380.C-0449B


McCaughrean/ King/ Close/ Scholz/ Lenzen/ Brandner/ Lodieu/ Zinnecker

FORS2

Last update of this page: Wed Oct 7 15:41:04 2009

Run State: COMPLETED

USD review status:
O.K.!

Pre-Imaging? Special-Calibration? Time-Critical? ToO/GTO/Large program? Carry-Over?
Special
Calibs
Time
Critical
SHORT

Special Remarks:
Twilight I-band flats required in FORS2 SR/200kHz,1x1 read-out mode

Abstract for MTS:
This long-term FORS2 program monitors the orbital motions of Eps Indi Ba,Bb. The system has a very high proper motion of 4.7 arcsec/yr. Four epochs of observations are needed in P80, spaced roughly by 1 month throughout the period when the target is available (Oct-Feb). A dithered set (10 x 20 secs) of FORS2 I-band images is taken at each epoch: the SR collimator is used to get a wide field-of-view, with the 200kHz,1x1,low read-out mode to simultaneously get best possible spatial resolution. Target coordinate is an empty point in the sky, roughly where Eps Indi B will be in late 2007, halfway through a five year monitoring campaign. Plan is to use same basic pointing for all observations, to ensure same net of field stars is seen throughout. Waiver Requests =============== 380.C-0449B.02.WAV: waiver granted 12/07/07 Request to use non-standard 200kHz,1x1,low read-out mode of FORS2 in SR optical mode. Time-Critical Aspects ===================== PI requires 4 observations roughly evenly spaced throughout P80, i.e. ideally once per month while target is available (Oct-Feb). As this clearly depends on schedule, weather, etc., spacings of 0.5-1.5 months would be ok. IMPORTANT: These windows are designed to allow for flexibility and thus they overlap. However, in general, it makes no sense to execute the OBs for two epochs on the same night or within a few days. Please try and space the epochs evenly throughout P80 as far as possible. Special Calibration Information =============================== Twilight I-band flats required in FORS2 SR/200kHz,1x1 read-out mode: corresponding OBs provided.

Run status page 380.C-0449B

README of this run:

Web version of approved README readme_80044901.html