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

Uploaded by

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

Files associated with this observation

M_2020-11-26_Head to head.png (236.4 kB)

Like this image

Bill Leatherbarrow, Jeremy Shears, Mike Harlow, Peter Tickner, Chris Dole, Mr Michael Alan Frost, Ron Johnson, Manolo_Rodriguez, Mark Phillips

Comments

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, 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

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