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Frequently Asked Questions
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Q1: Is the viewfinder right angle correct image (RACI)? What type of glass is the mirror? (Bk7 or Pyrex) and what are the mirror coatings?
A: The viewfinder is a standard Bk7 glass and has no multicoatings.
Q2: 1. what type of glass is the main mirror? 2. what type of coating on the main mirror? 3. what is the OTA weight?
A: The Main mirror is made of a Pyrex glass. The glass is coated with aluminum coatings with a magnesium fluoride coat to provide bright images full of detail. The OTA weighs 60lbs.
Q3: Is the mirror center-marked for collimation?
A: The primary mirror is marked for collimation on the Zhumell Z12 Deluxe Dobsonian Reflector Telescope.
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