... Zodiacallight restriction constraint is not currently used. ... 10-20 degrees from OB2) - Guide stars - Zodiacallight - Assigning a roll for all ... six years - Guide stars and Zodiacallight Additional Scheduling studies: - Studies ...
... FITS files - Supports spatial and spectral description of: Target Stellar background - Provides Time-Dependent Models: UV Airglow ZodiacalLight Earthshine User Option to select a time of year for information User option to specify: Max ZodiacalLight Max ...
... For instance, if a 26.9 magnitude A star were observed under high zodiacallight and high earth shine, the exposure time required to reach signal-to-noise of 10 with CCD clear would be twice as long as the one stated in Table 5.2 . ...
... likely affected by two main sources of background: the Zodiacallight, which is spatially dependent, and the thermal emission ... The model adopted for the Zodiacallight is based on COBE data at about 45 degrees ecliptic latitude. ...
... Three pointings are selected: ORBIT-POLE, ANTI-SUN and a low-zodiacal-light blank spot. ... was observed with multiple filters to determine the wavelength at which the HST thermal emission exceeds the zodiacallight ...