| From | To | Comment |
| 2003-02-21 | 2008-04-01 | start of operations until retirement of old CCD; the CCD had a strong glow scaling with exposure time, which can be removed with a suitable master DARK; therefore DARKs are included in the calSelector rules |
| 2008-04-01 | present | applicable after CCD upgrade; the new CCD has no such glow, therefore no DARKs needed for reduction |