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Sh2-88 in Constellation Vulpecula in SHO, 


            Douglas J Struble
Sh2-88 in Constellation Vulpecula in SHO

Sh2-88 in Constellation Vulpecula in SHO

Technical card

Resolution: 3982x3183

Dates:Aug. 2, 2019Aug. 3, 2019Aug. 6, 2019

Astrodon Ha 5nm: 209x120" (gain: 200.00) -20C bin 1x1
Astrodon OIII 3nm: 500x120" (gain: 200.00) -20C bin 1x1
Astrodon SII 3nm: 178x120" (gain: 200.00) -20C bin 1x1

Integration: 29.6 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 3.48 days

Avg. Moon phase: 15.88%

Bortle Dark-Sky Scale: 7.00 job: 2857543

RA center: 296.434 degrees

DEC center: 25.338 degrees

Pixel scale: 0.648 arcsec/pixel

Orientation: 135.175 degrees

Field radius: 0.459 degrees

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

Data source: Backyard


This is a pretty rare object on Astrobin and no one has attempted it in SHO, so I thought I'd give it a shot. OIII was extremely faint. 16.6 hours of the total integration time was on OIII alone and even then I had to layer some more back in after my original SHO combine.

Sharpless 2-88 or Sh 2-88 is a region of diffuse nebulae northwest of the nebula knots Sh 2-88A, Sh 2-88B1, and Sh 2-88B2, which are all associated with Vulpecula OB1. This nebula is a HII type diffuse nebula excited by the type O8 star BD +26°3952. Both neutral and ionized gases in Sh 2-88 are between 150 and 410 solar masses and the dust mass is about 2 to 9 solar masses. The nebula is ionized by an O8.5 to 9.5V star. The structure been interacting with a HI interstellar bubble shaped by the stellar winds of BD +26°3952 and the blue O8.5II(f) star BD +25°3866. Overall, its actual structure is located 2.4 kiloparsecs away, at 23 × 15 parsecs in radius. It has a dynamical age of 1.5 million years, and a mass of 1,300 solar masses. It has an rms electron density of 9 cm–3. All separate star forming regions are 1 arcminute in diameter.



Douglas J Struble
License: None (All rights reserved)

Sky plot

Sky plot


Sh2-88 in Constellation Vulpecula in SHO, 


            Douglas J Struble