Draft Timeline for GBT observing of Forerunner (miniRF) transmitter

Test Session Feb 27

    time (UT) EST activity
    20:00 1500 telescope begins moving to access position
    20:15 1515 at access, S-band receiver and IF paths configuring; Roger and Bob start climbing
    20:20 1520 test tone generator set remotely to CW tone at 2384 at predicted max level; Test data collected with SP and GASP
    20:30 1530 Roger and Bob have arrived at the receiver room; function generator is set up
    20:30-21:00 1530-1600 collect data with SP and GASP with the simulated pulse pattern at various power levels.
    21:00-21:20 1600-1620 Roger and Bob pack up and come down from the telescope
    21:20-22:00 1620-1700 Slew to Chandrayaan; test the ephemeris by observing of the housekeeping signal
  • Contigency: if its raining too hard for Roger and Bob to go up on the telescope, the backup plan is to remotely program the test tone generator with a simple pulse and repetition rate.


Calibration Session Feb 28

    time (UT) activity
    19:30 begin moving receiver into place, set up receiver and IF paths
    19:45 system is ready
    19:45 to 19:50 peak up on a pointing calibrator near the Moon (suggest 0204+1514)
    19:50 to 20:00 check ephemeris by observing the housekeeping signal
    20:00 to 20:14 prepare for the forerunner signal by setting attenuators to the settings determined Feb 27
    20:14 to 20:31 observe Forerunner signal; adjust attenuators if necessary; collect data with SP and GASP; sweep GBT across if time available
    20:31 to 22:26 collect data on polarization calibrators with and without noise cals; re-check pointing on housekeeping tone
    22:26 to 22:31 collect data from pass 2
    22:31 to 00:03 collect data on polarization calibrators with and without noise cals; re-check pointing on housekeeping tone
    00:03 to 00:08 collect data from pass 3

    Attenuator settings as determined Feb 27:
    atten value (db)
    Rcvr2_3 12
    IFRack S1 15
    IFRack S3 9
    IFRack S5 11
    IFRack S7 8
    CM1 12.75
    CM5 14.875
    CM11 25
    CM15 30
    SP-a 35
    SP-b 35


-- FrankGhigo - 27 Feb 2009
Topic attachments
I Attachment Action Size Date Who Comment
2009-02-23GBT_Cal_TimeLine2.pdfpdf 2009-02-23GBT_Cal_TimeLine2.pdf manage 119 K 2009-02-28 - 10:39 FrankGhigo Ron's Feb28 timeline
timelineFeb28_rev.txttxt timelineFeb28_rev.txt manage 652 bytes 2009-02-28 - 10:41 FrankGhigo revision to Ron's timeline
Topic revision: r2 - 2009-02-28, FrankGhigo
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