I
purchased two 2.28” secondary mirrors and two 1.18” tertiary mirrors from Orion
Telescopes for $105.00 including shipping.
So, optics are complete: Primary,
secondary and tertiary mirrors – for a
total cost of $1005.00 This is about the
cost of a 12” monocular Dobsonian scope from a reputable manufacturer. If we
can keep construction costs under control, looks like the entire project may
wind up in the $1500.00 neighborhood.