Mounting Tele Vue Telescopes on PORTA Mount
If you are mounting a Tele Vue telescope onto the Porta Mount, install the adapter
block AVT-1011 on the telescope mount ring or adjustable dovetail-balancing bar.
The AVT-1011 is included with Tele Vue scopes sold with Porta Mount and is also
available from your Tele Vue dealer.
From behind the telescope, rotate the ring mount so the adapter threads are on
the right. Attach the adapter block with notch facing up.
Mounting Vixen Field Scopes on PORTA Mount
If you are mounting a Vixen Geoma field scope onto the Porta Mount, install the
adapter block AVT-1011 on the base of the field scope.Lay the field scope on its
side with the eyepiece end to your left and objective lens to the right. Place the
smooth face of the adaptor block (notched edge up) against the mounting base of
the field scope. With one hand, align the left-most hole on the adapter block with
the left-most threaded hole on the field scope base. With the other hand,insert one
of the supplied socket head cap screws (small screws) through the hole and drive it
in with the supplied Allen key. Tighten firmly.
Follow the instructions in the Preparation section of the Porta Mount manual to
setup the tripod and mount the field scope. Then loosen the silver locking thumbscrew on the spotting scope and
rotate the scope body so that the eyepiece is facing up. In order to get the smoothest motion from your Porta
Mount, follow the directions in the Adjustments section of the Porta Mount manual to adjust the
altitude/azimuth slewing motion.
Tips to prevent the field scope from slipping off the adapter block:
•Make sure the socket head cap screw on the adapter block is tight.
•Adjust the tension on both axis (Adjustments section) so the field scope moves easily without binding and
stays in position when you remove your hand. Photographers should do this adjustment with their imaging
equipment attached.
