Observation by David Basey: Mars 21/09/20

Uploaded by

David Basey

Observer

David Basey

Observed

2020 Sep 21 - 00:35

Uploaded

2020 Sep 21 - 18:34

Objects

Mars

Equipment

358mm Dobsonian
Altair 178M3 camera
W25 red filter
W58 green filter
W47 blue/violet filter

Location

Norfolk

Target name

Mars

Title

Mars 21/09/20

About this image

This is the result of a personal 'luminance' experiment. The usual approach is to use either a red or IR image as a luminance channel. This certainly enhances the surface detail but can suppress any clouds that are largely visible in blue light. These have been fairly scarce this apparition so it is not a major issue thus far.

This afternoon while reading the Registax manual (!) I discovered the 'Colour Mixing' option. This allows construction of a luminance channel from all three RGB images balancing the contribution of each. In this way it is possible to retain more of the blue image's contribution.

The result seems quite pleasing.

Files associated with this observation

2020-09-21-0135UT-DRB.jpg (88.8 kB)

Like this image

Peter Carson, Mr John William Hughes, Mike Harlow, Chris Dole, Martin Lewis, Bill Leatherbarrow, Peter Mulligan, Mr Simon Francis Dawes, Jeremy Shears, Mark Phillips, Paul G. Abel, Geof Lewis, Mike Greenhill-Hooper, Martina McGovern, Mattia Piccoli

Comments

Mr Simon Francis Dawes, 2020 Sep 22 - 16:56 UTC

This is such an awesome image!

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