GTAC Observation Log 1. Date : 28/8/2012 2. Observation Sr. No. : 6124 3. Observer : Nithyanandan Thyagarajan 4. Observer's Email : t_nithyanandan@rri.res.in 5. Project Name : VLA FIRST Transients 6. Project Code : 22_027 7. Operator(s) : Manisha, Navanath, Nilesh, Rupsingh, Sachin, Santaji, Surender, 8. Command File : /odisk/gtac/cmd/22_027/obs2_4.1.cmd 9. LTA File : /gsbifrdata/28aug/22_027_28aug2012.lta, /gsbifrdata/28aug/22_027_28aug2012.lta.1 10. LogFlag File : /odisk/online1/logflags/22_027.FLAGS.14 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 629 MHz ,RF2 : 253 MHz, SA1 : 0 dB, SA2 : 14 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 680 MHz, ILO2 : 304 MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 10+12 dB, 32 MHz,ON, IF-CH2 : 10+12 dB, 16 MHz,ON GSB SETTINGS : 14. GSB Mode : RealTime 15. GSB LTA : 8 16. GAIN EQ : ON 17. Stokes : Total_Intensity 18. Beam - 1 : OFF 19. Beam - 2 : OFF 20. ACQ BW : 32 MHz 21. Maximum Channels : 512 22. IFBW (MHz) : LO5 (KHz) : 32:149000-156000 23. Final Bandwidth (MHz): OFF MHz; Step # 0 24. Frequency Parameters (TPA) : 629 253 680 304 51 51. 25. Integration Time : 8.053 Sec. 26. No of Antennas Working(Fringing) :30 27. Name of Non-Working Antennas (with reason for each) : -- 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 06:00 - 22:00 30. ONLINE Machine : Shivneri 31. Comments (During Observations) : 06:14 : Started scan on 3C147. 06:30 : Stopped scan. 06:36 : Command file started. 07:59:21 : Electrical power glitch,stopped command file. 08:25:00 : Following antennas not working after power glitch. C05 : Servo time-out. E04 : ABC time-out. E04 : MCM 5 time out and was down till end of observation W01 : Servo problem. W04 : Servo problem. 08:27:00 : Started command file. 09:18:21 : C05 released for observation. 10:43:14 : W01 released for observation. 11:37:20 : W04 released for observation. 11:46:00 : C05 taken for maintenance. 11:56:00 : C05 released for observation. 14:21:21 : Stopped command file. 14:26:35 : Started scan on 3c286 for ~5min. 14:38:00 : Started command file. 21:16:16 : C13 ABC/Servo TimeOut vanished. 21:54:00 : C13 started working. 22:59:26 : Stopped command file.