Optical 09 October 2020

Site 0435 Pinelands (Cape Town,South Africa)

18.5101 degrees east  33.9368 degrees south  height 25.5 metres

ZWO ASI 174MM cmos camera with telephoto lens set at about 80mm focal length
and aperture f/2.8. Field of view 7.74 by 4.86 degrees, 2x binning and
image scale 28.8 arcsec/pixel.

Timing provided by Dimension 4 and Network Time Synchronization (NTP) and
hopefully good to 0.1 seconds.

FITS images reduced in ALLSKY PLATE SOLVER  to provide plate solution and
used to determine coordinates from trails produced during exposures. This
is quicker than using NOVA.ASTROMETRY.NET and SAO DS9 for the astrometry

ASICAP used to produce FITS files.  So far appears to be the best program
for
capturing as best control over how image appears. However there MAY be a
problem with the capturing of the time in that the time of start of exposure
appears to actually be time of end of exposure(?)  so times will be in
error by
duration of exposure. I have corrected the observations below for this but
I
may be wrong in my logic so far. Another program used for FITS imaging
capturing
works okay so there may be something unusual about ASICAP's handling of
time.
Still under investigation....

FOR CLASSIFIED.TLE:
-------------------------------------
35938 09 052B   4353 G 20201009184533130 17 15 0008480-090451 85 S+055 10
35938 09 052B   4353 G 20201009184537130 17 15 0009400-082356 85 S+055 10
35938 09 052B   4353 G 20201009184541580 17 15 0010460-073712 85 S+055 10
35938 09 052B   4353 G 20201009184545580 17 15 0011370-065738 85 S+055 10
35938 09 052B   4353 G 20201009184549910 17 15 0012400-061340 85 S+055 10
35938 09 052B   4353 G 20201009184553910 17 15 0013300-053445 85 S+055 10
38109 12 014A   4353 G 20201009174150793 17 15 2317200+140508 85 S+035 10
38109 12 014A   4353 G 20201009174154793 17 15 2316060+133833 85 S+035 10
38109 12 014A   4353 G 20201009174220154 17 15 2308350+103445 85 S+035 10
38109 12 014A   4353 G 20201009174224154 17 15 2307140+100429 85 S+035 10
38109 12 014A   4353 G 20201009174310499 17 15 2251040+031133 85 S+035 10
38109 12 014A   4353 G 20201009174314499 17 15 2249270+023035 85 S+035 10
38109 12 014A   4353 G 20201009174339853 17 15 2238510+020730 85 S+035 10
38109 12 014A   4353 G 20201009174343853 17 15 2237000-025503 85 S+035 10


STRAYS:
--------------
26474 00 047B   4353 G 20201009180704913 17 15 2340360-075049 85 S+015 10
26474 00 047B   4353 G 20201009180734913 17 15 2340360-075049 85 S+015 10
41337 16 012A   4353 G 20201009175155321 17 15 2307410+235256 85 F+055 10
23640 95 041B   4353 G 20201009175257309 17 15 2302210+275134 85 F+055 10
23640 95 041B   4353 G 20201009175303309 17 15 2305160+272940 85 F+053 10
45734 20 038E   4353 G 20201009174652818 17 15 2253500+284250 85 F+053 10
45734 20 038E   4353 G 20201009174656818 17 15 2257310+275818 85 F+053 10


NOTES:
------------
Some strays measuring that have SPACECOM elements and "time error" from
camera applied to these objects so could help define whether there is in
fact an error. I am slightly confused at the moment !!!!

Cheers
Greg
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