AR90s tele­scope

Sky at Night Magazine - - FIRST SIGHT -

With a 90mm aper­ture, clear multi-coated achro­matic op­tics and 500mm in fo­cal length (f/5.5), the guide tele­scope pro­vides good star im­ages. It in­cor­po­rates grad­u­ated in­ter­nal baf­fles for bet­ter con­trast, a fixed dew shield and a rack and pin­ion fo­cuser. A 4-inch wide clamp­ing ring holds the tube steady, help­ing to re­duce un­wanted flex­ure.

Newspapers in English

Newspapers from UK

© PressReader. All rights reserved.