CCD Messier marathon

At the Nyrola Observatory we observed 82 Messier objects (all but one observable at the location) in a single night of March 24/25, 2001 with a 16-inch Meade LX200 telescope working at f3.3 and a SBIG ST7E CCD-camera.

Each object was imaged with 3x3 binned 60 second unfiltered exposure except a few very bright objects that were imaged with shorter exposure to avoid saturation.

Arto Oksanen and Harri Hyvönen Nyrola Observatory, Finland