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ISS reaches out and touches Mars, transit September 14, 2020 | by tglenn174
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ISS reaches out and touches Mars, transit September 14, 2020

APOD-September 23, 2020

apod.nasa.gov/apod/ap200923.html

 

The International Space Station (ISS) transits Mars in this image. This is a single frame exposure of 0.35ms, extracted from a video showing a longer transit sequence (full transit sequence linked below).

 

www.flickr.com/gp/140032790@N06/48L18K

 

Details on both the ISS and Mars are visible, despite the short exposure, including Syrtis Major on Mars. The orbital trajectory was calculated by Calsky.com, and the transit was only visible along a 90m wide corridor along the ground, leaving a margin of error of about 45m on each side of the centerline. The angular velocity of the ISS was 2766"/s, and the actual ground velocity was 7.4km/s. The image was captured northeast of San Diego, CA, at 05:15:47 local time (PDT) on Monday, September 14, 2020, and more information and data is available in the following video linked below:

 

youtu.be/oHcMvF-nP2s

 

Equipment used:

C9.25 Edge HD telescope

ASI183mm camera (no filter)

Focal length: 2350mm

Exposure: 0.35ms

Gain: 300 (66%)

ROI: 5496x1500 pixels

Frame rate recorded: 41 fps

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Uploaded on September 16, 2020