Hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  IC 4603  ·  IC 4604  ·  IC 4605  ·  M 4  ·  NGC 6121  ·  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 IC4604, 



    
        

            Mark Forteath
Rho Ophiuchi IC4604
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Rho Ophiuchi IC4604

Rho Ophiuchi IC4604, 



    
        

            Mark Forteath
Rho Ophiuchi IC4604
Powered byPixInsight

Rho Ophiuchi IC4604

Technical card

Imaging telescopes or lenses: William Optics Star 71 II

Imaging cameras: Nikon D750

Mounts: SkyWatcher EQ6R Pro

Guiding telescopes or lenses: William Optics 50mm Guidescope

Guiding cameras: ZWO ASI290MC

Software: PixInsight  ·  DeepSkyStacker (DSS) deepskystacker  ·  PHD 2  ·  APT  ·  Adobe Systems Inc. Photoshop CC 2019


Dates:June 17, 2020

Frames: 55x60" (55') ISO3200 bin 1x1

Integration: 55'

Darks: 60

Flats: 60

Bias: 400

Avg. Moon age: 25.94 days

Avg. Moon phase: 13.89%

Bortle Dark-Sky Scale: 4.00

Temperature: 6.00


Basic astrometry details

Astrometry.net job: 3678525

RA center: 16h30m41s

DEC center: -25°4706

Pixel scale: 3.544 arcsec/pixel

Orientation: 92.995 degrees

Field radius: 5.780 degrees


Resolution: 9793x6483

Locations: Home Observatory, Wynyard, Tasmania, Australia

Data source: Backyard

Description

This is a work in progress and will most likely be completed by a mosaic.

Borrowed APOD description:

The colorful clouds surrounding the star system Rho Ophiuchi compose one of the closest star forming regions. Rho Ophiuchi itself is a binary star system visible in the blue reflection nebula just to the left of the image center. The star system, located only 400 light years away, is distinguished by its multi-colored surroundings, which include a red emission nebula and numerous light and dark brown dust lanes. Near the lower right of the Rho Ophiuchi molecular cloud system is the yellow star Antares, while a distant but coincidentally-superposed globular cluster of stars, M4, is visible just above Antares.

Comments

Revisions

  • Rho Ophiuchi IC4604, 



    
        

            Mark Forteath
    Original
  • Final
    Rho Ophiuchi IC4604, 



    
        

            Mark Forteath
    B

Sky plot

Sky plot

Histogram

Rho Ophiuchi IC4604, 



    
        

            Mark Forteath