OTF observing time estimator

Enter your OTF mapping parameters and the the following information will be calculated:

The time it will take to complete one coverage of your map area,
The time between references (TBREF on the telescope control computer),
and the rms noise level after one coverage of the map area is done.

LX (map size along x-axis in arcminutes)	LY (map size along y-axis in arcminutes)
DY (y-axis distance to move before starting next row in units of the telescope beam size)	TSAM (time between dumping spectra in a row; equals the integration time on each position in one map in seconds)
RAMPX (x-axis ramp size in units of the telescope beam)	RAMPY (y-axis ramp size in units of the telescope beam)
NBREF (number of rows to observe between references)	NCALS (number of rows to observe between calibrations)
TSYS (a typical T(sys) value for the frequency you will observe; typical values are found below)	delta_f (the channel width you want in kilo Hz)

The table below lists recommended Tsys values to estimate observating time as a function of frequency. These are typically values averaged over the transit of a source (25 < el < 75 degrees). On cold, dry days, lower values of Tsys can be achieved.

Frequency (GHz)	Tsys (K)
86	225
90	225
95	225
100	225
105	200
110	250
115	600