Celestial hemisphere:  Southern  ·  Constellation: Chamaeleon (Cha)  ·  Contains:  HD89144  ·  NGC 3195  ·  PGC 226362  ·  PK296-20.1
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Caldwell 109 (NGC3195) - Planetary nebula in Chamaeleon, James Tickner
Caldwell 109 (NGC3195) - Planetary nebula in Chamaeleon, James Tickner

Caldwell 109 (NGC3195) - Planetary nebula in Chamaeleon

Getting plate-solving status, please wait...
Caldwell 109 (NGC3195) - Planetary nebula in Chamaeleon, James Tickner
Caldwell 109 (NGC3195) - Planetary nebula in Chamaeleon, James Tickner

Caldwell 109 (NGC3195) - Planetary nebula in Chamaeleon

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Description

The southernmost Caldwell object, C109 is a small but reasonably bright planetary nebula discovered by Sir John Herschel in 1835. I took advantage of a slightly hazy but very still night with a bright moon to target this object.

Given its small size (40 x 35") and the small aperture of my scope (4 inches) I had to deploy a few tricks I haven't tried before. First, a x2 drizzle was used to increase the image scale, and then Registax was used to apply wavelet-based image sharpening that I'd normally use for planetary imaging. I was pretty happy with the results, with the hydrogen emission showing some nice structures and shells.

HSO image with RGB stars.

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    Caldwell 109 (NGC3195) - Planetary nebula in Chamaeleon, James Tickner
    Original
  • Caldwell 109 (NGC3195) - Planetary nebula in Chamaeleon, James Tickner
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Title: C109 - zoom

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Caldwell 109 (NGC3195) - Planetary nebula in Chamaeleon, James Tickner

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80° South