Celestial hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  IC 4601  ·  IC 4603  ·  IC 4604  ·  IC 4605  ·  M 4  ·  NGC 6121  ·  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  ·  The star ψOph  ·  The star ωOph  ·  rho Oph nebula
Rho Ophiuchus and Antares Region 2017-06-21, 26, 27, 28, Antonio.Spinoza
Rho Ophiuchus and Antares Region 2017-06-21, 26, 27, 28
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Rho Ophiuchus and Antares Region 2017-06-21, 26, 27, 28

Rho Ophiuchus and Antares Region 2017-06-21, 26, 27, 28, Antonio.Spinoza
Rho Ophiuchus and Antares Region 2017-06-21, 26, 27, 28
Powered byPixInsight

Rho Ophiuchus and Antares Region 2017-06-21, 26, 27, 28

Equipment

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Acquisition details

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Description

This interesting and colorful region of the sky may be one of the closest star-forming regions in the Milky Way galaxy. With estimated distances for the major bright stars and dark and colorful gas clouds between ~300 and 600 light years, the region here sits between the constellations of Scorpius and Ophiuchus.

https://en.wikipedia.org/wiki/Antares

phiuchi">https://en.wikipedia.org/wiki/Rhphiuchi

phiuchi_cloud_complex">https://en.wikipedia.org/wiki/Rhphiuchi_cloud_complex

I wanted to get a wider view of this region than I had with the Canon lens set at 135mm (http://www.astrobin.com/299953/) without doing a mosaic, so this was shot at ~90mm, f/2.8.

This lens and camera combination produces a lot of distortion at the edges of the frame as well as bloating of the blue channel.

One night of data was not enough for this and more color and luminance were needed, so two more nights of data plus another hour or so a third night were added - but only about 3 hours per night was possible due to the low passage across the sky and trees.

Red and Ha were blended for the Red, Blue and 30% Ha were blended for blue and Luminance and Ha were blended for luminosity.

Comments

Revisions

  • Rho Ophiuchus and Antares Region 2017-06-21, 26, 27, 28, Antonio.Spinoza
    Original
  • Rho Ophiuchus and Antares Region 2017-06-21, 26, 27, 28, Antonio.Spinoza
    B
  • Rho Ophiuchus and Antares Region 2017-06-21, 26, 27, 28, Antonio.Spinoza
    C
  • Rho Ophiuchus and Antares Region 2017-06-21, 26, 27, 28, Antonio.Spinoza
    D
  • Final
    Rho Ophiuchus and Antares Region 2017-06-21, 26, 27, 28, Antonio.Spinoza
    E

Sky plot

Sky plot

Histogram

Rho Ophiuchus and Antares Region 2017-06-21, 26, 27, 28, Antonio.Spinoza