GTAC Observation Log 1. Date : 03/10/2015 2. Observation Sr. No. : 8107 3. Observer : George Heald, Peter Kamphuis, Gyula I.G. Józsa, Paolo Serra, p a Duc, Gianfranco Gentile, Tom Oosterloo, Eva Juette, Maria Patterson, David A Thilker, Erwin deBlok 4. Observer's Email : heald@astron.nl, peter.kamphuis@csiro.au, jozsa@astron.nl, serra@astron.nl, paduc@cea.fr, gianfranco.gentile@ugent.be, oosterloo@astron.nl, eva.juette@astro.rub.de, mtpatter@nmsu.edu, dthilker@pha.jhu.edu, blok@astron.nl 5. Project Name : %latex%What is the dark \\textsc{H\\,i} companion to NGC 4274? 6. Project Code : 25_061 7. Operator(s) : Deepak, Navnath, Sachin 8. Command File : /odisk/gtac/cmd/chengalu/hi1220.cmd 9. LTA File : /gsbifrdata1/03oct/25_061_03oct2015.lta 10. LogFlag File : /odisk/online1/logflags/25_061.FLAGS.6 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1405 MHz ,RF2 : 1405 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1345 MHz, ILO2 : 1345MHz , IVLO1 : 60 MHz, IVLO2 : 60 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1 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 : 4 MHz; Step # 2 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 140 28. LO5 -2 : 165 29. Frequency Parameters (TPA) : 1405 1405 1345 1345 60 60 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :25 32. Name of Non-Working Antennas (with reason for each) : C01 : Servo work C12 : Servo problem. E03 : Servo work W04 : MCM 5 timed out. W02 : Servo problem 33. Note for Backup : 34. Start and End Time of Obs.(IST): 03 Oct 2015 06:00:00 - 03 Oct 2015 18:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : 06:14 : Started scan on 3C147 for 15mins. 06:51 : Started command file 07:05 : W02 started working. 10:01 : C12 started working 10:05 : C03 released for maintenance. 10:15 : E03 started working. 10:23 : C04 released for painting. 10:40 : C06 released for painting. 12:36 : C01 started working. 14:25 : Electrical power failure. 15:05 : C06 released for observation. 16:02 : E02: ABC time out 16:04 : C04 released for observation 16:37 : E03 : ABC Time out. 16:55 : electrical power resumed. 17:10 : Restarted cmd file. 17:27 : cmd file stopped, src below horizion. 17:41 : Started scan on 3C286. 18:00 : Observation session over.