Editing Radio astronomy (section)

==International regulation==
[[File:Goldstone DSN antenna.jpg|thumb|200px|Antenna 70 m of the [[Goldstone Deep Space Communications Complex]], [[California]]]]
[[File:Green Bank Telescope.jpg|thumb|200px|Antenna 110m of the [[Green Bank Telescope|Green Bank radio telescope]], US]]
[[File:Sbursts1.ogg|thumb|200px|Jupiter radio-bursts]]

'''Radio astronomy service''' (also: ''radio astronomy radiocommunication service'') is, according to Article 1.58 of the [[International Telecommunication Union|International Telecommunication Union's]] (ITU) [[ITU Radio Regulations|Radio Regulations]] (RR),<ref>ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.58, definition: '' radio astronomy service / radio astronomy radiocommunication service''</ref> defined as "A [[radiocommunication service]] involving the use of radio astronomy". Subject of this radiocommunication service is to receive [[radio wave]]s transmitted by [[astronomical object|astronomical]] or celestial objects.

===Frequency allocation===
The allocation of radio frequencies is provided according to ''Article 5'' of the ITU Radio Regulations (edition 2012).<ref>''ITU Radio Regulations, CHAPTER II – Frequencies, ARTICLE 5 Frequency allocations, Section IV – Table of Frequency Allocations''</ref>

To improve harmonisation in spectrum utilisation, the majority of service-allocations stipulated in this document were incorporated in national Tables of Frequency Allocations and Utilisations which is within the responsibility of the appropriate national administration. The allocation might be primary, secondary, exclusive, and shared.
*primary allocation: indicated by writing in capital letters (see example below)
*secondary allocation: indicated by small letters
*exclusive or shared utilization: within the responsibility of administrations

In line to the appropriate [[International Telecommunication Union region|ITU Region]], the frequency bands are allocated (primary or secondary) to the ''radio astronomy service'' as follows.

{| class=wikitable
|- bgcolor="#CCCCCC" align="center"
|align="center" colspan="3"| '''Allocation to services'''
|- align="center"
| &nbsp;&nbsp;&nbsp;&nbsp; Region 1 &nbsp;&nbsp;&nbsp;&nbsp;
| &nbsp;&nbsp;&nbsp;&nbsp; Region 2 &nbsp;&nbsp;&nbsp;&nbsp;
| &nbsp;&nbsp;&nbsp;&nbsp; Region 3 &nbsp;&nbsp;&nbsp;&nbsp; 
|-
|colspan="3"|13 360–13 410 '''kHz'''&nbsp; FIXED<br />
:::::&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; '''RADIO ASTRONOMY'''
|-
|colspan="3"|25 550–25 650 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; '''RADIO ASTRONOMY'''
|-
|colspan="3"|37.5–38.25 '''MHz'''&nbsp; FIXED<br />
::::: MOBILE<br />'''Radio astronomy'''
|-
|colspan="3"|322–328.6 &nbsp; &nbsp; FIXED<br />
:::: MOBILE<br />'''RADIO ASTRONOMY'''
|-
|colspan="3"|406.1–410 &nbsp; &nbsp; FIXED<br />
:::: MOBILE except aeronautical mobile<br />'''RADIO ASTRONOMY'''
|-
|colspan="3"|1 400–1 427&nbsp;&nbsp; EARTH EXPLORATION-SATELLITE (passive)<br />
:::: '''RADIO ASTRONOMY'''<br />SPACE RESEARCH (passive)
|-
|colspan="1"|1 610.6–1 613.8<br />
MOBILE-SATELLITE <br />
:(Earth-to-space)
'''RADIO ASTRONOMY'''<br />AERONAUTICAL <br />
:RADIONAVIGATION
<br />
<br />
 |colspan="1"|1 610.6–1 613.8<br />
MOBILE-SATELLITE <br />
:(Earth-to-space)
'''RADIO ASTRONOMY''' <br />AERONAUTICAL <br />
:RADIONAVIGATION
RADIODETERMINATION-<br />
:SATELLITE (Earth-to-space) 
 |colspan="1"|1 610.6–1 613.8<br />
MOBILE-SATELLITE <br />
:(Earth-to-space)
'''RADIO ASTRONOMY''' <br />AERONAUTICAL <br />
:RADIONAVIGATION
Radiodetermination-<br />
:satellite (Earth-to-space) 
|-
|colspan="3"|10.6–10.68 '''GHz''' &nbsp; '''RADIO ASTRONOMY''' and other services
|-
|colspan="3"|10.68–10.7 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; '''RADIO ASTRONOMY''' and other services
|-
|colspan="3"|14.47–14.5 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; '''RADIO ASTRONOMY''' and other services
|-
|colspan="3"|15.35–15.4 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; '''RADIO ASTRONOMY''' and other services
|-
|colspan="3"|22.21–22.5 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; '''RADIO ASTRONOMY''' and other services
|-
|colspan="3"|23.6–24 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; '''RADIO ASTRONOMY''' and other services
|-
|colspan="3"|31.3–31.5 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; '''RADIO ASTRONOMY''' and other services
|-
|}