Hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  IC 4603  ·  IC 4604  ·  IC 4605  ·  M 4  ·  NGC 6121  ·  NGC 6144  ·  Part of the constellation Scorpius (Sco)  ·  The star 22Sco  ·  The star Al Niyat (σSco)  ·  The star Antares (αSco)  ·  The star οSco  ·  The star ρOph  ·  The star τSco  ·  The star ωOph  ·  rho Oph nebula
Rho Ophiuchi, 


Rho Ophiuchi
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Rho Ophiuchi

Technical card

Imaging telescopes or lenses: Sigma 150-500mm F5-6.3 APO DG OS HSM

Imaging cameras: Nikon D600

Mounts: Meade LDX 55

Dates:April 22, 2015

Frames: 19x60" ISO3200

Integration: 0.3 hours

Darks: ~19

Avg. Moon age: 4.02 days

Avg. Moon phase: 17.21%

Basic astrometry details

Astrometry.net job: 616820

RA center: 16h 32' 4"

DEC center: -25° 1' 19"

Pixel scale: 7.897 arcsec/pixel

Orientation: 91.236 degrees

Field radius: 5.632 degrees

Resolution: 4274x2850


Widefield image of Rho Ophiuchi. I was hoping to get a lot more data for this image but due to an error with my intervalometer I missed out on over 1 hour of subs. I used my test shots to get this image so the session wasnt a total waste of time.


Sky plot

Sky plot


Rho Ophiuchi,