Optical 12 Sept 2014

From: Greg Roberts via Seesat-l <seesat-l_at_satobs.org>
Date: Sun, 14 Sep 2014 11:55:42 +0200
Observations 12 SEPT 2014
------------------------------------

Cosatrak 1 (Computerised satellite Tracking System).

FLI ML8300M CCD camera with mechanical shutter + Trimble GPS

Used with 88mm focal length f/2.8 Nikon telephoto lens.
Field of view 11.5 x 8.6 degrees.
Images processed and measured manually.

Site 0433 : Longitude 18.51294 deg East, Latitude -33.94058 deg,
Elevation 10 metres-situated in Pinelands (Cape Town),South Africa

FOR CLASSFD.TLE:
-----------------------------
16117 85 092C   0433 F 20140912200926676 16 15 2021290-105022 48  +121 00
16117 85 092C   0433 F 20140912201659455 16 15 2029123-104503 58  +090 01
16117 85 092C   0433 F 20140912202300428 16 15 2035196-103904 58  +121 01
20641 90 050A   0433 F 20140912195420364 16 15 0949140-780447 28
20641 90 050A   0433 F 20140912195612376 16 15 0225330-801449 28
20641 90 050A   0433 F 20140912195649988 16 15 0125054-742848 28
21873 92 006A   0433 F 20140912200533241 16 15 2035212-082845 58  +128 03
21873 92 006A   0433 F 20140912200731479 16 15 2037202-082902 78  +135 08
21873 92 006A   0433 F 20140912202300428 16 25 2053062-082727 28  +136 74
23855 96 026A   0433 F 20140912213306909 16 15 0022162+041127 58  +091 10
23855 96 026A   0433 F 20140912213640416 16 15 0025327+042116 48  +104 01
25157 98 007A   0433 F 20140912184012560 16 15 1333209-485824 28
25157 98 007A   0433 F 20140912184017784 16 15 1339130-472558 28
25157 98 007A   0433 F 20140912184023006 16 15 1342353-455428 28
28500 04 050A   0433 F 20140912204843408 16 15 2210325-101830 18  +127 02
28500 04 050A   0433 F 20140912204958408 16 15 2211463-101917 28  +120 05
29522 06 050A   0433 F 20140912180456387 16 15 1209071-563246 28  +080 05
29522 06 050A   0433 F 20140912180501611 16 15 1215205-554321 28  +080 05
29522 06 050A   0433 F 20140912180506850 16 15 1221327-544732 28  +080 05
29522 06 050A   0433 F 20140912180512067 16 15 1227358-535308 28  +080 05
33490 09 001A   0433 F 20140912213306909 16 15 0009257+032747 18  +071 10
33490 09 001A   0433 F 20140912213640416 16 15 0013023+033301 48  +072 01
35815 09 047A   0433 F 20140912212236000 16 15 0015097+051741 38  +091 01
35815 09 047A   0433 F 20140912213306909 16 15 0025459+051723 28  +082 10
35815 09 047A   0433 F 20140912213640416 16 15 0029189+051806 58  +088 02
38758 12 048A   0433 F 20140912195342967 16 15 0927086-731355 28
38758 12 048A   0433 F 20140912195355455 16 15 0910569-742055 28
38758 12 048A   0433 F 20140912195414136 16 15 0840562-755425 28
38773 12 048P   0433 F 20140912195342967 16 15 0922146-734919 28
38772 12 048P   0433 F 20140912195355455 16 15 0905000-745642 28
38772 12 048P   0433 F 20140912195414136 16 15 0832125-762803 28
40102 14 043D   0433 F 20140912213640416 16 15 0007546+053639 48  +101 01
40102 14 043D   0433 F 20140912214040415 16 15 0011429+053728 18  +100 05

STRAYS SEEN:
-------------------
00622 63 030A   0433 F 20140912180909755 16 15 1652220-454226 28
14670 84 008A   0433 F 20140912172518979 16 15 2235106-221034 28  +065 05
28352 04 021A   0433 F 20140912175455066 16 15 1214517-545422 28
28479 04 046A   0433 F 20140912175455066 16 15 1224018-562620 28  +069 05
39209 13 037B   0433 F 20140912172412984 16 15 2234169-511733 28  +075 05

NOTES:
---------
(1)Not a very productive night trying to recover satellites not observed
   for a long time. Appears I only recovered GEOSAT FO running 138 sec
   late and DMSP F17 #29522 running about 244 seconds late. Some
   satellites I should have seen were NOT seen - eg OTV 3 on an overhead
   pass so maybe moved again. DMSP F17 faint so trail ends not well
   defined so maybe a bit of scatter in positions.

(2)Conditions apparently not too good due to high altitude mist so
   satellites "fainter" than normal. Obviously the 88mm focal length
   lens at f/2.8 is too small an aperture for my conditions for the
   fainter satellites so next time will change the lens to around 200mm
   focal length which will effectively double the aperture. (The Nikon
   lens maintains f/2.8 at all focal length settings -unlike cheaper
   telephoto lens - thats why so expensive and ~18 internal elements
   which loves producing internal lens reflections on bright objects!)

(3) I have not reported some classified satellites seen by others
    subsequent to my observations.Also not reported a large number
    of commercial geostationary and several GLONASS and NAVSTAR
    satellites.

Cheers
Greg 

_______________________________________________
Seesat-l mailing list
http://mailman.satobs.org/mailman/listinfo/seesat-l
Received on Sun Sep 14 2014 - 04:55:52 UTC

This archive was generated by hypermail 2.2.0 : Sun Sep 14 2014 - 09:55:52 UTC