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Mercury on 14th February 2019

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About this observation
Observer
Chris Hooker
Time of observation
14/02/2019 - 15:00
Object
Mercury
Observing location
Didcot, Oxfordshire
Equipment
254 mm F/6.3 Newtonian
TeleVue 3x Barlow lens
Baader 610 nm & IR-cut filters
ZWO ASI120MM-S camera
Exposure
0.96 msec, focal ratio F/19
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Mercury imaged in relatively good seeing, despite its altitude being only 23 degrees, thanks to a minimal jet-stream and (probably) the heating in nearby houses not operating in mid-afternoon. A total of 110,000 video frames was captured, and a final selection of just over 1100 used for the final image. This corresponds to 1% of the captured frames, which is a high proportion for Mercury. The image is rather more contrasty than a softened Messenger image, but the main features are in agreement with the spacecraft data.

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