Overview:

Filters: $B + V,I,uvby$

Field: NGC$\,$6397 at : $(\alpha, \beta, 2000) = (17:40:41.3; -53:40:25)$

Exposures: Run series of eg.: 19 x 40sek (for the faint stars) and 1 x 5sek (for the bright stars). Check focus and position on CCD of a few reference stars on a regular basis during the night.

Phot. Calibration: Observe 5-7 std. fields on several different nights, preferably 3-4, with a spread in airmass.

Report: After each night prepare a report with relevant information on weather, seeing and amount of data, cluster, photometric and other information of interest.