Optical 06 Dec 2013

From: Greg Roberts (grr@telkomsa.net)
Date: Sat Dec 07 2013 - 09:58:43 UTC

  • Next message: Greg Roberts: "Optical 06 Dec 2013 Part 2"

    Observations 06 Dec 2013
    ------------------------------------
    
    Cosatrak 1 (Computerised satellite Tracking System).
    
    FLI ML8300M CCD camera with mechanical shutter + Trimble GPS
    
    Used with 135mm focal length f/2.8 TAMRON lens.
    Field of view 7.6 x 5.7 degrees.
    Some images processed and measured manually whilst remainder
    automatically using APEX.
    
    Site 0433 : Longitude 18.51294 deg East, Latitude -33.94058 deg,
    Elevation 10 metres-situated in Pinelands (Cape Town),South Africa
    
    FOR CLASSFD.TLE:
    --------------------------
    
    (a) TOPAZ 3   2passes measured manually:
    78817           0433 G 20131206181639028 55 15 0452434+053613 28
    78817           0433 G 20131206181822642 55 15 0437509-084409 28
    78817           0433 G 20131206182010227 55 15 0416398-324115 28
    78817           0433 G 20131206200114481 55 15 0145097+290536 28
    78817           0433 G 20131206200211743 55 15 0106100+211724 28
    78817           0433 G 20131206200353716 55 15 2348302+034008 28
    78817           0433 G 20131206200640673 55 15 2140085-211424 28
    (b) TOPAZ 3 measured by APEX ( 2nd pass only):
    78817           0433 G 20131206200109369 16 15 0148174+294130 38
    78817           0433 G 20131206200113481 16 15 0145451+291226 77
    78817           0433 G 20131206200117607 16 15 0143057+284221 28
    78817           0433 G 20131206200121734 16 25 0140365+281159 28
    78817           0433 G 20131206200125783 16 15 0137257+273754 28
    78817           0433 G 20131206200129809 16 15 0135050+271038 48
    78817           0433 G 20131206200158516 16 15 0115310+231451 29
    78817           0433 G 20131206200202644 16 15 0112401+223919 58
    78817           0433 G 20131206200206700 16 15 0109470+220257 28
    78817           0433 G 20131206200210743 16 15 0106564+212652 28
    78817           0433 G 20131206200214821 16 15 0104014+204935 28
    78817           0433 G 20131206200243420 16 15 0043057+161353 38
    78817           0433 G 20131206200247476 16 15 0040050+153315 28
    78817           0433 G 20131206200251552 16 15 0036580+145100 28
    78817           0433 G 20131206200255652 16 15 0033500+140816 28
    78817           0433 G 20131206200259790 16 15 0030426+132531 28
    78817           0433 G 20131206200303983 16 15 0027316+124144 28
    78817           0433 G 20131206200308017 16 15 0024146+115629 28
    78817           0433 G 20131206200340453 16 15 2359167+060848 28
    78817           0433 G 20131206200344555 16 15 2355511+052103 28
    78817           0433 G 20131206200348652 16 15 2352367+043556 28
    78817           0433 G 20131206200352716 16 15 2349259+035141 28
    78817           0433 G 20131206200356804 16 15 2346069+030545 28
    78817           0433 G 20131206200400892 16 15 2343050+022345 28
    78817           0433 G 20131206200433399 16 15 2316558-033015 28
    78817           0433 G 20131206200437494 16 15 2313453-041158 28
    78817           0433 G 20131206200441584 16 15 2310164-045716 28
    78817           0433 G 20131206200445601 16 15 2307104-053723 38
    78817           0433 G 20131206200449705 16 15 2304112-061853 28
    78817           0433 G 20131206200453722 16 15 2300379-070031 28
    78817           0433 G 20131206200534543 16 15 2229021-131853 28
    78817           0433 G 20131206200542594 16 15 2222404-142609 28
    78817           0433 G 20131206200546705 16 15 2219251-150108 28
    78817           0433 G 20131206200550733 16 15 2216262-153243 28
    78817           0433 G 20131206200627359 16 15 2149313-195357 28
    78817           0433 G 20131206200631504 16 15 2146456-201810 28
    78817           0433 G 20131206200635595 16 15 2143469-204407 39
    78817           0433 G 20131206200639673 16 15 2140545-210838 28
    78817           0433 G 20131206200643754 16 15 2138032-213226 38
    78817           0433 G 20131206200647899 16 15 2135108-215551 28
    
    UNKNOWN SEEN IN PARTIL PLANE SCAN FOR USA 245:
    ----------------------------------------------------
    99999 99 999A   0433 G 20131206204621386 55 15 0746472-694911 28
    99999 99 999A   0433 G 20131206204625512 55 15 0732243-691446 28
    99999 99 999A   0433 G 20131206204629547 55 15 0718279-683511 28
    99999 99 999A   0433 G 20131206204633552 55 15 0704451-674847 28
    
    STRAYS SEEN:
    ---------------------
    25042 97 069D   0433 G 20131206200635595 16 15 2147405-164813 38
    25042 97 069D   0433 G 20131206200639673 16 15 2145137-175106 28
    25042 97 069D   0433 G 20131206200643754 16 15 2142396-185200 38
    25042 97 069D   0433 G 20131206200647899 16 15 2140458-195626 28
    25668 92 060E   0433 G 20131206200109369 16 15 0159109+270831 38  +071 01
    25668 92 060E   0433 G 20131206200113481 16 25 0159514+270787 88  +074 17
    25668 92 060E   0433 G 20131206200121734 16 15 0201171+270301 57  +078 00
    25668 92 060E   0433 G 20131206200125783 16 15 0202023+270109 28  +076 01
    25668 92 060E   0433 G 20131206200129809 16 15 0202488+265907 49  +083 07
    
    NOTES:
    --------
    (1) Observing session to look for new launch TOPAZ 3 - aka FIA RADAR 3
    
    (2) Two passes of TOPAZ 3 observed - the first in very bright twilight
        so had to use exposures of 0.3 seconds and taken every 2 seconds.
        Fortunately most frames had a few stars as stars as faint as mag +8
        recorded. TOPAZ 3 bright low on eastern horizon when it came out of
        earths shadow and easily tracked till about culmination after which
        I lost it - rather abrupt drop in magnitude . For this pass I could
        not use APEX so measured manually - APEX expects to find at least
        several dozen stars before it will attempt a reduction.
    
    (3) Second pass TOPAZ 3 observed coming out of shadow after which it
        brightened quickly and remained an easy object until about
        culmination at which point it again rather abruptly decreased
        magnitude by about 2-3 magnitudes and eventually became invisible
        in the setup used. TOPAZ 3 is showing the same optical behaviour as
        reported by Scott Tilley for FIA Radar 2 and is probably an
        indication that the radar array has not yet been extended.
    
    (4) A half-hearted look for the rocket was made and not helped by a
        slight "technical" problem. If not spotted by other observers I
        will attempt a plane scan when next I observe - tonight if clear.
    
    (5) Did a partial plane scan (about 70 minutes) for USA 245. An unknown
        object observed but am inclined to think its not USA 245 as it was
        about 2 magnitudes fainter than what I would have expected and it
        also appeared to be variable so am inclined to think its a large
        piece of debri. The other 12 satellites observed during the scan
        all positively identified and nothing exciting so not measured.
    
    (6) Still have some images to go through and identify what the seen
        satellites are but do not expect anything exciting so if I report
        nothing then there was nothing worth reporting.( sort of makes
        sense :-))
    
    Cheers
    Greg
    
    
    
    
    
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