GTAC Observation Log 1. Date : 21/12/2008 2. Observation Sr. No. : 4105 3. Observer : Divakara Mayya 4. Observer's Email : ydm@inaoep.mx 5. Project Name : Ring Galaxies 6. Project Code : 15YDM01 7. Operator(s) : Deepak, Manisha, Nilesh, Shilpa 8. Command File : /odisk/gtac/cmd/15ydm01/21dec08/obs-cart.cmd, /odisk/gtac/cmd/15ydm01/21dec08/obs-arp1.cmd, 9. LTA File : /rawdata/21dec/15ydm01_21dec2008.lta, /rawdata1/21dec/15ydm01_21dec2008.ltb 10. LogFlag File : /btemp2/logflags/15YDM01.FLAGS ANTENNA SETTINGS : 11. RF Freq(MHz) & Solar Attn(dB)- RF1 : 610 MHz ,RF2 : 610 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 540 MHz, ILO2 : 540 MHz, IVLO1 : 70 MHz, IVLO2 : 70 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 dB, 32 MHz,ON 14. BB BW(KHz) & BB ALC : 16000 KHz, ON CORRELATOR SETTINGS : 16. Channels : 0:127:1 17. Frequency Parameters (TPA) : 610 610 540 540 70 70 18. Integration Time : 128 LTA ~ 16.908 Sec. 19. No of Antennas Working(Fringing) :28 20. Name of Non-Working Antennas (with reason for each) : C04 : Servo problem. C05 : ILO Unlock 21. Note for Backup : -- 22. Start and End Time of Obs.(IST): 16:15 - 08:08 23. Comments (During Observations) : ------------------------------------------- ******** ONLINE Machine : Bhaskar ********* ******** Corr Mode : IndianPolar ********* -------------------------------------------- 16:15 : Started setting. 16:25 : Started scan on 3C48. 16:36 : Stopped scan. 16:47 : '/odisk/gtac/cmd/15ydm01/21dec08/obs-cart.cmd' command file started. 17:00 : C05 not fringing. 22:45 : Command file stopped. 22:50 : Started scan on 3C147 ~ 10mins. 23:00 : Stopped scan & started command file '/odisk/gtac/cmd/15ymd/21dec08/obs-arp1.cmd' 23:33 : E-arm power failure. 23:46 : E-arm back in observation. 07:47 : Stopped command file. 07:52 : Started scan on 3C286. 08:08 : Stopped scan and observing session over.