Celestial hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  12 c01 Sco  ·  13 c02 Sco  ·  19 omi Sco  ·  20 sig Sco  ·  21 alf Sco  ·  22 i Sco  ·  23 tau Sco  ·  5 rho Oph  ·  9 ome Oph  ·  Alniyat  ·  Antares  ·  B229  ·  B42  ·  B44  ·  IC 4596  ·  IC 4603  ·  IC 4604  ·  IC 4605  ·  M 4  ·  M 80  ·  NGC 6093  ·  NGC 6121  ·  NGC 6144  ·  PK346+14.1  ·  Part of the constellation Scorpius (Sco)  ·  Scorpius  ·  The star 12Sco  ·  The star 13Sco  ·  The star 22Sco  ·  The star Al Niyat (σSco)  ·  And 7 more.
Antares and Rho Ophiuchi Region, Eshan Toorabally
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Antares and Rho Ophiuchi Region

Antares and Rho Ophiuchi Region, Eshan Toorabally
Powered byPixInsight

Antares and Rho Ophiuchi Region

Equipment

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Acquisition details

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Description

Update: Major reprocess in May 2019 - used APP and quality ranked subs. Also added some data from my WO Z73 to the overall image. Not sure which version is better!

Acquired from Mauritius in Southern Hemisphere with no light pollution filter. This part of the sky has been a target of mine for a long time so I was glad to grab some shots during my 10 day trip to Mauritius, where Antares was high in the sky.

First light for the Samyang lens and exposures, guiding and dithering driven by the Lacerta MGen. Only slight regret is my camera is not modified so I did not capture much of the hydrogen alpha in and around Antares...next time!

Stacked in Deep Sky Stacker, most of the processing done in PixInsight with very small finishing touches in Lightroom.

Trickiest part of processing was which mask to use as some of the best parts of the image are dark dust lanes. In the end an inverted PixelMath mask taking the max of a star mask and mask from the dark structure enhance script gave me the best results!

Comments

Revisions

  • Antares and Rho Ophiuchi Region, Eshan Toorabally
    Original
  • Antares and Rho Ophiuchi Region, Eshan Toorabally
    B
  • Final
    Antares and Rho Ophiuchi Region, Eshan Toorabally
    C

B

Description: Major reprocess - now stacked using APP and quality ranked subs. Also includes some subs which had a different field of view. Not sure which one is better!

Uploaded: ...

C

Description: Not sure what happened with the previous revision - I think my monitor was not calibrated properly. Hopefully this version is less garish, but retaining all the benefits of improved pre-processing!

Uploaded: ...

Sky plot

Sky plot

Histogram

Antares and Rho Ophiuchi Region, Eshan Toorabally