Observations 20 Sept 2009
--------------------------------
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:
==================
33490 09 001A 0433 E 20090920171422500 16 15 2022519+031718 38 +079 00
33490 09 001A 0433 E 20090920171807000 16 15 2026367+031935 28 +077 00
33490 09 001A 0433 E 20090920172028000 16 15 2028569+032100 38 +083 01
35815 09 047A 0433 E 20090920181410000 57 15 2039259+052711 39 +102 01
35815 09 047A 0433 E 20090920201853000 57 15 2244347+052735 39
35815 09 047A 0433 E 20090920202252000 57 15 2248348+052736 39
Strays seen:
==================
THURAYA 2
27825 03 026A 0433 E 20090920171422500 16 15 2023152+031243 38 +110 01
27825 03 026A 0433 E 20090920172028000 16 15 2029208+031621 38 +108 02
INTELSAT 802
24846 97 031A 0433 E 20090920172838000 16 15 1947018+052654 28 +123 01
24846 97 031A 0433 E 20090920195513000 16 15 2213563+052528 18 +113 01
GALAXY 11
26038 99 071A 0433 E 20090920172838000 16 15 1946272+052731 28 +098 01
26038 99 071A 0433 E 20090920195513000 16 15 2213248+052722 18 +105 03
ASTRA 2C
26853 01 025A 0433 E 20090920174915000 16 15 2001110+052646 18 +124 01
26853 01 025A 0433 E 20090920175545000 16 15 2007419+052638 38 +125 02
E-BIRD
27948 03 043A 0433 E 20090920172838000 16 15 1947495+052457 28 +138 02
27948 03 043A 0433 E 20090920195513000 16 15 2214460+052416 18 +132 01
ARIANE 5 DEB (SYLDA)
29164 06 020C 0433 E 20090920173710000 16 15 2000169+052856 38 +100 05
29164 06 020C 0433 E 20090920173835000 16 15 2002594+051814 29 +110 07
29164 06 020C 0433 E 20090920174000000 16 15 2005411+050834 28 +097 01
AMC 14
32708 08 011A 0433 E 20090920173528000 16 15 2000320+045042 68 +127 03
32708 08 011A 0433 E 20090920173835000 16 15 2003312+043809 19 +123 05
Notes:
---------
(1) One of the measurements for PAN #35815 is obviously wrong in
declination. I repeated it (in APEX) and got the same as before so
the one reported now was done manually. APEX was unable to measure
the last two images due to very thick cirrus so this was also done
manually - extends the observed arc a little.
(2) Something screwball with object #29164 - the observed track angle
was slightly different to that predicted. However not important
as its a stray.Predicted time was okay.
(3) Because of thick cirrus from time to time some of the magnitudes
were probably affected.
(4) Apart from the cirrus conditions were good for my location-seeing
around 11 arc seconds as compared to normal 15 arc seconds. Will
try and observe tonight but long range weather prediction is not
good.
Cheers
Greg
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