As a continuation of the previous article (Cooling telescope mirror) I report the results of some fluid dynamics simulations conducted on a control volume equal to that contained within the primary box.
The next step in the design phase and determination of the appropriate position of the various baffles along the optical path, It consists in the realization of real shielding elements. As it said until now, It is particularly easy to apply to your telescope, if the study for the positioning of the baffles has been made in a phase of
POSITIONING OF SETTI Septa in the main pipe: Once the length of the tube, you can begin to determine where they must be placed the internal baffles, to be able to block the off-axis light entering the telescope, and reflected or scattered from the inner surfaces, before this I can get on the primary mirror or focal plane.
One of the aspects that can be taken to enhance the performance of a telescope, It is linked to the undesired phenomenon of scattered light, due to reflection of the radiation that comes from external sources by the surfaces that precede the telescope detector (or eyepiece), which are characterized by a certain surface roughness (from
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
A battery to power the fan aspirator of "turbulent boundary layer" present on the surface of hot primary mirror of a dobsonian telescopes, it is essential for any amateur astronomer wishing to maximize the performance of its instrument. An amateur astronomer "visualist" , which therefore does not use hardware photo / digital, You do not generally need to control
Collimare a laser collimatore
One of the activities that every amateur should run it on your telescope, to take advantage of a powerful tool, It is the collimation of the optical. To do this, there are several techniques, that exploit various devices, like a needle pierced the door or a collimator Cheshire or Autocollimator or through the Star Test, or by using a laser collimator.
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