Observing Season and applications for observing time

General Info

Due to changes in setup and instrumentation, the observing season 2019 will be split into two halves: April 28 - beginning of August and from mid August - end of November, 2019. 


GREGOR/VTT – Call for Observing Proposals 2019A (Apr 28 – Aug 1)


The proposal form for KIS time can be downloaded here and shall be submitted to tac@leibniz-kis.de:

<Proposal form 2019A [tex]>

<Preview of proposal form 2019A [pdf]>


Deadline: January 18, 2019, 23 UT

GREGOR is a 1.5 meter on-axis solar telescope at the Observatorio del Teide in Tenerife operated in PI mode. We invite proposals for observing campaigns at GREGOR and/or VTT in 2019. Both telescopes will operate with 2 observing seasons in 2019 and the available instrumentation differs in both seasons. This call is for the first season, another call may be expected in May.

Instrumentation available for the first season is:
•    GRIS IFU (image slicer) at wavelengths 1.0–1.3 or 1.5–1.8 microns. This instrument can record spatial and spectral information simultaneously in a FOV of 6”x3”. Simultaneous H-alpha and continuum slitjaw images are available.
•    Fast context imaging in any wavelength below 900 nm (below 480 nm if using GFPI) if a suitable filter is available or provided by the observers.
•    Imaging spectroscopy (no polarimetry) with GFPI at wavelengths below 860 nm. This instrument is available only in collaboration with AIP and please contact them before proposal submission.
Please see our website (http://www.leibniz-kis.de/de/observatorien/gregor/scientific-instruments/) for the current capabilities and restrictions.


•    The chromospheric grating for spectroscopy in up to 3 spectral regions simultaneously
•    Own instrument setups

Instrumentation foreseen for the second season is:
•    GRIS: slit spectropolarimetry at wavelengths 1.0–1.3 or 1.5–1.8 microns. Fast context imaging. Imaging spectroscopy (no polarimetry) with GFPI.

•    The standard grating. Own instrument setups

Other instruments are not available in the first season and their availability for the second season is yet unclear.


Proposers reapplying for observing time are reminded that their proposal will be evaluated based on previous publications, or their clear analysis in the proposal why former data or archive data were not sufficient. Having submitted an observing report is a requirement to be eligible for further observing time.

There are different quotas for observing time in 2019A:
- KIS: 24 days. Eligibility: Any researcher with no restriction on institute/nationality can apply for observing time if at least one collaborator from KIS is included in the proposal.

- Spanish time: 16 days. Eligibility: No restriction on institute/nationality.
- CCI time: 8 days. Application via EAST TAC. Eligibility: Anybody apart from the operators of the telescope.
- SOLARNET (see separate call, www.solarnet-east.eu/news/120-tas-call-2019-1): 20 days. Eligibility: The PI and the majority of the users must work at institutions which are outside the country(ies), which operate the telescope (Germany, Spain). Travel and lodging grants are available for up to 2 people. Send proposals to east-tac@astro.su.se. Deadline 20 January 

The remaining time is reserved for partners.



For questions, please contact L. Kleint (KIS time; lucia.kleint@leibniz-kis.de) or E. Khomenko (Spanish time; khomenko@iac.es).





Options for telescope access

CCI international time program (ITP):

5% of the telescope time are reserved for international access to all solar telescopes on the Canary Islands (SST, DOT, GREGOR, VTT, THEMIS). The observing time is assigned by the EAST TAC. Anybody apart from the operator of each telescope can apply for observing time (e.g. KIS cannot apply for GREGOR or VTT time). Contact Dan Kiselman or Lucia Kleint for more information.

Spanish time (solar CAT)

See www.iac.es/OOCC/solar-cat/ for more information. According to international agreements, 20% of the observing time is reserved for assignment by the Spanish solar CAT. Presently, there are no restrictions on nationality to apply for GREGOR and VTT time through the solar CAT.


A total of 40 days are available for SOLARNET observers in 2019. The observing time is assigned by the EAST TAC.

German time

(split 20%/20%/60% between the AIPMPS, and KIS, leading to effective observing times of 15%/15%/45% of the total available time). Each institute has guaranteed observing time at GREGOR and VTT. KIS decided to open their observing time with no restriction on nationality/institute provided that at least one Co-I on the observing proposal is from KIS. Contact tac@leibniz-kis.de for more information.



GREGOR Observing plan 2018 (updated Oct 3, 2018):