Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  11 Sgr  ·  4 Sgr  ·  63 Oph  ·  7 Sgr  ·  9 Sgr  ·  B296  ·  B302  ·  B303  ·  B88  ·  B89  ·  B91  ·  HD161984  ·  HD161992  ·  HD161993  ·  HD162012  ·  HD162030  ·  HD162040  ·  HD162041  ·  HD162042  ·  HD162065  ·  HD162081  ·  HD162098  ·  HD162099  ·  HD162100  ·  HD162119  ·  HD162141  ·  HD162167  ·  HD162184  ·  HD162218  ·  HD162219  ·  And 1040 more.
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The Sagittarius Triplet - HaLRGB version, Sendhil Chinnasamy
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The Sagittarius Triplet - HaLRGB version

Getting plate-solving status, please wait...
The Sagittarius Triplet - HaLRGB version, Sendhil Chinnasamy
Powered byPixInsight

The Sagittarius Triplet - HaLRGB version

Equipment

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Acquisition details

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Description

This is a follow-up to my previous image, rather posting as a revision, I felt I needed to post as a whole new image. After blinking through the subs, I realized I could bring down the exposure length as the core is too bright and thought of building masters for Mode1 Gain 0. 

After looking at QHYCCD website, I picked Mode 3 (Extended Fullwell 2CMSIT, whatever that means ) and shot LRGB with 5 min exposures and Gain 0. It is supposed to offer the same Fullwell and DR as Mode 2 (Extended Fullwell) but a reduced read noise. 5 minute subs looked good enough, I may stick to this mode for RGB after a few targets as a test. 

Ha was added with the old Mode 0 Gain 26 setting that I have been using all long. I made a blunder in collecting Ha, I only wanted 1 hour and few extra LRGB subs and I believe I may have sequenced it incorrectly. Ended up with 3h of Ha and one extra sub in LRGB 

Have to check into the sequence steps, but this got me thinking of doing a SHO version next and I have RGB stars already. 

Hope you like this result. Clear skies!

Comments

Revisions

  • The Sagittarius Triplet - HaLRGB version, Sendhil Chinnasamy
    Original
  • The Sagittarius Triplet - HaLRGB version, Sendhil Chinnasamy
    C
  • Final
    The Sagittarius Triplet - HaLRGB version, Sendhil Chinnasamy
    D

C

Description: Tweaked for colors

Uploaded: ...

D

Description: Pushed the colors so I could get some the blues around Trifid and NGC6559

Uploaded: ...

Sky plot

Sky plot

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The Sagittarius Triplet - HaLRGB version, Sendhil Chinnasamy