ASA Cassegrain / Ritchey-Chrétien

3 topics in this forum

1. Spectroscopy: RC or Classical Cass?

   By Chocolate Elephant, September 1, 2013
   • 2 replies
   • 3k views
   • 
   • astrobry
   • February 4, 2018

2. Other 400C users

   By nakbrooks, September 7, 2016
   • 4 replies
   • 1.3k views
   • 
   • nakbrooks
   • September 7, 2016

3. How to collimate 400mm classical cassegrain

   By nakbrooks, November 12, 2013   

   • Collimation
   • 2 replies
   • 4.7k views
   • 
   • nakbrooks
   • November 19, 2013