Prof. Dr. rer. nat. Alfred Krabbe

Barbara Klett

Dr.-Ing. Thomas Keilig

Deputy SMO Director (Kalifornien)
Dr. rer. nat Bernhard Schulz

Standortleiter AFRC & SOFIA Teleskop Manager
Dipl.-Ing. Michael Hütwohl

Standortleiter ARC & und Facility Scientist
Dr. rer. nat. Jürgen Wolf

Technology Advisor
Prof. Dr.-Ing. Jörg Wagner

Bildungs- und Öffentlichkeitsarbeit
Dr. rer. nat. Dörte Mehlert

Deutsches SOFIA Institut
Pfaffenwaldring 29
70569 Stuttgart

Tel. +49 (0)711/685-62379
Fax +49 (0)711/685-63596

SOFIA Observing Cycle 7

Call for German Proposals

The Stratospheric Observatory for Infrared Astronomy (SOFIA) is pleased to invite proposals for its 7th regular observation cycle which is planned to take place from 27th of April 2019 - 27th of April 2020.

The official Call for German Proposals document is available for download from this website. It contains all necessary information in order to prepare and submit a proposal for scientific observations during Cycle 7.

SOFIA Observing Cycle 7 German Call for Proposals

Additional information about the US-led Cycle 7 Call for Proposals can be found on the Cycle 7 Call for Proposals website of our partner organization USRA.

A separate Call for SOFIA Legacy Program Proposals was released on the 1st of June 2018.
The Legacy Program will provide an additional 100 hours of observing time spanning two cycles (with approximately 50 hours of observing time in each cycle). Participation in the SOFIA Legacy Program is open to scientists from all categories of U.S. and non-U.S. organizations (please check details in sections 1.3.4. & 1.3.5.).

            SOFIA Legacy Science Program Call for Proposals

Cycle 7 Schedule

The nominal schedule for the Cycle 7 observing program is as follows:

June 5, 2018 Release of Call for German Proposals
July 25, 2018 Call for Proposals update
September 8, 2018, 6:00 CEST Proposal Submission deadline
November 2018 Anticipated Announcement of Selections
27 April 2019 - 27 April 2020 Cycle 7 observing period



For Cycle 7, SOFIA will offer six instruments. The available instruments will be EXES, FIFI-LS, FORCAST, FPI+, GREAT, and HAWC+.

The instrument modes available for Cycle 7 observations are listed in the Call for Proposals and described in details in the Observer's Handbook. The instrument properties are summarized on the instrument pages.

Reserved Observations Catalogs (ROCs)

Summary tables containing the reserved observations for each instrument are included as Appendices in the Call for Proposals. Generally, these may not be proposed for in Cycle 7. The policies are described in Section 3.1.1. of the Call for Proposals document.

Duplication Checking

Duplications of existing observations, or of observations approved for Cycle 6 but not yet executed, need to be justified explicitly. Proposers should search the SOFIA Science Archive for completed observations and the AOR Search page for approved Cycle 6 observations to check for potential duplications. As noted above, the ROC tables in the Call for Proposals should also be checked for disallowed observations.

The Science Archive search results tables for the GREAT instrument do not list the exact frequencies observed. Therefore, if proposers find that a target has been observed by GREAT, they should follow up by executing an AOR search for that target for "All Cycles" with GREAT as the selected instrument. The results will include the observed frequencies. The set of frequencies observed may be incomplete for observations in earlier cycles. Please contact  if you have any questions about possible duplications.

Exposure Time Estimation

Atmospheric Transmission

The atmospheric transmission as a function of wavelength may be obtained using the on-line tool ATRAN developed and kindly provided to the SOFIA progrm by Steve Lord. The use of ATRAN is necessary for planning SOFIA high-resolution spectroscopic observations.

SOFIA Publications

Refereed publications based on SOFIA data, about the Observatory and its instruments are available on the SOFIA Science Center publications page.