How much would it cost to build a 40 inch dobsonian telescope and can anyone send me an example of an image taken out of such telescope? (And same question for a
20"f/3 and 25"f/3 Dobsonian Telescopes: Summary Description
I make telescopes. Here's my 20"/0.5-meter, largest I've built to date. : r/space
Imaging Planets with the 20-inch Aperture Telescope – Aperture Telescopes
Obsession Telescopes / Telescopes / 20" Classic
Obsession Telescopes / Telescopes / 20" Classic
What can I expect from a 20" Dobsonian? - Major & Minor Planetary Imaging - Cloudy Nights
UL20
Best 20" Dobsonian Telescope — New Moon Telescopes