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Contains:  IC 4605, NGC 6144, rho Oph nebula, IC 4604, IC 4603, M 4, NGC 6121, The star τSco, The star 22Sco, The star Antares (αSco), The star ρOph, The star Al Niyat (σSco), The star οSco, Part of the constellation Scorpius (Sco)
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Sco-Oph Cloud Complex, 


            Wei-Hao Wang
Sco-Oph Cloud Complex

Technical card

Imaging telescope or lens:Takahashi TOA 150

Imaging camera:Nikon D800 Mod

Mount:Takahashi EM-400 Temma2

Guiding telescope or lens:Vixen FL70S

Guiding camera:Fishcamp Starfish

Focal reducer:Takahashi TOA 645 Reducer F5.6

Software:DeepSkyStackerAuriga Imaging RegiStarAdobe Photoshop CS5


Resolution: 3000x4544

Dates:June 29, 2013

Frames: 72x300" ISO200

Integration: 6.0 hours

Avg. Moon age: 21.44 days

Avg. Moon phase: 57.53%

Bortle Dark-Sky Scale: 2.00 job: 184812

RA center: 246.774 degrees

DEC center: -25.535 degrees

Pixel scale: 5.412 arcsec/pixel

Orientation: -179.914 degrees

Field radius: 4.093 degrees

Locations: Yushan National Park (Taiwan), Tainan, Taiwan

Data source: Traveller


9-frame mosaic. Each frame contains 40 minutes of total exposure.

I don't quite like this one, as the flat-fielding here is quite bad and the depth is not good enough yet. Hope I will have time to do it again.



Wei-Hao Wang
License: None (All rights reserved)

Sky plot

Sky plot


Sco-Oph Cloud Complex, 


            Wei-Hao Wang