Fixes #39: Acquisition entry: When selecting a filter for the first entry all of my filters are available to choose from (this is fine). Subsequent new entries contain all known filters and this makes selection of filters quite difficult.
Fixes #39: Acquisition entry: When selecting a filter for the first entry all of my filters are available to choose from (this is fine). Subsequent new entries contain all known filters and this makes selection of filters quite difficult.

astrobin/astrobin,astrobin/astrobin,astrobin/astrobin,astrobin/astrobin