Diff for "MamboWebPage" - www.iram.es Main Wiki

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Mambo Bolometers at IRAM-30m

Description

The Mambo-1 and Mambo-2 bolometers have been developed at the [http://www.mpifr-bonn.mpg.de/div/bolometer/ Max-Planck-Institut fur Radiostronomie] in Bonn by the group of Ernst Kreysa.

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Status

Online

Mambo1 is currently not available.
Mambo2 is currently online

He-Refilling

Mambo1 or Mambo2 are currently refilled with He4 every 48 hours.

OnOff pixel

Mambo1: pixel 1 is the most sensitive.
Mambo2: pixel 20 is the most sensitive.

Dead Pixels

Instabilities

Acceleration problem:
Gradient noise: about 6 % of scans are affected (stat. between 20.03.2007 and 30.03.2007)

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Observing modes

The bolometers have two basic modes of observations:

On-Off: flux measurement with a single pixel on a point-like source, using the wobbler switching.
Mapping: On-the-fly map using the wobbler switching. By default the on-the-fly scanning is along the azimuth direction together with the wobbler switching. It is now possible to rotate the wobbler and the scanning direction to get rotated map.

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Data Reduction

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Contact Persons

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Useful Links

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+=== Online ===
   * Mambo1 is currently not available.
   * Mambo2 is currently online

=== He-Refilling ===
Mambo1 or Mambo2 are currently refilled with He4 every 48 hours.


=== OnOff pixel ===
   * Mambo1: pixel 1 is the most sensitive.
   * Mambo2: pixel 20 is the most sensitive.


=== Dead Pixels ===


=== Instabilities ===
  * Acceleration problem:
  * Gradient noise: about 6 % of scans are affected (stat. between 20.03.2007 and 30.03.2007)
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+The bolometers have two basic modes of observations:
  * '''On-Off''': flux measurement with a single pixel on a point-like source, using the wobbler switching.
  * '''Mapping''': On-the-fly map using the wobbler switching. By default the on-the-fly scanning is along the azimuth direction together with the wobbler switching. It is now possible to rotate the wobbler and the scanning direction to get rotated map.
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