6ZULM !

[vmiro]

Kaze: "...Transparency = 6ZULM..."
Sta je ZULM, mjera providnosti neba (malo je glup prevod providnost al' et') ? Ocigledno da definise uslove za astronomsko osmatranje i bolje je sto je vece, koliko sam mogao da zakljucim!
Ima li neka preciznija definicija? Ja progooglah, al ne nadjoh nista posebno!

Poz
mIRO

[Sich]

A gde si nasao ti tu jedinicu? To je najverovatnije neka subjektivna skala autora, jer ako google nista ne nadje....

[vmiro]

ZULM - Zenith Limiting Magnitude

Sta ce 'U' u skracenici...doduse onda bi bilo ZLM...
Inace to sam pronalazio u par testova teleskopa na cloudy nights i nekim drugim sajtovima!

[gucic]

Mozda neki interni izrazi astro-poznanika...

[vmiro]

Vrlo vjerovatno, nema ga ni u astronomskoj enciklopediji!

Evo par primjera:

M13 revealed a couple outliers to direct vision at 240X and a number of stars with indirect vision at lower magnitudes (steady 4.0 magnitude ZULM city sky).

On a night of unsteady seeing, from an inner city site with a Zenith Limiting Magnitude (ZULM) of 4...

After a serious attempt at collimation, the following was seen on steady nights of high air moisture and a ZULM of 3.5 to 4.