Submitted by: Tatsuhiko I. Hasegawa

Date: Monday, October 10, 2006 at 23:12:22

Program:

AS-H8

Telescope:

KP12m

Receiver:

3mmhi

DateOfRun:

Oct 25, 26 - 27, 2006

Phone:

+886-2-3365-2200 ex 722

Manuals:

No Comment.

Equipment:

CLASS (plot) was slow as usual.

Support:

Good. If an observing instruction is sent 24 hours ahead, observations can be performed by the operator without close monitoring by an observer.

Objectives:

Yes. Last year, dense cores were mapped in CN(1-0) at a 60" sampling. This run's objective was to fill-in between the 60" grid points. CN(1-0, 3/2-1/2) spectra were obtained at such 14 positions.

Problems:

Disruption of internet connection (October 25, 21h MST to 23h30m MST) - We started a remote session 30 minutes ahead of schedule. Then, the ssh connection became slow, and then froze before the starting time of our run (AS-H8). At the same time, we had difficulty in accessing the ARO web site. We still had ssh and web accesses to other North American sites. Probably one of regional nodes was temporarily down. The network connection recovered in 2.5 hours.

Resolved:

We called the 12m operator and asked to carry out the observation as in the instruction. The operator did a good job. (But the weather was not good.) A submission of an observing instruction 24 hours ahead was the solution. The instruction should be simple and easy to follow. Keep encouraging remote observers to submit an instruction 24hours ahead of an observing run.

Hours_lost_weather:

6 hours (closed dome, or Tsys > 700K) on Oct 25. 0 hr on Oct26 and 27.

Hours_lost_equipment:

1 hour for FS_OFF1 = 1.4 0.0 FS_OFF2 = 0.0 0.0 . (freq offset was 0 for ch2 for some time, but Tsys was too high anyways). 0 hr on Oct26 and 27.

Suggestions:

Others:

kuan{at}asiaa{dot}sinica{dot}edu{dot}tw