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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 1,3, 4, 5, 6, 7, 8, 9 and 10. The nominal frequency & wavelength ranges are:

 

Band

Frequency Range

Wavelength Range

 

(GHz)

(mm)

1

35-50

8.5-6

3

84-116

2.59-3.57

4

125-163

1.84-2.40

5

158 - 211

1.42 - 1.90

6

211-275

1.09-1.42

7

275-373

0.80-1.09

8

385-500

0.6-0.78

9

602-720

0.42-0.5

10

787-950

0.32-0.38

 

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

Please also see the Observing With ALMA - A Primer for an introduction on how to use ALMA.

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