Optical 23 April 2014 Part 1

From: Greg Roberts via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 24 Apr 2014 14:53:53 +0200
Observations 23 APRIL 2013
----------------------------

Cosatrak 1 (Computerised satellite Tracking System).

FLI ML8300M CCD camera with mechanical shutter + Trimble GPS

Used with NIKON ED AF NIKKOR 80-200mm f/2.8 telephoto lens
set at 85mm focal length. Field of view 12 X 9 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:
-----------------------
05681 71 110D   0433 G 20140423174355268 55 15 2122476-812652 39  +090 05
05681 71 110D   0433 G 20140423174550821 55 15 1253041-720307 39  +078 05
05681 71 110D   0433 G 20140423174905797 55 15 1212120-105723 39  +075 05
05682 71 110E   0433 G 20140423171123752 55 15 1634041-690939 39  +095 05
05682 71 110E   0433 G 20140423171409906 55 15 1345162-405138 39  +080 05
05682 71 110E   0433 G 20140423171550955 55 15 1315121-181654 39  +080 05
05682 71 110E   0433 G 20140423171627030 55 15 1309193-110100 39  +080 05
16591 86 014A   0433 G 20140423170054606 55 15 0906566+300929 39  +090 05
16591 86 014A   0433 G 20140423170343269 55 15 0956321+122643 39  +075 05
16591 86 014A   0433 G 20140423170618723 55 15 1055160-081328 39  +078 05
16624 86 014E   0433 G 20140423201444323 55 15 0658394-133841 39  +085 05
16624 86 014E   0433 G 20140423201730767 55 15 0656525-341848 39  +077 05
16624 86 014E   0433 G 20140423202031192 55 15 0631100-600516 39  +080 05
20642 90 050E   0433 G 20140423190226220 55 15 0445098-264529 39  +045 05
20642 90 050E   0433 G 20140423190309577 55 15 0440466-314102 39  +040 05
20642 90 050E   0433 G 20140423190421829 55 15 0429286-401821 39  +040 05
20691 90 050C   0433 G 20140423185957160 55 15 0428111-420750 39  +075 05
20691 90 050C   0433 G 20140423190026076 55 15 0421237-454607 39  +075 05
20691 90 050C   0433 G 20140423190054979 55 15 0413133-492308 39  +075 05
20692 90 050D   0433 G 20140423185432299 55 15 0450306-130426 39  +080 05
20692 90 050D   0433 G 20140423185613360 55 15 0446199-231517 39  +085 05
20692 90 050D   0433 G 20140423185725545 55 15 0440013-312119 39  +077 05
20692 90 050D   0433 G 20140423185913829 55 15 0421528-443326 39  +070 05
28637 05 011B   0433 G 20140423182004691 55 15 0022086-744218 39  +065 05
28637 05 011B   0433 G 20140423182119403 55 15 0344084-701240 39  +055 05
28637 05 011B   0433 G 20140423182240327 55 15 0535357-493617 39  +050 05
37229 10 062H   0433 G 20140423182405488 55 15 0632191-154549 39  +077 05
37229 10 062H   0433 G 20140423182629973 55 15 0612147-525525 39  +075 05
37229 10 062H   0433 G 20140423182854477 55 15 0317177-804645 39  +060 05
39630 14 015A   0433 G 20140423180313369 55 15 2335328-770115 39  +055 05
39630 14 015A   0433 G 20140423180530327 55 15 0530597-574740 39  +070 05
39630 14 015A   0433 G 20140423180805947 55 15 0632507-015729 39  +070 05

UNKNOWNS SEEN:
---------------------
No 1:
99998 99 998A   0433 G 20140423172354214 55 15 1423598-454506 39  +045 05
99998 99 998A   0433 G 20140423172358214 55 15 1421438-470500 39  +045 05
No 2:
99999 99 999B   0433 G 20140423191835643 55 15 0639486-261438 39  +073 05
99999 99 999B   0433 G 20140423192101552 55 15 0630245-554411 39  +080 05
99999 99 999B   0433 G 20140423192312413 55 15 0458225-800543 39  +085 05

STRAYS SEEN:
---------------
01389 65 027D   0433 G 20140423175912492 55 15 0847188+282101 39  +075 05
08826 71 120C   0433 G 20140423175650698 55 15 0846445+355855 39  +045 05
13403 82 079B   0433 G 20140423171550955 55 15 1304579-181228 39  +030 05
24869 97 034A   0433 G 20140423174550821 55 15 1258109-721620 39  +058 05
25791 99 035A   0433 G 20140423175650698 55 15 0847104+365551 39  +050 05
26082 00 008B   0433 G 20140423201610903 55 15 0704030-234818 39  +065 05
28230 04 014A   0433 G 20140423172219887 55 15 1423397-430803 39  +035 05
28416 04 035D   0433 G 20140423180530327 55 15 0538005-584325 39  +060 05

NOTES:
--------
(1) After several continuous nights of cirrus it was clear .... and
    conditions good.

(2) Unknown 1 crossed field of view. Track angle, brightness and
    angular velocity suggest an OFEQ (not Ofeq 10 as not currently
    an evening object for me).

(3) Unknown 2 - fairly bright with small variation- may be due to
    changing phase angle.

(4) DMSP F19 appears to have changed its optical appearance -
    previously steady but now showing small variations of about half a
    magnitude with a period under one second.

(5) Still to process high altitude satellites observed- includes
    DSP F19 and Mercury 2 ( unless I made a hash up :-))

(6) A few months ago I said I was modifiying a Zhumell 10 inch BIRD-JONES
     reflector (TYCHO 254) that proved impossible to get decent images.
    The modifications  involved refiguring the 10 inch f/3.5 spherical mirror
    to parabolic. This  proved a bigger task than anticipated as the original
     aluminium surface coating would not budge despite standing in the standard
     chemicals for  removing the aluminium for over three months! In desperation
     my master optician friend - Chris Forder - ground the coating off on a 
pitch lap
     which required the mirror to be repolished, and is now being parabolized .
     Once this is  done I will have to make some modifications to the mounting 
of
     the mirror  and the support for the camera so still a few months to go 
before
     it will be operational.

Cheers
Greg



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Received on Thu Apr 24 2014 - 07:52:23 UTC

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