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nobody

24 Mai 2015 04:20



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Este vorba despre aberatiile optice din tot lantul optic, care depind de raportul focal.

Vezi ce zice Televue: The faster the system the greater the need.

Vezi ce zice Baader: Astro-Physics: short focal ratios and higher magnification eyepieces where the prism errors would be more pronounced. However, adding any kind of Barlow element of 1.75x or higher will essentially eliminate the errors introduced by the prisms because the focal ratio that the prisms now see will be very long.

Vezi in imaginea de mai jos cum se comporta ocularele conventionale la f/5 si la f/10:
(sursa http://www.telescope-optics.net/eyepiece_aberration_2.htm)