Observations 29 May 2010
--------------------------------
Cosatrak 1 (Computerised satellite Tracking System).
Camera mount now carries two systems that can be operated
together as two totally different sytems and computers used.
Meade DSI Pro II Monochrome CCD camera without filters.
using integration times of 5 sec min to 25 seconds maximum
depending on brightness of sky in particular area.No image
processing done, but some done automatically in the auto reduction
software.
Used with 4 inch SKYWATCHER refractor- model 1025 - fitted with home
made focal reducer to give an f/2.56 system. Image scale is 6.56 arc
sec/pixel and field of view 84.8 x 63.2 arc minutes. Shows 15th
magnitude stars in real time with reasonably good conditions.
Exposure time to nearest second inserted into image FITS header
from PC clock which is automatically checked every minute against
GPS signal.
Site 0433 : Longitude 18.51294 deg East, Latitude -33.94058 deg,
Elevation 10 metres-situated in Pinelands (Cape Town),South Africa
FOR CLASSFD.TLE:
--------------------------
90059 06 675A 0433 P 20100529202226000 16 15 1133090+294329 58
90059 06 675A 0433 P 20100529202331000 16 15 1134374+294703 48
90059 06 675A 0433 P 20100529202620000 16 15 1138229+295618 38
90059 06 675A 0433 P 20100529202652000 16 15 1139044+295758 28
90059 06 675A 0433 P 20100529202753000 16 15 1140238+300112 18
90059 06 675A 0433 P 20100529203128000 16 15 1144561+301207 48
90059 06 675A 0433 P 20100529203157000 16 15 1145323+301333 38
90059 06 675A 0433 P 20100529203501000 16 15 1149151+302219 28
90059 06 675A 0433 P 20100529203606000 16 15 1150336+302518 28
90059 06 675A 0433 P 20100529203652000 16 15 1151243+302729 28
90059 06 675A 0433 P 20100529203725000 16 15 1152037+302900 38
90059 06 675A 0433 P 20100529203755000 16 15 1152399+303021 28
90059 06 675A 0433 P 20100529203824000 16 15 1153126+303140 38
90059 06 675A 0433 P 20100529204215000 16 15 1157356+304147 28
90059 06 675A 0433 P 20100529204327000 16 15 1158536+304446 18
90059 06 675A 0433 P 20100529204358000 16 15 1159274+304605 38
90059 06 675A 0433 P 20100529204427000 16 15 1159589+304715 18
90059 06 675A 0433 P 20100529204543000 16 15 1201214+305025 28
90059 06 675A 0433 P 20100529204614000 16 15 1201549+305139 28
90059 06 675A 0433 P 20100529204656000 16 15 1202391+305322 28
90059 06 675A 0433 P 20100529204731000 16 15 1203168+305442 57
90059 06 675A 0433 P 20100529204759000 16 15 1203465+305551 77
90059 06 675A 0433 P 20100529204828000 16 15 1204172+305701 87
90059 06 675A 0433 P 20100529204857000 16 15 1204472+305807 77
90059 06 675A 0433 P 20100529204927000 16 15 1205175+305918 18
90059 06 675A 0433 P 20100529205042000 16 15 1206351+310212 28
90059 06 675A 0433 P 20100529205301000 16 15 1208578+310724 38
90059 06 675A 0433 P 20100529205410000 56 15 1210069+310947 39
90059 06 675A 0433 P 20100529205600000 56 15 1211559+311329 39
90059 06 675A 0433 P 20100529205926000 56 15 1215167+312029 39
90059 06 675A 0433 P 20100529210049000 56 15 1216332+312349 39
Notes:
--------
(1) After being lost for about three and a half years 90059 has
been found again. Credit for this belongs to Peter Wakelin
who observed it as an unknown, Ted who found it could possibly
be 90059 and Mike who generated several search orbits which
enabled me to find it. Actually pretty easy as Mikes search
orbits were clustered close together so I chose the point to
watch were the spread between the orbits was minimal and, at
the range chosen they all happened to be predicted to pass
through my field of view with seperations of only a few
minutes.Also happened to be culmination point.
(2) The satellite is variable, ranging from about mag +11 to +13
being mostly on the "bright side" for most of the variation
cycle of possibly a minute or two. The range increased from
about 25000 to 30000 kms during the 3/4 hours I tracked it.
(3) Observing conditions were very poor due to the very low
elevation of the pass- about 17 degrees- and the fact that I
was looking into a bright city lit sky and the observation
just cleared a neighbours roof.
(4) More observations of other satellites to follow - 90085 is
running about 6 minutes early.
Cheers
Greg
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This archive was generated by hypermail 2b29 : Sun May 30 2010 - 09:13:40 UTC