OM UV Photometric Calibration using LBB 227

CALThe primary goal of the observation of the white dwarf LBB 227 is toestablish the zero point calibration of the UV filter. Secondary calibrationitem is the measurement of the instrument PSF in the UV filters, which isaccomplished by placing a fast mode window on the white dwarf. The target countrate and the PSF shape is studied under different window sizes. Initially thebasic characteristics of the grism are measured, which are the position of the 0and 1 order spectra and a coarse wavelength scale calibration. In laterobservations deeper grism exposures are aimed to measure throughput and PSFshape. The estimated OM overhead time is: 5.4/3.1 ksec for initial/follow upobservations. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]