GTAC Observation Log 1. Date : 18/05/2010 2. Observation Sr. No. : 4871 3. Observer : Sandeep Sirothia 4. Observer's Email : sirothia@ncra.tifr.res.in,ishwar@ncra.tifr.res.in 5. Project Name : Extra Galactic survey @ 150MHz. 6. Project Code : 18_031 7. Operator(s) : Nilesh, Sachin, Santaji, 8. Command File : /odisk/gtac/cmd/sirothia/18_031_20100518a.cmd, /odisk/gtac/cmd/sirothia/18_031_20100518b.cmd, 9. LTA File : /rawdata/18may/18_031_18may2010.lta, /rawdata1/18may/18_031_18may2010.ltb, 10. GSB File : /gsbifrdata/18may/18_031_18may2010_gsb.lta, 11. LogFlag File : /odisk/online1/logflags/18_031.FLAGS.29 ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 14 dB, SA2 : 14 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 218 MHz, ILO2 : 218 MHz, IVLO1 : 62 MHz, IVLO2 : 62 MHz 14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 10+12 dB, 16 MHz,ON, IF-CH2 : 10+12 dB, 16 MHz,ON 15. BB BW(KHz) & BB ALC : 16000 KHz, ON CORRELATOR SETTINGS : 16. Channels : 0:127:1 17. Frequency Parameters (TPA) : 156 156 218 218 62 62 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) : C01 : OFF. E04 : Painting. 21. Note for Backup :-- 22. Start and End Time of Obs.(IST): 17:00 - 06:45 23. ONLINE Machine : Shivneri 24. Correlator Mode : UsbPolar 25. Comments (During Observations) : 2s lta files /rawdata/18may/18_031_18may2010_2s.lta /rawdata1/18may/18_031_18may2010_2s.ltb /gsbifrdata1/18may/18_031_18may2010_2s.lta ------------------------------------------------ 17:04 : Started scan on 3C147. 17:32 : Started command file. '/odisk/gtac/cmd/sirothia/18_031_20100518a.cmd'. 18:50 : E04 released for observation. 19:53 : W06 taken out for Honeycomb removal. 20:03 : W06 released for observation. 23:38 : Stopped command file. 23:42 : Started scan on 3C286 for 15 mins. 23:57 : Stopped scan on 3C286. 00:05 : Started next command file. 06:07 : Stopped command file. 06:15 : Started scan on J0218+4232 for 10 mins. 06:27 : Stopped scan. 06:29 : Started scan on 3C48 for 15 mins. 06:45 : Stopped scan and observation session.