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Observation by Martin Lewis: Mars 26th Nov. 2020 IR(sG)B vs RGB

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Martin Lewis

Observer

Martin Lewis

Observed

2020 Nov 26 - 20:02

Uploaded

2020 Nov 28 - 11:41

Objects

Mars

Equipment
  • 444mm Dobsonian
  • ASI224MC for colour
  • ASI174MM for IR and B
  • 642nm filter for IR
  • Astronomik B filter
Location

St Albans UK

Target name

Mars

Title

Mars 26th Nov. 2020 IR(sG)B vs RGB

About this image

Head-to-head processing comparison on Mars. One-shot colour on left & IR + synthetic Green + Blue composite on right. The IR(sG)B shows more cloud details & is much better when seeing poor but, when the seeing is good, & you are diffraction limited, the colour resolution wins out as the airy disc size is smaller due to the shorter wavelength.
Martin

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Comments
Mark Phillips
Mark Phillips, 2020 Dec 01 - 22:29 UTC

Have to say I've really enjoyed seeing your excellent work over this Mars season. Fantastically detailed images and something to aim for.

Martin Lewis
Martin Lewis, 2020 Dec 02 - 11:17 UTC

Thanks Mark - very kind of you to say so.

You can see all my Mars images from this apparition and previous ones plus loads more planetary stuff at www.skyinspector.co.uk
Cheers
Martin