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Aristarchus and Copernicus, Playing with Colour


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I made 2 longer SER files of the Aristarchus and Copernicus region of the moon yesterday (2000 frames each) stacked, and stitched the stacked result (500 frames each) in MS-ICE. After sharpening the L-band in ImPPG, and playing with curves in GIMPI got the following shot:

Moon_233842_lapl4_ap1419_stitchLR_2RSc.thumb.jpg.2229e9af3f15106bc4e8b204bd2627d3.jpg

 

I then did a more selective manipulation of saturation, by boosting the B band only in LAB space in GIMP. This gives  neat "silver and blue" appearance:

Moon_233842_lapl4_ap1419_stitchLR_2RScBboost1c2.thumb.jpg.5ce6686c9a63bb9da74143f3611833c4.jpg

 

Boosting the A band as well, gives a more "gold and blue" appearance:

Moon_233842_lapl4_ap1419_stitchLR_2RScABboost2c2.thumb.jpg.477e0d5d54118318b43399dafa5895ec.jpg

Stretching the A and B bands in LAB colour space can simply be done by applying curves to the appropriate layer after decomposing the RGB image into LAB layers.

I do think I should have used my atmospheric dispersion corrector into the optical train, as a slight shift is visible. Will have a go in Registax to correct that later.

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