GMOS SV program 78

	Status: in preparation Data link: not yet available Assessment: not yet available

Title:	Gemini Deep Deep Survey - Nod-and-Shuffle Observations
Modes:	MOS used in Nod-and-Shuffle mode
Additional instrument verification:	Data reduction pipeline for MOS Nod-and-Shuffle data. Mask designs for Nod-and-Shuffle.
Telescope verification:	Acquisition and guiding with GMOS for tested modes. Nod-and-Shuffle performance. Stability of guiding over long periods of time and large hour angles.
Proposed observing sequence:	Multiple 15-cycle exposures with sub-integration time of 60sec.
OT program file:	Not yet available
Science background:	The Nod-and-Shuffle SV observations will concentrate on one of the fields of the Gemini Deep Deep Survey. A total of 5 nights are scheduled for this program in order to demonstrate the capability of obtaining very deep spectroscopy with GMOS in Nod-and-Shuffle mode. It is expected that the data are deep enough to obtain 50 redshifts for galaxies with redshifts between 1 and 2.
Target(s):
	Object	RA (J2000)	Dec (J2000)
	GDDS 22h field	22:17:41	00:15:20
Observing condition constraints:	image quality: 80%-ile sky transparency (clouds): 70%-ile sky transparency (water vapour): Any sky background: 80%-ile max air mass: 1.5
Instrument configuration:	MOS Nod-and-Shuffle, R150, CCD binned 2x1
Observing time requirements:	A total of 100ks open shutter time is needed
SV team member(s) responsible for assessment:	Roberto Abraham and the GDDS team

Last update August 19, 2002; Inger Jørgensen