Call for proposals – 2023

The next proposal deadline for the observing period July 1-October 31, 2023 is May 5, 2023 (23:59 Local Time).

Aristarchos Telescope, Close-up photo, black and white

How to apply

In order to apply for time to use the Aristarchos telescope please fill out the application form. Applications for observation time can only be submitted via e-mail. The address for the submission is: proposal “at” The e-mail should not exceed 10 MB and the subject of the e-mail should be “Aristarchos proposal”. Questions related to submitting a telescope proposal can be addressed to the same e-mail by specifying “question” as a subject.

Should your application be larger than the e-mail limit, please replace the larger figures with URL links that point to those figures. The proposal will be sent to the relevant TAC as sent by the applicant, with the link to the URL included and it will be the responsibility of the applicant to ensure that the file will be easily accessible by the TAC members..

Please download the application form here.

Who can apply

Anybody with an affiliation at a Greek institution can apply, regardless of nationality. Up to 20% of the available time will be awarded to applicants with affiliations other than IAASARS/NOA.

Time allocation criteria

All proposals are judged and ranked by our TAC on the basis of scientific merit and previous use of Aristarchos time. OPTICON proposals are judged by the OPTICON TAC. Commissioning and testing of new instruments will severely limit the available time during this period.

Important information

  1. The available instruments are: LN CCD, LN2 CCD, Andor ikon-L Camera, and RISE2. Scripts for fast filter switch cannot be used with the Andor ikon-L Camera during this period. For technical reasons the MES-AT spectrometer and the VEC camera are not available this year.
  2. The Exposure Time Calculator (ETC) is similar for both LN CCD and LN2 CCD.
  3. Due to collaboration agreements and commitments the RISE2 camera can be used for any project except for exoplanets.
  4. There is no running or accommodation cost for the observers.
  5. There are standard rides to the Observatory before and after each observing run. The visitor observers may be transferred by the observatory’s vehicle but they have to inform us well in advance. Special rides are not available, it is the observer’s responsibility to reach the Observatory on time. The visitor observer cannot stay at the Observatory before or after the observing run.
  6. The Observatory does not provide meals to the visitor observers, only drinking water. It is the visitor observers’ responsibility to arrange his/her meals. Note that before each observing run the observers may purchase food from the city of Kalavryta.


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