Celestial hemisphere:  Southern  ·  Constellation: Vela (Vel)  ·  Contains:  IC 2391  ·  NGC 2547
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Section of Gum Nebula in Ha with Canon 135/f2 lens and EF Focus controller, Freestar8n
Section of Gum Nebula in Ha with Canon 135/f2 lens and EF Focus controller
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Section of Gum Nebula in Ha with Canon 135/f2 lens and EF Focus controller

Getting plate-solving status, please wait...
Section of Gum Nebula in Ha with Canon 135/f2 lens and EF Focus controller, Freestar8n
Section of Gum Nebula in Ha with Canon 135/f2 lens and EF Focus controller
Powered byPixInsight

Section of Gum Nebula in Ha with Canon 135/f2 lens and EF Focus controller

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Description

This is another test of the Canon EF focuser with 135mm f/2 lens. This shows a section of the Gum nebula including HH46-47 that I imaged recently here:

https://astrob.in/398821/0/

This image isn't as sharp as my other test image of Eta Carinae from the same night, and I think it is because there is some backlash and slop in the lens drive itself. I expect that automatic focus should take care of it.

This is slightly cropped but no processing other than levels and gradient removal.

29x1m exposures at f/2 with Custom Scientific 10nm Ha filter. Guidescope guided with MetaGuide and dithering.

HH46-47 is located in the two dark fingers of nebulosity just above and left of center.

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Section of Gum Nebula in Ha with Canon 135/f2 lens and EF Focus controller, Freestar8n