STURDY DOBSONIAN BASE: The durable Dobsonian ... 12” PRIMARY MIRROR: Our Newtonian reflector telescope is equipped with a large, 12-inch primary mirror for stunning views of planets, galaxies ...

Kolkata groups create largest handmade telescope, low-cost, powerful, and easy to handle, for space research and education.

The 14.5- inch f/5 Dobsonian telescope was inaugurated ... The core of this telescope is its large parabolic primary mirror, which was painstakingly hand-ground and shaped in Kolkata," said ...