Observations 15 Jan 2001 Part 1

From: Greg Roberts (grr@iafrica.com)
Date: Tue Jan 16 2001 - 06:17:39 PST

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    Herewith positional observations made evening 15 Jan 2001 in usual IOD
    format using my CoSaTrak system in SAW mode:
    
    14729 84 012D   0433 F 20010115184913320 27 25 0436060-375249 57 S+068 05
    14728 84 012C   0433 F 20010115184945000 27 25 0433530-381321 57 S+068 05
    14728 84 012C   0433 F 20010115185003420 27 25 0449410-421183 57 S+071 05
    14547 83 120B   0433 F 20010115185056650 27 25 0551560-532360 57 S+065 05
    14547 83 120B   0433 F 20010115185054650 27 25 0549890-525031 57 S+065 05
    14547 83 120B   0433 F 20010115185058090 27 25 0552720-535088 57 S+065 05
    14728 84 012C   0433 F 20010115185044980 27 25 0530640-500262 57 V+078 05
    20691 90 050C   0433 F 20010115185528690 27 25 0831968-732194 57 S+066 05
    20642 90 050E   0433 F 20010115185529760 27 25 0816714-734564 57 S+053 05
    20692 90 050D   0433 F 20010115185538080 27 25 0830348-732570 57 S+067 05
    20642 90 050E   0433 F 20010115185606790 27 25 0755904-632215 57 S+050 05
    20691 90 050C   0433 F 20010115185608260 27 25 0806342-624206 57 S+062 05
    20692 90 050D   0433 F 20010115185617550 27 25 0805175-624714 57 S+061 05
    18025 87 043H   0433 F 20010115185906150 27 25 0554510-290658 57  +052 05
    18010 87 043F   0433 F 20010115190148050 27 25 0618642-115521 57 S+070 05
    18010 87 043F   0433 F 20010115190225900 27 25 0629620+004418 57 S+068 05
    18010 87 043F   0433 F 20010115190254000 27 25 0636754+060519 57 S+075 05
    21798 91 082A   0433 F 20010115191440400 27 25 0041330-293212 57 V+054 05
    21798 91 082A   0433 F 20010115191458680 27 25 0047770-225622 57 V+063 05
    21798 91 082A   0433 F 20010115191617350 27 25 0104950+013137 57 V+072 05
    
    Please note the following:
    
    (1) I have decreased the claimed positional accuracy from 0.05 to 0.5
    minutes
    of arc
    (2) I have decreased the claimed magnitude accuracy from 0.2 (0.3) to 0.5
    magnitudes due to the poor visual response of the ccd camera.
    
    As usual more observations to follow, namely:
    
    AMS 2, MSX, Noss 2-3 triplet, DMSP 5D-2 S-14,GFO and DMSP 5D3 F-15
    
    I am now experimenting with another lens - 70mm focal length f/1.3
    telephoto.
    This gives a slightly wider field of view than lens previously used but
    appears to
    loose about 0.3 magnitude sensitivity compared to the 80 mm focal length f/2
    lens previously used. I still have about half a dozen lenses to test before
    I settle on one or two lenses.Not all lenses are equal, even if they have
    the same
    focal lenth and f/ratio !
    
    Several ideas are now being considered to speed up the reduction of the
    video
    tapes - the above lot took approximately 4-5 hours to process !
    Cheers
    Greg
    
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