Proposals

Arizona Radio Observatory 2025B Call For Proposals

The deadline for proposals is 23:59 MST on September 19, 2025.

Email the proposal to:

astro-aroproposals@list.arizona.edu.

The Arizona Radio Observatory (ARO) solicits proposals for semester 25B for observations with the UA ARO 12-meter Telescope (12M), located on Kitt Peak, Arizona.

• Proposals are accepted from Arizona-affiliated PIs only (UArizona, ASU, and NAU).
• The observations will be limited to the period of Oct 15 - Dec 1.
  From Dec 1, the 12M will host a visiting instrument.
• In case of oversubscription, preference will be given to student thesis proposals.

Note that at this time, no proposals are solicited for the UA ARO Submillimeter Telescope (SMT; Mount Graham, Arizona) pending the completion of installation and commissioning of a new dual-band 230/345 GHz receiver and a new spectrometer offering bandwidths of 15.6 kHz to 1 MHz (see https://aro.as.arizona.edu/?q=facilities/uarizona-aro-submillimeter-telescope).

Proposers for 12M observations are requested to fill out both pages of the cover sheet and combine into one single PDF file the following:

1. Proposal Cover Sheet (two pages - must use the 2-page cover sheet found here): https://aro.as.arizona.edu/sites/default/files/ARO_Proposal_Cover_Sheet.pdf 
2. Science justification (no more than two pages)
3. Technical justification (no more than one page)
4. Update on analysis/publication of past time allocations of observing time (no more than one page). Students should describe the current status of their thesis research and how the current proposal advances that work.

Note: references do not count against your page limit and may be included as a separate additional page.

The combined PDF should follow the following naming convention:

           LastName_FirstInitial_Semester_1.pdf

where the LastName and FirstInitial are of the PI of the proposal, 'Semester' as announced in the call (‘25B’) with a sequence number _1, _2, etc., to distinguish multiple proposals from the same PI.

Email the PDF file to astro-aroproposals@list.arizona.edu.

The 12M Telescope supports dual-polarization sideband-separating observations at 4mm (69 – 90 GHz HEMT), 3mm (84 – 116 GHz SIS), 2mm (129 – 180 GHz SIS), and 1mm (210 – 275 GHz SIS) with the AROWS backend offering bandwidths of 20 to 4000 MHz and channel spacings from 9.8 to 625 kHz. Observations are restricted to single-sideband observations until further notice.

The telescope control system supports dual-polarization position-switched, beam-switched, and On-The-Fly observations. Proposal candidates should consult the ARO Equipment Summary and Status sheet for additional and up-to-date technical specifications and observational capabilities: http://aro.as.arizona.edu/?q=observing-aro/instrumentation

ARO facilities are currently restricted to remote observing:

• Observers must supply fixed IP address(es) of the computer(s) that will be used during observing on their Proposal Cover Sheet. For further information about remote observing please consult:
  https://aro.as.arizona.edu/?q=remote-observing-manual.
• For other operational questions, please contact the ARO Helpdesk:
  https://aro.as.arizona.edu/?q=observing-aro/aro-helpdesk.

Proposals will be reviewed by the ARO TAC and scheduling recommendations are made by the TAC to the Director of Steward Observatory. Proposals will be scheduled according to the availability of the requested receivers. Institutions (or individuals) outside of the State of Arizona that wish to acquire longer or guaranteed commitments of time through a limited duration agreement with The University of Arizona should contact Buell Jannuzi, Director.