OAC in general:
Astronomical Observatory of Capannori (OAC) is an observing station
located on the Gallonzora Mountain, in a panoramic place without
too many artificial lights, near the village of Vorno, in the countee
of Capannori, Tuscany region, central Italy.
The observing station of OAC was officially inaugurated on June12th
2010 by various members of the administration of the municipality
of Capannori; nevertheless the observatory was
(at least in part) working since 2008.
The scientific management of OAC is exclusively performed by the
'Istituto Ricerche Fotometriche' (I.R.F.) whose aims are carrying
out scientific research in the fields of astronomy and environmetrics;
more aims are public outreach and educational activities in the
two above mentioned fields.
An important ideal inspirating the activities of OAC is the freedom
of scientific research, teaching, and autonomy in scientific management,
as stated also by thearticle n° 33 of the Italian Republic
Technical data about OAC:
long = +10°31'18.10" E
lat. = +43°47'38.83" N
alt. = 236 meters (a.s.l.)
Night sky zenith brightness:
median night sky zenith brightness (measured in many no-Moon nights
with an Unihedron SQM-L sky quality meter) at OAC is about 20.1
First order atmospheric extinction coefficients:
The median first order UBVR bands atmospheric extinction coefficients
at OAC (measured in many clear nights with our two Optec SSP-5A
photoelectric photometers) are as follows:
median k'U = 0.67 mag/airmass
median k'B = 0.36 mag/airmass
median k'V = 0.23 mag/airmass
median k'R = 0.18 mag/airmass
Second order k"bv atmospheric extinction coefficient:
latest k"bv = +0.003
the seeing at OAC shows a strong correlation with the time in each
night, being worst (~ 3 arcseconds) at the very beginning of the night,
and being best (namely ~ 2 arcseconds or better) at late night.
Sometimes, at very late night before dawn, we get even 1 arcsecond.