8
Match stars depicted on the reticle
with the celestial objects in the sky,
using azimuth (2) and latitude (3)
adjustment knobs and rotating the
polar axis finder scope around its
axis.
Level the Dec. axis (put it in the
horizontal position) and by rotating
R.A. setting circle put it in a «0»
(zero) position (see picture).
For the Dec. setting circle calibration
find bright star from the star atlas,
and bring selected object to the
center of the telescopic field of view.
rotating Dec. setting circle, set the
Declination of the star observed.
Correct Dec. setting circle calibra-
tion by selecting next star.
CAlIbrAtING tHE SEttING CIrClES
R.A. and Dec. axes have setting circles, which enable observer to
locate an object in the sky by its celestial coordinates – right ascension
(R.A.) and Declination (Dec.).
Calibration of setting circles is done after polar alignment of the
telescope.
