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Contains: 
Lunar Transit by the ISS 1-21-2016, 





    
        

            Michael Southam

Lunar Transit by the ISS 1-21-2016

Technical card

Resolution: 778x577

Date:Jan. 21, 2016

Time: 23:22

Frames: 6

FPS: 15.00000

Focal length: 2032

Locations: Home Observatory, Shelton, Connecticut, United States

Description

Thursday 2016-01-21 23:22:32.77 • Lunar transit

I decided to try for this at the last minute. Started setup about an hour early and was ready with about 10 minutes to go. Started capture about 15 seconds early but Backyard EOS took a few seconds to actually start the capture as it was frame sampling so I almost missed the moment. Sounds like a typical night trying to record a star occultation :) This transit was frames 65 through 71 of a 4000 frame video capture. I know I went a little long. At least I got it. Frame length was 1/100th so why did I only get 5 images in 1/2 of a second. Either my Canon or Backyard EOS is incapable of capturing faster that 15 frames a second. I suspect the former. It's designed as a still camera after all.

ISS angular size: 61.88″; distance: 446.53 km
Angular separation: 10.4′; azimuth: 213.3°; altitude: 63.4°
Center line distance: 1.40 km; visibility path width: 4.20 km
Transit duration: 0.46 s; transit chord length: 24.1′

R.A.: 06h 34m; Dec: +17° 59′; parallactic angle: -24.6°
ISS velocity: 52.3 ′/s (angular); 6.79 km/s (transverse)
ISS velocity: -2.92 km/s (radial); 7.39 km/s (total);
Direction of motion relative to zenith: 22.7°
Moon angular size: 31.8′; 30.9 times larger than the ISS
Moon phase: 95.7%; angular separation from Sun: 156.1°
Sun altitude: -66.8°; the ISS will be in shadow

Comments

Author

msoutham
Michael Southam
License: Attribution-NonCommercial-ShareAlike Creative Commons
6005
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Revisions

  • Lunar Transit by the ISS 1-21-2016, 





    
        

            Michael Southam
    Original
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            Michael Southam
    B
  • Lunar Transit by the ISS 1-21-2016, 





    
        

            Michael Southam
    C
  • Final
    Lunar Transit by the ISS 1-21-2016, 





    
        

            Michael Southam
    D

Histogram

Lunar Transit by the ISS 1-21-2016, 





    
        

            Michael Southam

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