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What bands, frequencies, or wavelength ranges are available? - Knowledgebase / General ALMA Queries - ALMA Science

What bands, frequencies, or wavelength ranges are available?

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Eight observing bands are currently available observations. They are designated bands 3, 4, 5, 6, 7, 8, 9 and 10. The nominal frequency & wavelength ranges are:

 

BandFrequency RangeWavelength Range
 (GHz)(mm)
384-1162.59-3.57
4125-1631.84-2.40
5158 - 2111.42 - 1.90
6211-2751.09-1.42
7275-3730.80-1.09
8385-5000.6-0.78
9602-7200.42-0.5
10787-9500.32-0.38

 

These are the nominal frequency ranges for continuum observations. The OT will give validation warnings if a) any part of a spw is closer than 30 MHz to the baseband edge or b) more than half of the spw is within (30 MHz + the line width) of the baseband edge.

For more information on the observing bands, frequencies or wavelength ranges available for science observations, refer to the Technical Handbook

Related article: In what order are bands expected to be added?

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