This image is dominated by 96 mile wide Ptolemaeus crater, 1.5 miles deep and peppered with many much smaller craters. Crater Alphonsus to the lower left has a central ridge casting a long shadow. Although similar in depth, the rim of Alphonsus casts a much longer shadow as it's closer to the terminator. | | Details: |  | | Night of: | Saturday February 1, 2020 | | Site: | Laguna Niguel | | Local Time: | 6:30 PM | Feb 1, 2020 | | Altitude: | 65° | | | Distance: | 249,855 miles | | Magnitude: | -9.94 mV | | Diameter: | 1783 arcsec | 29.71 arcmin | | Tilt: | +6.5° NP | | Phase Angle: | 93° | | Illumination: | 47.5% |
| | | Camera Settings: | | | Telescope: | 9.25-SCT | | Camera: | ZWO ASI224 +ADC + 2.5x | | f/ratio: | f/25+ | | Pixel Scale: | 0.155 arcsec | | Gain: | 195 | | Exposure: | 0.015 sec | | Video Length: | ? | | Frames: | | | Stacked: | 5000 | | Shot: | 10K video |
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