Messiermarathon

Under a Messier Marathon is defined as a contest in which the participants all 110 astronomical objects in the Messier catalog with the help of a telescope during a single night - must visit - mainly galaxies, star clusters and nebulae. A Messier Marathon can be done because of the seasonal visibility of different objects only in the spring ( around the end of March, beginning of April).

May In the classical form of competition for just a manually controlled telescope used, d, h, without the frequent today, computerized GoTo mounts. In an attenuated variant is declared the winner, who discovered within a specified period of time ( about 2 hours) as many of the listed objects.