Shkala zvezdnyh velichin
Logarifmicheskaya shkala, ispol'zuemaya dlya sravneniya osveshennostei (potokov izlucheniya) ot razlichnyh ob'ektov ili opredelennyh ih chastei. Za osnovanie logarifma prinyato chislo 2.512..., desyatichny logarifm kotorogo v tochnosti raven 0.4. Edinicei stupeni sluzhit "1 zvezdnaya velichina"; oboznachaetsya 1m. Vozrastanie na 1m sootvetstvuet umen'sheniyu osveshennosti v 100.4=2.512... raz (podrobnee sm. zvezdnaya velichina). Nachalo otscheta (nul'-punkt shkaly zvezdnyh velichin) ustanavlivaetsya po special'no vybrannym zvezdam, nazyvaemym standartami.Surdin V.G., GAISh, Moskva
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Shkala zvezdnyh velichin
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