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ISS and Crew Dragon, 11th July


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About this observation
Chris Hooker
Time of observation
11/07/2020 - 03:15
International Space Station
Observing location
Didcot, Oxfordshire
254 mm Newtonian
5x Powermate
ZWO ASI174MM camera
Baader IR-cut filter
0.6 msec @ F/24

The ISS imaged during an overhead pass, in poor seeing conditions. While focusing with the Bahtinov mask, I could see the middle line oscillating up and down between the two angled lines, indicating that the focus was changing due to the seeing. A few groups of frames were sharp enough to give a reasonable image: this is a stack of 30 frames from near the middle of the pass. 

The bright heat-rejection panels are mostly in shadow here: the left-hand group is shadowed by the main body of the station, and the shadow of one of the solar arrays is falling on the right-hand group. The SpaceX Crew Dragon module is the elongated bright object docked at the upper end of the main station body. 

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