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Hemisphere:  Southern  ·  Contains:  19 omi Sco, 20 sig Sco, 21 alf Sco, 22 i Sco, 5 rho Oph, Alniyat, Antares, B229, B42, IC 4603, IC 4604, IC 4605, IC4596, IC4603, M 4, M 80, M4, M80, NGC 6093, NGC 6121, NGC 6144, NGC6144, Sh2-9, The star 22Sco, The star Al Niyat (σSco), The star Antares (αSco), The star οSco, The star ρOph, rho Oph nebula
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Rho Ophiuchi Nebula (IC 4604), 


            Miles Zhou
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Rho Ophiuchi Nebula (IC 4604)

Imaging telescopes or lenses: Rokinon 135mm f/2

Imaging cameras: QSI 583ws

Mounts: Astro-Physics Mach1 GTO

Software: Adobe Lightroom CC  ·  PixInsight for Mac

Filters: Astrodon luminance filter  ·  Astrodon RGB  ·  Astrodon LRGB Gen2 E-Series Tru-Balance Filters

Dates:May 26, 2017May 27, 2017

Astrodon RGB: 43x300" -15C bin 1x1
Astrodon luminance filter: 24x300" -15C bin 1x1

Integration: 5.6 hours

Avg. Moon age: 1.38 days

Avg. Moon phase: 2.50% job: 1898284

RA center: 16h 26' 50"

DEC center: -24° 53' 25"

Pixel scale: 8.615 arcsec/pixel

Orientation: 0.033 degrees

Field radius: 4.351 degrees

Resolution: 2403x2728

Locations: Deep Sky West, Rowe, New Mexico, United States


IC 4604 is a large diffuse nebula of 5th magnitude located in the southwestern corner of the constellation Ophiuchus, surrounding the bright triple star Rho Ophiuchi. Several regions of bright and dark nebulosity surround this area. This is probably most colorful area in the sky. This is a simple LRGB combination.



Miles Zhou
License: None (All rights reserved)


  • Rho Ophiuchi Nebula (IC 4604), 


            Miles Zhou
  • Rho Ophiuchi Nebula (IC 4604), 


            Miles Zhou
  • Rho Ophiuchi Nebula (IC 4604), 


            Miles Zhou
  • Final
    Rho Ophiuchi Nebula (IC 4604), 


            Miles Zhou


Description: Cropping & Rotation

Sky plot

Sky plot


Rho Ophiuchi Nebula (IC 4604), 


            Miles Zhou

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