John Dobson (1915-2014), It is known around the world for his astronomical work "missionary" in regard to the popularization of astronomical observation of the sky […]
SOLIDITY’ = PREROGATIVE ESSENTIAL OF LATTICE The need for unity in the transportability of Dobson telescopes (characterized by a reduced frame ingeniously essentials despite the large aperture of the primary mirror Newton) has meant that the optical tube of such instruments, must obviously having a larger diameter for just contents the big primary mirror, It could be replaced
In support of the fact that the balance of light Dobsonian (and not), It can be done dynamically as an alternative to the use of counterweights, I do narrate here my recent experience to rebalance with elastic rubber my Dob250F5, After adding optical finder 6×30 weight of 265g. In order to fully understand what the physical principles and
My Carry a positive experiment in practical balancing the telescope Dobson, with the use of tension springs in replacement of heavy counterweights. A Dobson telescope behaves in practice as a first class lever, that is, as a classic balance with two arms and central hub: The arm, We are saying A (see figure); It goes from the cell of the
Micro travel Dobson 130 F7 size "A4" ( year 2008 )
The obvious question that arises is: “What's is the point..or the "sense"” to build a micro dobson like this? The sense is just that… That such a small instrument and light and without a tripod, allows you to observe when walking up hill or mountains, or on other occasions, when You can't take anything bulky as a classic little telescope
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