JWST drifting against the stars
Taken by Robert Forrest on January 27, 2022 @
Market Harborough, UK
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: Unavailable
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Details:
32cm DKT and QSI 683 camera binned x4. 60 exposures of 120s from Jan 27 23h53m to Jan 28 02h00m UT. They are 7.4' square with N up.
The relative closeness of JWST to us means that parallax caused by the diurnal rotation of the Earth gives a sinuous shape to its path against the stars. This can be seen when the images are combined into one, and in inverse shape in the star trails when they are stacked to align the positions of JWST. The orange overlay is not an astrometric plotting, the section of the path plot has been scaled without change of shape to fit the trail of JWST between its vertical dotted lines. High cloud drifted in for a period in the middle of the observations, making those images noisier.
Photographer's website:
No URL provided.
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