6nm 1.25'': 630x120" (gain: 200.00) -20C bin 1x1
Astronomik SII 1.25" 6nm: 355x120" (gain: 200.00) -20C bin 1x1

Integration: 45.2 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 16.26 days

Avg. Moon phase: 64.71%

Bortle Dark-Sky Scale: 7.00

Basic astrometry details job: 3256650

RA center: 3h 59' 57"

DEC center: +51° 55' 58"

Pixel scale: 2.320 arcsec/pixel

Orientation: 318.449 degrees

Field radius: 1.783 degrees

Resolution: 4380x3384

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

Data source: Backyard


Recently I captured Sh2-206 (NGC 1491) with my 152mm refractor. I wanted to get my wider field Stellarvue SV70T out to capture both Sh2-205 and Sh2-206 together. Sh2-205 (to the right) is so incredibly faint. I had to really pile on the integration time.

Sh2-205 is a large nebula on the border of the constellations Camelopardalis and Perseus at an estimated distance of approximately 3,200 light-years. Sh2-205 is commonly referred to as the Peanut Nebula. The nebula is classified as a HII region and is divided into 3 sections identified as SH 149.25-0.0, SH 148.83-0.67, and LBN 148.11-0.45. HII regions are typically the site of active star formation.

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)

Sky plot

Sky plot


Sh2-205 & Sh2-206 Emission Nebulas in SHO, 


            Douglas J Struble

In these public groups

Sharpless2 Objects