Optical 15 Dec 2017

From: Greg Roberts via Seesat-l <seesat-l_at_satobs.org>
Date: Sat, 16 Dec 2017 10:25:36 +0200
Observations 15 December 2017
----------------------------------------------
Cosatrak 1 (Computerised satellite Tracking System).

Canon 650D DSLR camera.

Used with 4-inch f/2.8 SKYWATCH refractor.
Field of view 261 x 174 arc minutes.

Image scale 12.0 arc sec/pixel.
All Images processed and automatically reduced using APEX.


FOR CLASSIFIED.TLE:
---------------------------------
28538           0435 F 20171215190518960 16 15 0144061+323747 28 +049 00
28538           0435 F 20171215190536410 16 15 0151136+303445 18
28538           0435 F 20171215190553860 16 15 0158454+282032 28
37162           0435 F 20171215183004300 16 15 0540127+011338 28
37162           0435 F 20171215183013250 16 15 0535412+022042 78
37162           0435 F 20171215183105810 16 15 0507574+092409 38
37162           0435 F 20171215183114500 16 15 0503198+103618 58
41759           0435 F 20171215185117740 16 15 0554582+052917 28

NOTES:
--------
(1) Shutter latency determined - not as stable as I would have liked,
     appearing to range from 0.37 to 0.43 seconds so I applied 0.40 sec.

(2) May have finally solved a problem that has been around a long time.
     Frequently would loose elevation calibration which has become more
     pronounced. Last night discovered the problem was in the 30:1 gearbox
     reduction where the output shaft of the gear was slipping -looks like
     the shear pin had probably sheared some time ago and all that held
     the gear properly on the spindle was friction. This has now hopefully
     been fixed.(FAMOUS LAST WORDS!)

(3) 41759 OFEQ 11 running a few minutes early.

Cheers
Greg

_______________________________________________
Seesat-l mailing list
http://mailman.satobs.org/mailman/listinfo/seesat-l
Received on Sat Dec 16 2017 - 02:26:42 UTC

This archive was generated by hypermail 2.3.0 : Sat Dec 16 2017 - 08:26:42 UTC