Observations 12 Mar 2007:
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Cosatrak 1 (Computerised satellite Tracking System).
MINTRON low light level CCD surveillance camera (0.005 lux typical
in non integration mode) and 0.00005 lux in STARLIGHT mode with 128
frame integration.
Used with 150mm aperture f/5 reflector,integrating for 96 frames
which is equivalent to an exposure of 1.92 seconds per image.
Site 0433 : Longitude 18.51294 deg East, Latitude 33.94058 deg S,
Elevation 10 metres - situated in Pinelands (Cape Town), South Africa
For CLASSFD.TLE:
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90067 06 585A 0433 F 20070312175252200 56 15 0808050+183833 39 +120 05
90067 06 585A 0433 F 20070312175821300 56 15 0813280+182513 39 +120 05
90013 03 564A 0433 F 20070312202459900 56 15 1055060+092504 39 +075 05
27168 02 001A 0433 F 20070312202915600 56 15 0955400+063145 39 +090 05
"Old Unknown "
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91097 07 058GEO 0433 F 20070312183207900 56 15 1111540+040904 39 +105 05
91097 07 058GEO 0433 F 20070312183954200 56 15 1119290+034154 39 +105 05
Strays seen:
-----------------
07615 75 004A 0433 F 20070312190830700 56 15 0547430+160617 39 +080 05
15202 84 088D 0433 F 20070312191830400 56 15 0533100+050417 39 +075 05
New Unknowns seen:
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91099 07 071GEO 0433 F 20070312180750900 56 15 0722020+163038 39 +110 05
91099 07 071GEO 0433 F 20070312181455800 56 15 0729070+163635 39 +120 05
91100 07 071GEO 0433 F 20070312190232400 56 15 0542180+162942 39 +095 05
91100 07 071GEO 0433 F 20070312190758700 56 15 0547490+162100 39 +120 05
91100 07 071GEO 0433 F 20070312191114300 56 15 0551060+161523 39 +120 05
91100 07 071GEO 0433 F 20070312191505500 56 15 0554590+160853 39 +095 05
Notes:
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(1) #91097 steady and easy.
(2) #91099 variable, looks like it may be flashing
(3) #91100 variable - nice object. Every 40-41 seconds does a flash to
perhaps as bright as magnitude +8.5. Halfway through the 41 sec
cycle slowly brightens to about mag +12 for a while then down to
about mag +14 followed by a bright flash. Moving relatively fast
so a fast drifter. Probably a rocket casing.
(4) Did not see #90016 although reasonably certain I was looking at
correct place but by this time cirrus had gotten quite thick but I
should have seen it - wonder if it has moved again ?
(5) Still a lot of work to do before Im 100% happy with using the 6inch
reflector - a "finder" camera was added with a 2 degree field of
view and this makes it vey easy to determine where the 6 inch is
actually pointing, but I have still to develop a routine for better
efficiency in scanning for unknowns- I now have 5 monitors to watch!
( actually 4 since I dont need to watch the GPS time display computer
once the two clocks are set on GPS time).
Cheers
Greg
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