8/22/2023 0 Comments Largest dobsonian telescope![]() You can have a wonderful amplifier, but if you listen through cheap loudspeaker, the sound will not be good. One could compare eyepieces to the loudspeaker in a HIFI system. Still they are like a tenth of the price of a telescope, and it is a very wise investment to take the best possible eyepieces. The price of a Nagler and Ethos eyepieces is between 5 to 15 times the price of a Ploosl eyepiece, but the difference in the view is striking. You see like if you were in the sky, not like when looking through a keyhole. Ethos eyepieces are the latest evolution of high quality eyepieces with an apparent field of view of 100°. ![]() Their field of view is typically 50° whereas the Nagler eyepieces are high end eyepieces with a field of view of 82°. The Ploosl eyepieces are good starter eyepieces which are normally sold with the telescopes. (*) The eyepieces are the optics through which one looks through the telescope. We have the largest and best telescopes in Chile for the touristic observation of the sky The sky as seen without dome at the upper photo and inside a dome at bottom, make your choice. The real reason why we don't have domes at SPACE is the following one : Because thermal problems, most modern domes are equipped with a refrigerated floor allowing to keep the temperature low during the day, and most of them open as much as possible because the ideal dome is no dome. Large telescopes are normally placed in a dome because it is impossible to move them at the end of the night, or because they are placed in a site which is lit by city lights for example. Since it rarely rain in San Pedro and since there is normally no wind at night and it is much better to observe in the open air than from a dome. Mamalluca is station I04 because some amateurs have at time made some observations from there. These telescopes work in an automatic mode during the night, and are protected by a shelter during the day. At the profesionnal level, our observatory is station "I10" of the International Astronomical Union, and several asteroids have already been discovered from here, but with telescopes which are not the ones used during the tours. These are really not telescopes for visual observing.Īn observatory is a place where people observe the sky. And if they could be fitted with an eyepiece, the minimal magnification would already be around 1200 times, showing only a very small part of any celestial object. Moreover, these telescopes are not equipped for visual observing.Taking the price of the instrument, in the several hundred of millions of euros, plus the annual charges for the 250 people working there, gives such a high price tag. Large observatories cost several euros per second of observing time.On these telescopes, the pression reaches up to 8 (this means there are 8 times more people asking for observing time, than available time), so while it is impossible to accept all the profesionnals wanting to use the telescope, it is not possible to use it for touristic observations. This observatory is reserved for profesionnal astronomers, several months in advance, and to get already half a night for a program is quite good, since there are hundreds of astronomers requesting the use of the telescopes.The closest profesionnal observatory from San Pedro is at more than 500km.Unfortunately, this is completely impossible. We frequently have people who think we organize tours which allow to observe through one the giant telescopes of Chile or who think that the visit of these observatories include the possibility to look through one of the large telescopes.
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