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Alexandru Savin

17 Sep 2012 22:35


Aberatii cromatice obiective acromate

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Salutare!

Mi se pare un subiect cel putin interesant!

Pornesc cu un citat: ". The Sidgwick standard for classic refractors is to take the square of the aperture in cm and multiply it by 1.2 to get the minimum needed focal length in cm to have good control of chromatic aberration"

Apoi un tabel: http://cityastronomy.com/CA-ratio-chart-achro.jpg

Si in final pentru ''tocilari'' :)  http://www.telescope-optics.net/effects1.htm

PS: totul a pornit de la un obiectiv acromat Ø76 F5 la care eram curios cum sta cu aberatiile cromatice... macar teoretic daca practic nu-l posed....

Seara placuta!
A.