Moon...

Moon, 88% of full phase

Object: Moon
Constellation: Cancer
Distance: 367980 km (228652 miles)

Dates: 6th. March 2020
Equipment: ATIK 460EX with EFW2, Skywatcher f5.5 Esprit 100 ED refractor, Avalon Linear mount, guiding with Lodestar X2/PHD

Subframes: 100 x  H-alpha (0.001s), 100 x OIII (0.001s)

The H-alpha and OIII frames were stacked in Registax and wavelet sharpened. The histograms of each were carefully stretched to match each other, and then combined as HOO for RGB.  Unsurprisingly, the image is not particularly colourful: some images of the moon you see have lurid blues, greens and reds but such colours are largely artefacts.

I used the Ha and OIII filters largely as light rejection filters, as the moon is otherwise so bright it would overwhelm the sensitive CCD camera.  There was little visual difference in appearance between the Ha and OIII stacks.