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Rare Sh2-207 & Sh2-208 in HaRGB, 


            Douglas J Struble
Rare Sh2-207 & Sh2-208 in HaRGB
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Rare Sh2-207 & Sh2-208 in HaRGB

Technical card

Dates:Dec. 23, 2019Jan. 20, 2020Jan. 21, 2020

Astrodon Blue Tru-Balance E-Series Gen 2: 60x60" (gain: 0.00) -20C bin 1x1
Astrodon Green Tru-Balance E-Series Gen 2: 60x60" (gain: 0.00) -20C bin 1x1
Astrodon Ha 5nm: 522x120" (gain: 200.00) -20C bin 1x1
Astrodon Red Tru-Balance E-Series Gen 2: 60x60" (gain: 0.00) -20C bin 1x1

Integration: 20.4 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 26.06 days

Avg. Moon phase: 13.38%

Bortle Dark-Sky Scale: 8.00

Basic astrometry details job: 3251091

RA center: 4h 19' 58"

DEC center: +53° 9' 36"

Pixel scale: 0.649 arcsec/pixel

Orientation: 50.998 degrees

Field radius: 0.497 degrees

Resolution: 4444x3260

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

Data source: Backyard


With these winter months in Michigan comes with little nights of clear skies in capturing data of rare objects that require a lot of integration time. Not only patience is in order, but a lot of hope.

Sh2-207 is the larger of the two sharpness objects and the smaller SH2-208 is just to the right. It also has some interesting structure in that it almost resembles a tiny Rossette Nebula. The nearby Sh2-208 to the right it is close enough that even a longer focal length telescope can pick both up in the same field of view as seen here with my 152mm APO. Sh2-207 responds well to the Ha filter, but not so much with OIII and SII. A wider field of view will also pick up some nice nebula in the area more so to the right of SH2-208. This area is quite dim so long exposure time works best, which I tried my best given these horrible winter months here in Michigan.



Douglas J Struble
License: None (All rights reserved)

Sky plot

Sky plot


Rare Sh2-207 & Sh2-208 in HaRGB, 


            Douglas J Struble

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Sharpless2 Objects