GTAC Observation Log 1. Date : 16/11/2015 2. Observation Sr. No. : 8175 3. Observer : Nissim Kanekar. 4. Observer's Email : nkanekar@ncra.tifr.res.in 5. Project Name : uGMRT project. 6. Project Code : DDTUG05 7. Operator(s) : Navnath, Pramod, Surender 8. Command File : /odisk/gtac/cmd 9. LTA File : /gsbifrdata/15nov/ddtug05_15nov2015.lta.2, /gsbifrdata/15nov/ddtug05_15nov2015.lta.1, /gsbifrdata/15nov/ddtug05_15nov2015.lta 10. LogFlag File : /odisk/online1/logflags/DDTUG05.FLAGS.2, /odisk/online1/logflags/DDTUG05.FLAGS.1, /odisk/online1/logflags/DDTUG05.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 403 MHz ,RF2 : 403 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 465 MHz, ILO2 : 465MHz , IVLO1 : 62 MHz, IVLO2 : 62 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 16 MHz,ON, IF-CH2 : 4+14 dB, 16 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_shivneri 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE 18. GSB Fstop : ON 19. GAIN EQ : ON 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 16.666666 MHz 24. Final BW : 16.666666 MHz; Step # 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 138 28. LO5 -2 : 167 29. Frequency Parameters (TPA) : 403 403 465 465 62 62 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :26 32. Name of Non-Working Antennas (with reason for each) : W03 : Taken for BLDC. C08 : Low fringe. C11 : CST Painting. C12 : No fringe. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 15 Nov 2015 22:25:00 - 15 Nov 2015 06:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :26 37. Comments (During Observations) : 22:25 : Started set up for 325 MHz. 22:25 : 00:00 : GWB is not working (fringing) for ACQ 100MHZ and GAB LO490. 22:57 : Started gsb scan on 3C48. ---------------------------------------------------------- 00:00 : GWB problem solved,Started new setting for GWB. GAB Lo-490, ACQ-200MHz. C09,C11,C12,E04-175pol not working. ---------------------------------------------------------- 00:17 : Started scan on 3C48. 00:37 : Started command file. 02:25 : Stopped command file. ---------------------------------------------------------- 02:26 : Started following set up. Settings for observation-3: Command file : /odisk/gtac/cmd/nissim/0432-440.cmd Target source : 0432-440 Flux calibrator : Not needed. Phase calibrator: 0438-436 Line frequency : 430.8 MHz All ALCs ON RF Band : 327 MHz LO(1) : 500 MHz IF BW : 18 MHz LO(5) : 138 167 MHz LO(4) : 62 62 MHz Baseband BW : 2.08 MHz Step : 3 Channels : 512 lta : 4 TPA : 438 438 500 500 62 62 The band should cover 429.67 - 431.75 MHz GWB settings: Same as above. 02:30 : Started command file. 04:08 : Stopped command file. ---------------------------------------------------------------------------Settings for observation-4: Source list : /odisk/gtac/source/nk.list Command file : /odisk/gtac/cmd/nissim/0845+4257.cmd Target source : 0845+4257 Flux calibrator : 3C147 Phase calibrator: 0834+555 Line frequency : 463.4 MHz All ALCs ON RF Band : 327 MHz LO(1) : 535 MHz IF BW : 18 MHz LO(5) : 137.8 167.2 MHz LO(4) : 62.2 62.2 MHz Baseband BW : 2.08 MHz Step : 4 Channels : 512 lta : 4 TPA : 472.8 472.8 535 535 62.2 62.2 The band should cover 464.47 - 462.38 MHz. ----------------------------------------------- 04:18 : Started command file. 05:55 : Stopped command file. 05:55 : Started scan on 3C147. 06:02 : Stopped scan and observing session is over.