Optical 15 January 2018 -NROL-47

From: Greg Roberts via Seesat-l <seesat-l_at_satobs.org>
Date: Mon, 15 Jan 2018 09:14:00 +0200
Observations 15 January 2018
----------------------------------------
Cosatrak 1 (Computerised satellite Tracking System).

Canon 650D DSLR camera - using Nikon 80-200mm telephoto lens
and set on 133.7mm and fixed f/ratio of F/2.8. Field of view
9.39 X 6.27 degrees with image scale 26 arc sec/pixel.
Image at ISO 3200.

Image processed and automatically reduced using APEX which provided
the middle position and magnitude.

The end points of the trail was determined by using SAO DS9 program
after image solved in Nova.astrometry.net.


FOR CLASSIFIED.TLE:
-----------------------
70004           0435 G 20180115004103080 16 15 1131275-051657 18
70004           0435 G 20180115004104080 16 15 1130483-050057 18 +044 00
70004           0435 G 20180115004105080 16 15 1130072-044503 18

NOTES:
----------
(1) Image obtained through brief gap in clouds which for once had the
     satellite in the field of view and close to shadow entry :-))
     (If not seen I would have violently cursed at 2.41am local time as
     I am not normally a morning observer!)

(2) Congrats are once again due to Cees Bassa and Scott Tilley for their
     excellent radio orbits. Ive called the satellite 70004 to match what
     Mike is currently using for the satellite identity.

Cheers
Greg

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Received on Mon Jan 15 2018 - 01:15:32 UTC

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