Landolt Standard PG1323 on the 1.3m Telescope
We have spotted a peculiarity in observing the Landolt standard PG1323.
It appears as though the light of a bright star (most likely Spica) outside the field of view
is not properly baffled, causing the raised level of the background, as
In principle, this should not affect the count rate in the standard
stars themselves, but, we do not recommend using this particular
standard for your observations.