Vixen MINI PORTA, Instruction Manual, Page: 15 / 16

Observation
Observation
①
②
③
④
Point your
PORTA
II
/ MINI PORTA
telescope
at the Moon by slewing the telescope tube by
hand. Locate the Moon in the finder scope (or
the dot finder). Center the Moon in the finder
using the slow motion handles.
Look through the telescope with an eyepiece of
low magnification and the Moon will be there.
Focus the telescope on the Moon by turning the
focus knob.
Try using a different eyepiece to change the
magnification.
The Moon (stars and other celestial objects as well)
appears to move out of the field of view while
looking through the telescope due to the Earth’s
rotation. The higher the magnification, the faster
the movement. Turn the slow motion handles
on the
PORTA
II
/ MINI PORTA
mount to bring the
Moon into the center of the field of view again.
①
②
③
④
With the finder scope aligned and the eyepiece attached, you are ready to use the
PORTA
II
/ MINI PORTA
telescope
for your celestial observation in the night sky. Let’s begin by observing a bright and easy-to-find object, the Moon,
and then proceed to finding planets and dark objects easily visible at moderate power.
Above : What you can expect to see when viewing at a different magnification.
Observing the Moon
Focus Knob Focus Knob
Eyepiece
Setscrew
Eyepiece
Setscrew
Eyepiece Eyepiece
Altitude Handle Altitude Handle
Azimuth Handle Azimuth Handle
Finder Scope’s Field of View Finder Scope’s Field of View
Telescope’s Field of View
Telescope’s Field of View
Telescope’s Field of View
High
Magnification
低倍率
Drift out of
the field of
view.
Bright and
easy-to-find
objects
Moon
Jupiter
Saturn
Venus
Mars
Nebulae and
Star Clusters
Dark celestial
objects
Moon
Jupiter
Jupiter
Saturn
Saturn
Venus
Venus
Mars
Mars
Magnification at 50x Magnification at 100x
15