Call for Proposals

Application deadlines for observing times at the T150 and T90 telescopes

  • May 31, 2016, 24:00 GMT (midnight) for the second semester 2016 (July 1 through December 31). Earliest date for submission is April 1
  • November 15, 2016, 24:00 GMT (midnight) for the first semester 2017 (January 1 through June 30). Earliest date for submission is Octuber 1

News and remarks


The Albireo spectrograph

The new Albireo will arrive at OSN in July 2016 and the instrument commissioning will be carried out at the beginning of the second semester, 2016B.

Instrumentos disponibles

General Information


Observing modes

OSN provides three observing modes:

  • Service mode: the observations are performed by the night assistants  
  • Remote mode: the observations are performed by the astronomer outside the OSN
  • In-situ mode: the observations are performed by the visiting astronomer

The three modes can be requested in T150 and T90 both telescopes. Observations in service mode in the T150 telescope will be given priority, therefore, service observations in the T90 telescope are not guaranteed.

General rules

Fraction of nights can be requested in observing proposals and it will be permited to share those nights with other programs when the same instrument and filters are used. Filters of both the CCD cameras will not be allowed to be changed during the night. 

Who can observe in OSN?

- IAA scientists  
- Anybody who belong to a resarch institute or university buying observing time

Observation Diary Form

Observation diary form in doc format

Observing time applications


Forms for observing time application at OSN can be written in spanish or english using different type of formats: pdf, doc or latex. 

The application must be submitted by e-mail to susana[at]iaa.es in pdf format.