Thread: Test your scope
View Single Post
  #18  
Old 20-01-2020, 06:34 PM
The Mekon's Avatar
The Mekon (John Briggs)
Registered User

The Mekon is offline
 
Join Date: Jul 2007
Location: Bowral NSW
Posts: 828
Quote:
Originally Posted by Wavytone View Post
Close doubles - with dissimilar brightness - offer the ultimate test. Start with the WDS catalog.

Sirius, Antares, Acrux just for starters. The one that will really test the scope is Rigel - small scopes under 10” won’t split it.
Sirius, Antares - yes but Acrux?? Perhaps you mean Adhara? As for Rigel, I reckon in good conditions a 50mm will do it!
Reply With Quote