Fotografovani Mesice / Photography of the Moon

orientacni expozicni casy pro fotografovani Mesice v zavislosti na svetelnosti objektivu, citlivosti filmu a fazi Mesice nebo stupni jeho zatmeni

approximate exposure time for fotography of the Moon depending on focal ratio, film speed and moon phase or eclipse degree

vychozi vzorec: t = F² / (I 2^Q)

t ... expozicni doba [s] (exposure time [s])
F ... svetelnost objektivu (focal ratio)
I ... ISO citlivost filmu (ISO film speed)
Q ... jasovy exponent (brightness exponent)

• L=0 ... velmi tmave zatmeni; Mesic je temer neviditelny, zvlaste uprostred zatmeni / Very dark eclipse. Moon almost invisible, especially at mid-totality.
• L=1 ... tmave zatmeni, sede nebo hnedave zabarveni; detaily rozlisitelne s obtizemi / Dark Eclipse, gray or brownish in coloration. Details distinguishable only with difficulty.
• L=2 ... tmave cervene nebo rezave zabarveni; velmi tmavy stred stinu, zatimco vnejsi okraj stinu je pomerne jasny / Deep red or rust-colored eclipse. Very dark central shadow, while outer edge of umbra is relatively bright.
• L=3 ... cihlove cervene zatmeni; stin zatmeni ma svetly nebo zluty okraj / Brick-red eclipse. Umbral shadow usually has a bright or yellow rim.
• L=4  velmi jasne medene cervene nebo oranzove zatmeni; stin zatmeni ma namodraly nebo velmi jasny okraj / Very bright copper-red or orange eclipse. Umbral shadow has a bluish, very bright rim.