Pentax 10 - Manual (Page 15)

15
Holding the Eyepiece in Place
The clamping screw can be inserted in any of three threaded holes in
the focuser. I don’t normally use it, as the nylon friction screw in the
focuser is more convenient. Set it to be just snug for your eyepieces.
Accomodating Other Eyepieces
Balance Balance Balance Balance Balance
Experienced observers may already have a preferred set of eyepieces.
Most of these can be used with the Teleport, though some may impose
problems. Wide variation in weight effects the balance, as with any
small scope. The Teleport is supplied with three balancing weights that
can be attached to the mirror cell on the bottom of the scope or to the
secondary cage on the top. For heavier eyepieces, you may need to place
one or more of the counterweights on the mirror cell. For very light
ones, you may need to place one or more on the secondary cage.
If the scope is still unbalanced, you can
increase the friction damping of the altitude
bearings by adjusting the screws above of the
altitude rings (Fig 24) wth the allen wrench.
Avoid excess tightening which would inter-
fere with the smooth easy motion that is part
of the joy of using the Teleport.
Focal Plane Location Focal Plane Location Focal Plane Location Focal Plane Location Focal Plane Location
Most good eyepieces have a standard focal plane location, close to the
surface that seats onto the focuser. Unfortunately, some designs may
vary widely from this, requiring a large change in the focuser position.
The Teleport focuser has, of necessity, a limited range of travel. Addi-
tional out-travel can be effected by sliding the eyepiece partway out and
locking it with the screw.
If a 1.25” eyepiece you use frequently requires a lot of out-travel,
consider using an adapter that extends it. Also, a recessed adapter may
allow a 1.25” eyepiece to go farther in than the focuser top surface.
Within limits, custom adapters are possible in order to parfocalize
unmatched eyepieces. If you have a particular problem here, contact me
for a quote.
It is also possible to adjust the location of the Teleport’s focal plane in
relation to the focuser. This is done by adjustment of the strut posi-
tions, effectively changing the length of the scope. You should do this
only if you find it necessary for your overall set of eyepieces. It requires
time and care, and is not practical as a routine adjustment. If you are
certain you want to do this, see “Service” on page 22.
Fig 24: adjusting
friction damping