Observation Session – 21 May 2011

Location: Cévennes National Park, France

Session duration: 2 nights

Sky conditions: Moderate turbulence, seeing ~6/10

Instruments:

  • 7×50 binoculars
  • 250mm Dobsonian telescope
  • 150mm Newtonian telescope

Targets:

  • M57 (Ring Nebula)
  • The Moon
  • Betelgeuse
  • Rigel

Observation notes:

Transparency improved after midnight and allowed longer visual work on faint deep-sky targets.

The larger telescope resolved dense clusters cleanly, while the refractor was used for wider fields and comparison views.

During the session, multiple clocks disagreed by several minutes without any clear explanation, which complicated the timing notes.

Members present: Maxime Dallois, Adama Traoré, Ayoub Berrabeh, Lucille Godefert, Antoine Delorme, Julien Bertaud