Single mirrored Dobsonian Telescopes
This telescope is built around a 33 cm f/4.8 mirror, made by Jan van Gastel, equiped with ServoCAT and Argo Navis. (Jan van Gastel Mirrors). This is an example a Dobsonian telescope with almost perfect optics. The mirror has an amazing 0.987 Strehl ratio (click here for an optical report). This is almost perfect and it is no wonder that it provides very sharp star images.
At the other end of the spectrum, this is a telescope build around a 18 inch f/4.8 Mike Lockwood mirror.
Or with a 20-inch f/4.0 Orion Optics mirror set....
Different Dobsonian TelescopesOver the years I have experimented with different designs, as shown below.
Like this one, built around a 16 inch f/4.5 Orion Optics mirror set. Bob Hogeveen is currently the owner of this telescope.
Occasionally a different design presents itself, such as in the telescope below, which is built around an 8 inch f/6.0 mirror, made by Jan van Gastel (Jan van Gastel Mirrors). This smaller telescope is very stable and is very nice to view the moon.
Or one that is suited for traveling, compact and easily fitting in a travel bag.
In yet another different style I have also built these telescopes below. The left telescope harbors a 16 inch f/4.5 and the right telescope a 13 inch f/5.0 mirror.
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