Observation by Simon Dawes: The Terminator at 1st Quarter

Uploaded by

Mr Simon Francis Dawes

Observer

Simon Dawes

Observed

2020 Mar 02 - 19:59

Uploaded

2020 Mar 04 - 22:15

Objects

The Moon

Equipment

Sky Watcher MN190
ZWO ASI1600 PRO
EQ6

Exposure

1500 of 3000 frames @8bit each frame was ~30ms

Location

Bexleyheath, Kent (S.E. London really), England

Target name

The Moon

Title

The Terminator at 1st Quarter

About this image

I hope you like the image, I love scrolling around the Moon looking at its features, I can spend hours lost in it - if you have a high res display it is worth zooming in past the 100% mark - at least on my monitor I find this reveals more features that are just too small at 100% on a high res 'retina' type display.

For this image I experimented with 1500 frames at 16bit depth (12 bit really) and 3000 frames at 8bit depth, keeping 50% of the frames in the stack in both cases, the 8bit depth video was quicker to take and stack (despite more frames) and gave better results, I guess the number of frames trumps bit depth in this case.

The original video was ~45GB in size this jpg image is ~232KB which when you think about it is an amazing compression ratio, the final Tiff with layers preserved is 118MB.

Sharpening was completed in photoshop using varying sizes of un-sharp masks (I have a macro so it only takes 30s to do :-) )

Files associated with this observation

The Moon 2020-03-02 1959 8bit 1500 of 3000 BAA.jpg (232.4 kB)

Like this image

Clive Nanson, Bill Leatherbarrow, Mr Leonard Entwisle, Ray Emery, Andy Wilson, Jeremy Shears, Andrew Dumbleton, Honor Wheeler, Mr Simon Francis Dawes

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