12 Meter Status


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Telescope System Status Report


The following contains up-to-date information on the telescope system. If there have been any recent failures in any of the telescope system components, they are reported here so that observers with pending observing programs can use this information to form their observing strategies.

Last update: November 17, 2005


Frontends

Name Available Out of Service
2mmsis OK  
3mmhi OK  
3mmlo OK  

Backends

Name Available Out of Service
30 KHz OK  
100KHz OK  
250 KHz OK  
500 KHz OK  
1000 KHz (plain) OK  
1000 KHz ( Red ) OK  
2000 KHz (plain) OK  
2000 KHz ( Red ) OK  
MAC OK  
DBE OK  

 


General

To submit an observing proposal, please refer to the call for proposals at 12 M Proposal Information.

  • Call the operator at (520) 318-8670 to get the password for remote observing.
  • All 1mm observing is now done at the 10 Meter SMT using the new 1-2mmsis J-T Receiver.

A new remote observing manual is available online. This manual provides detailed instructions for conducting a remote observing session at both ARO facilities (KP12m and HHSMT).


Telescope

Functioning Normally


Tipper

Functioning Normally


Pointing

Radio pointing has been stable this past season with few exceptions with no significant dependence with EL or AZ.


Receivers

  • A new refrigerator has been installed in the 23mm receiver with additional modifications to the radiation shield. These upgrades should improve the reliability of the closed-cycle cooling system.

  • All Gunn Servos for the local oscillator have also been rebuilt to allow greater ease of receiver tuning.

68-90 GHz:

Available.

90-116 GHz:

Available.

130-170 GHz:

Available.

205-295 GHz:

Remove from Service. All 1mm observing is now done at the 10 Meter SMT using the new 1-2mmsis J-T Receiver.


Spectrometers

Filter Banks:

All resolutions are presently available.

Each filter bank has been individually tested and leveled.

Millimeter Autocorrelator (MAC):

The MAC is functioning normally in all 2IF modes.

Basic Functions:

  • OTF mode is now available for modes with less than a total of 16k channels.
  • All position and frequency switched observing modes are functional.
  • Both Class and UniPOPS can process MAC spectra. UniPOPS cannot process the 32768 channel mode. Since the analog filters have 75% efficiency for all modes, we now default, clip off the edges of MAC spectra. This is a user-definable parameter.
  • An NRAO written report describing the basic properties of the MAC can be found here.

Control Software

During the summer of 2004 all high level computers were upgrade to new Intel PC's running Linux. All backends still are using Motorola VME computers running vxWorks. Observers should not notice any different in usability other then a massive increase in performance.


 Copyright Arizona Radio Observatory.
For problems or questions regarding this web contact [tfolkers{at}email{dot}arizona{dot}edu].
Last updated: 11/08/11.