Optical 29 Sept 2020

OPTICAL 29 SEPT 2020
---------------------

Site 0435 Pinelands (Cape Town,South Africa)

 18.5101 degrees east  33.9368 degrees south
 altitude 25.5 metres

ZWO ASI 148MM 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, 2xs 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. My Trimble GPS system is now useless due to
GPS roleover last year so may have to get a new GPS system.

4.00 second long exposures used and hopefully camera gives 4.00 seconds as
time recorded in FITS file header as start of exposure time so for the three
trails obtained hopefully have five reasonably accurate times.

FITS images reduced in NOVA.ASTROMETRY.NET to provide plate solution and
SAO DS9 used to determine coordinates of ends of trails.

Mike - if any problems ditch this in file 13 :-))))   I still have a fair
bit
of work before I am ready to trak again with my very limited view of the sky
from my apartment in an Old Age home :-((((

For CLASSIFIED.TLE:
---------------------
20642 90 050E   0435 P 20200929175650700 16 15 2144448-054238
20642 90 050E   0435 P 20200929175654700 16 15 2146225-042407
20642 90 050E   0435 P 20200929175657200 16 15 2147249-034541
20642 90 050E   0435 P 20200929175701200 16 15 2149024-022922
20642 90 050E   0435 P 20200929175703700 16 15 2149570-015230

Cheers
Greg
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