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IMPORTANT: Please note that currently NO proposals can be submitted. Please wait for the next call. More information can be found at the Applying for Telescope Time pages.

WEAVE Open-Time Phase 1

1 May 2026 – 31 October 2026
(trimesters 2026A2 – 2026B1)


InformationThe WEAVE Open-Time Programme | Latest Announcement of Opportunity
Proposal information
Principal investigator
One single word in both cases, e.g. 'James Smith' or 'María-Jesús Pérez-García'.
Forename:
Surname:
E-mail If more than one email, separate with commas.

Type again:
Affiliation   Your primary affiliation, e.g. 'University of Bristol (UK)', 'University of Amsterdam (NL)'.
Time Allocation Committee   The proposal will be sent to the following time-allocation committee for assessment:

ES CAT (Spain) NL PC (The Netherlands) ING PATT (United Kingdom)

Co-investigators Please separate by commas, e.g. 'John Maxwell (Leicester University), Pedro Hernandez (IAC)'.
Title
Related WEAVE survey(s) List related WEAVE Surveys (if any) separated by commas. E.g. GA, SCIP, Gal Clus, StePS, WEAVE-Apertif, WEAVE-LOFAR, WEAVE-QSO, WEAVE-WD.
Scheduling requirements   Check below for any non-standard scheduling requirements.

None Target of opportunity Time-critical Time monitoring Long-term

Summary
Please state here the overarching goals of your proposal, the relevance to the broader scientific field and the immediate science objectives of the proposal. Text should contain no more than 200 words.
Scientific and technical information
Information about WEAVE/LIFU's observational capabilities (e.g. spectroscopic resolutions, wavelength ranges and expected signal-to-noise ratios) can be found on the WEAVE instrumental overview page. For additional information, or advice about e.g. observing strategy, or about observations with unusual setup, acquisition, tracking or scheduling requirements, contact Chris Benn (crbing.iac.es).

The detector on each arm of the spectrograph is a mosaic of two 6k×6k e2V CCDs. The default readout mode is slow, with no binning in the spatial direction. A requirement for a different readout mode should be justified in the technical case above. More detailed infomation, required to construct the WEAVE observing blocks, will be sought in phase 2.

File upload
Upload a PDF file extending no more than four pages and including two sections to justify the scientific case and the observations requested. Figures and captions can be included. Maximum file size is 3M. In observations requested, mention specifically what feature(s) you want to measure and how. Justify what signal-to-noise is necessary and the estimated integration time to realise this. Specify the airmass, FWHM and sky brightness used for such calculation. Justify the instrument mode and the setup choice.

Upload:

Instrument setup
Focal-plane mode LIFU (lenslet diameter=2.6 arcsec, hexagonal FoV 90 arcsec×78 arcsec)
Spectrograph mode Low-resolution blue+red (LR_BR)
R ~ 2500, wavelength ranges ~ 3660 - 6060 Å and 5790 - 9590 Å

High-resolution blue+red (HR_BR)
R ~ 10,000, wavelength ranges ~ 4040 - 4650 Å and 5950 - 6850 Å

High-resolution green+red (HR_GR)
R ~ 10,000, wavelength ranges ~ 4730 - 5450 Å and 5950 - 6850 Å

Spectral binning Consider spectral binning for reducing the exposure time.
x1 x2 x4    
Targets
Targets
Provide summary information about the fields to be observed. Use object visibility, sexagesimal to degree coordinate convertor, exposure time calculator, PROGTEMP builder, OBSTEMP builder. For a field with multiple targets, specify maximum and minimum point-source magnitudes (Pmin and Pmax) if MOS, or maximum and minimum surface-brightness magnitudes (Smin and Smax, magnitudes/arcsec2) if mIFU. For LIFU-mode observations, specify whether the provided magnitude is for a point-source target (P) or extended (S, mag/arcsec2). Follow this format (leave one single blank space between columns):

Target RA(degrees) Declination(degrees) Equinox Band=Mag PROGTEMP OBSTEMP

Examples follow:

NGC3379 161.95666666666665 -12.581638888888889 J2000 V=9.3P 41331 SEFEE
NGC4486BR 187.70583333333335 12.391111111111110 J2000 V=8.6S 61331 SACBC
NGC4486BR 187.70583333333335 12.391111111111110 J2000 V=8.6S 41331 XCDCD
ngc7318 338.99166666666667 33.965833333333336 J2000 V=10.3S 62442.5+ GABAA
ngc5466 211.36370833333336 28.534444444444446 J2000 V=9.2Pmax 11331 FBBBC
ngc5466 211.36370833333336 28.534444444444446 J2000 V=15.7Pmin 11331 FBBBC
abell1656 194.95291666666665 27.980555555555554 J2000 B=13.7Smax 83001 CAAEB
abell1656 194.95291666666665 27.980555555555554 J2000 B=16.5Smin 83001 CAAEB

Requested time
Total science exposure time on targets: hours (use WEAVE exposure time calculator).

Total observing time, including overheads: hours (use WEAVE total observing time estimator).


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Last modified: 09 January 2026

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