WEAVE Open-Time Phase 1

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.

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 weave_open_time_supporting.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.

Upload a PDF file, of no more than 2 pages, and < 3 Mbyte, including a section providing a science case and a section justifying the observations requested. Figures and captions can be included.

In the section about observations requested, mention specifically what feature/s you want to measure, and how. Justify the focal-plane and spectrograph modes (listed below), the specifed SNR (and the units, e.g. per Å, or per pixel), the integration time, and the airmass, seeing/FWHM and sky brightness used for each calculation.

Low-resolution blue+red (LR_BR)
R ~ 2500 (LIFU), ~5000 (MOS/mIFU), wavelength ranges ~ 3660 - 6060 Å and 5790 - 9590 Å

High-resolution blue+red (HR_BR)
R ~ 10,000 (LIFU), ~20,000 (MOS/mIFU), wavelength ranges ~ 4040 - 4650 Å and 5950 - 6850 Å

High-resolution green+red (HR_GR)
R ~ 10,000 (LIFU), ~20,000 (MOS/mIFU), wavelength ranges ~ 4730 - 5450 Å and 5950 - 6850 Å

The resolutions quoted above are nominal. For most modes, the achieved on-sky centre-of-detector R are not far off nominal, but for MOS/mIFU modes, the blue-arm HR dispersers deliver R significantly less than 20,000.

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 magnitudes, and whether the provided magnitudes are for a point-source target (P) or extended (S, mag/arcsec²). Use this format, examples follow:

Target RA_J2000(deg) Dec_J2000 (deg) Band=Mag PROGTEMP OBSTEMP

NGC5466 161.95666666 -12.58163888 V=9.3-15.7P 11331 FBBBC
NGC4486HR 187.70583333 12.39111111 V=8.6S 61331 SACBC
NGC4486LR 187.70583333 12.39111111 V=8.6S 41331 XCDCD
virgo_cluster 186.87499999 12.72500000 V=8.6-12.7S 71331.5+ GABAA

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

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