-----------------------------------

Blakut

03 Oct 2010 17:04



-----------------------------------

Nu o iau in nume de rau, banuiam ca e ceva legat de campul aparent si de cel real. Vroiam o explicatie mai clara de la cei care se pricep ;).

De exemplu, daca am doua oculare, cu campul aparent de 60 respectiv 80 de grade si le montez pe rand pe acelasi telescop, ele doua avand aceeasi distanta focala, cum "se vede" diferenta, de exemplu uitandu-ma la Luna? Cum pot indesa mai multa imagine in acelasi camp? Sau pur si simplu campul e mai mare la cel de 80 si cu asta basta?

Asa se pare ca e:
http://upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Fields_of_view.jpg/800px-Fields_of_view.jpg

Simulation of views through a telescope using different eyepieces.The center image uses an eyepiece of the same focal length as the one on the left, but has a wider apparent field of view giving a larger image that shows more area. The image on the right also has a shorter focal length, giving the same true field of view as the left image but at higher magnification.

Se pare ca asa e. 

PS: pentru cine ma indruma sa mai citesc o carte de astronomie, multumesc mult, citesc carti de astronomie, vroiam o explicatie punctuala, nu o trimitere la manual. Fara link...