Hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  IC 4603  ·  IC 4604  ·  IC 4605  ·  M 4  ·  M 80  ·  NGC 6093  ·  NGC 6121  ·  NGC 6144  ·  Part of the constellation Scorpius (Sco)  ·  The star 12Sco  ·  The star 13Sco  ·  The star 22Sco  ·  The star Al Niyat (σSco)  ·  The star Antares (αSco)  ·  The star οSco  ·  The star ρOph  ·  The star τSco  ·  rho Oph nebula
Getting plate-solving status, please wait...
Rho Ophiuchi, 



    
        

            Eric Cauble
Rho Ophiuchi
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Rho Ophiuchi

Getting plate-solving status, please wait...
Rho Ophiuchi, 



    
        

            Eric Cauble
Rho Ophiuchi
Powered byPixInsight

Rho Ophiuchi

Equipment

Imaging Telescopes Or Lenses
Samyang 135mm f/2 ED
Imaging Cameras
QHYCCD QHY168C
Mounts
iOptron CEM25P
Filters
Optolong UV/IR Cut
Software
SGP · PHD2 · PixInsight
Guiding Telescopes Or Lenses
ZWO 30F4 Guidescope
Guiding Cameras
ZWO ASI120MM

Acquisition details

Dates:
March 7, 2019
Frames:
Optolong UV/IR Cut: 33×120(1h 6′) (gain: 9.00) -20°C bin 1×1
Integration:
1h 6′
Darks:
10
Flats:
12
Bias:
15
Avg. Moon age:
0.76 days
Avg. Moon phase:
0.64%
Bortle Dark-Sky Scale:
4.00
Temperature:
1.11

Basic astrometry details

Astrometry.net job: 2575025

RA center: 16h30m45s.1

DEC center: -25°1749

Pixel scale: 7.577 arcsec/pixel

Orientation: 19.918 degrees

Field radius: 6.164 degrees

Resolution: 1824x1203

File size: 2.1 MB

Locations: Sadlers Creek State Park, Anderson, South Carolina, United States

Data source: Traveller

Description

My first successful attempt at Rho Ophiuchi. I've tried several times and have either been foiled by clouds or equipment issues. I took 52 subs but had to reject 19 because of clouds. Hopefully I can add a few more hours integration. Rho Oph is tied with the Witchhead for my favorite reflection nebula.

Comments

Sky plot

Sky plot

Histogram

Rho Ophiuchi, 



    
        

            Eric Cauble