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This is the full-sized image of the NW libration zone photographed on 8th July 2018 when the libration was very favourable. Move your mouse over the picture to see the names of the various craters. The Sun was south of the lunar equator so its altitude in the large crater Rozhdestvenskiy was only about 4° which explains why it is not really visible. Similarly the colongitude is such that the sunset terminator is at about lunar longitude 29° west, so the Sun is high in the sky over the area near the terminator in the lower part of this picture. Hence the lighting is very flat and the craters in that area show up very badly. The 90° west meridian passes through Cremona and Bunsen C.
Libration: Latitude: +7° 40', longitude -7° 08'
Solar inclination: -0.5°
Lunar Phase: 248.3°
Colongitude: 209.1°
Date and Time: 8th July 2018 between 02:46 and 03:01 UT
Camera: DMK 21AF04 with IR-pass filter
Telescope: LX200 at prime focus
Capture: ICCapture, exposures between 1/120th and 1/183rd second, as appropriate, at gain 918
Processing: Registax5. Single-point alignment, ~300 frames stacked for each picture, wavelets 1-2 = 10.
Mosaic made from six pictures in iMerge and the gamma reduced to 0.8 twice in PhotoImpact.
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