The following document lists the file abstract/PHT_CAL_P1BEAM01.abs
from catalogue VI/111.
A plain copy of the file
(without headers/trailers) may be downloaded.
The accurate knowledge of the beam profiles is a prerequisite for the calibration of extended sources of centre point source observations. It is not possible to cover all filter/aperture combinations to assess the beam profile shape. Based on statistics of the actual science observations the key wavelength/aperure combinations are: 11.5 micron/52" 11.5 micron/180" We will scan the aperture in Y and Z using a point source (star) in order to determine the aperture profile for the two combinations History 15/12/97 Creation database for 180" scan (RJL) Must be executed on 20/01/98 because of fixed position angle .OTT 9977 sec .TDT 11497 sec