Optical 30 April 2015

Observations 30 April 2015
------------------------------------------

Cosatrak 1 (Computerised satellite Tracking System).

FLI ML8300M CCD camera with mechanical shutter + Trimble GPS

Used with 55mm focal length f/1.8 lens.
Field of view 18.5 x 13.9 degrees.
Images processed and measured manually.

Site 0433 : Longitude 18.51294 deg East, Latitude -33.94058 deg,
Elevation 10 metres-situated in Pinelands (Cape Town),South Africa


FOR CLASSIFIED.TLE:
----------------------------
23533 95 015A   0433 F 20150430175943264 56 15 0316166-434218 39
23533 95 015A   0433 F 20150430180052070 56 15 0400179-310331 39
23533 95 015A   0433 F 20150430180210045 56 15 0433297-153326 39
23533 95 015A   0433 F 20150430180249068 56 15 0445163-080648 39
25746 99 028C   0433 F 20150430182426357 56 15 0947582+392656 39
25746 99 028C   0433 F 20150430182825910 56 15 1022118+270133 39
25746 99 028C   0433 F 20150430182920884 56 15 1030372+233903 39
25746 99 028C   0433 F 20150430183004899 56 15 1037279+204729 39
26906 01 040B   0433 F 20150430190833400 56 15 0515587-251540 39
26906 01 040B   0433 F 20150430190917931 56 15 0543406-200707 39
26906 01 040B   0433 F 20150430191008018 56 15 0615399-125023 39
28095 03 054A   0433 F 20150430172531824 56 15 0532349+093338 39
28095 03 054A   0433 F 20150430172605852 56 15 0550184+151830 39
28095 03 054A   0433 F 20150430172704580 56 15 0619031+243108 39
28637 05 011B   0433 F 20150430171826182 56 15 1317070-213147 39
28637 05 011B   0433 F 20150430171912927 56 15 1244084-091854 39
28637 05 011B   0433 F 20150430172044339 56 15 1153029+134022 39
28637 05 011B   0433 F 20150430172130620 56 15 1132428+230412 39
28647 05 016B   0433 F 20150430173105326 56 15 0636235+070419 39
28647 05 016B   0433 F 20150430173247915 56 15 0750411-330218 39
28647 05 016B   0433 F 20150430173506044 56 15 1452332-660612 39
29522 06 050A   0433 F 20150430181419568 56 15 0417274-453011 39
29522 06 050A   0433 F 20150430181504064 56 15 0448340-351500 39
29522 06 050A   0433 F 20150430181610921 56 15 0520237-184226 39
29522 06 050A   0433 F 20150430181649927 56 15 0533038-093137 39
35938 09 052B   0433 F 20150430184235597 56 15 1023427+375344 39
35938 09 052B   0433 F 20150430184257879 56 15 1031595+360855 39
35938 09 052B   0433 F 20150430184320145 56 15 1040323+341706 39
35938 09 052B   0433 F 20150430184347994 56 15 1051364+314402 39
39462 13 072A   0433 F 20150430174940188 56 15 1440012-465428 39
39462 13 072A   0433 F 20150430175036166 56 15 1450516-603825 39
39462 13 072A   0433 F 20150430175135447 56 15 1529392-745428 39
39630 14 015A   0433 F 20150430183449775 56 15 0429238-502722 39
39630 14 015A   0433 F 20150430183600737 56 15 0523158-333414 39
39630 14 015A   0433 F 20150430183711242 56 15 0554389-151036 39
39630 14 015A   0433 F 20150430183811669 56 15 0611248-011348 39

STRAYS SEEN:
---------------------
10856 78 044B   0433 F 20150430173105326 56 15 0636292-002133 39
15945 85 069B   0433 F 20150430175716940 56 15 0346200-424045 39
28479 04 046A   0433 F 20150430181229895 56 15 0316349-531507 39
39210 13 037C   0433 F 20150430181014712 56 15 0323196-551459 39
37828 11 054C   0433 F 20150430175716940 56 15 0353315-325806 39

NOTES:
--------------

(1) Testing out a 55mm focal length f/1.8 lens from an old
     MINOLTA camera for use as a wide angle system for leo
     satellites. However full moon is not the best time to test
     any optical system so need a "dark of moon" session-
     probably will only use it when looking for misplaced
     brightish objects. The f/1.8 is actually too fast for my
     light polluted skies and I am limited to exposures of about
     4 seconds max when using 2 bin on the CCD camera in bright
     moonlight.  The field of view is 18.5 x 13.9 degrees and
     a 4 second exposure at 2 BIN gives a star magnitude of about
     magnitude 11 which translates roughly to about magnitude +7
     to mag +8 for a leo satellite with camera in non-tracking mode.
     Hopefully  with no full moon I should be able at get at least
     a magnitude or two fainter.

Cheers
Greg

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