ASTRO-PHYSICS Mach1GTO, Руководство пользователя, Страница: 14 / 31

15” ASTRO-PHYSICS DOVETAIL (DOVE15) FOR 15” SLIDING BAR (SB1500)
The 15" version of our dovetail plate is suited for the 130 f8 StarFire
EDT, 155 f7 StarFire EDFS, Takahashi scopes and other instruments of
similar size. The two knob assemblies each feature a brass pin with a
tapered end to hold your sliding bar firmly without marring the aluminum.
Use with the 15" Sliding Bar (SB1500), which is sold separately (
NOT for
use with Losmandy “D” plates). Also makes a great accessory plate
when used with either the 900RP, the FP1500, the FP1800 (with rings
mounted to inside holes) or another DOVE15.
Attach with four 1/4-20 x 1/2” flat head socket cap screws.
8.5” DOVETAIL FOR LOSMANDY D SERIES PLATE (DOVELM2)
This Astro-Physics plate attaches to the 400, 600E, 900, 1200 and Mach1GTO mounts. If
you already own one of the Losmandy DAP series (fits Astro-Physics refractors), DC series
(for Celestron 8" 9.25” or 11" SCTs) or DM series (for Meade 8" and 10" SCTs) plates, you
should consider this plate or the longer DOVELM16S. For larger size SCT’s we recommend
the longer DOVELM16S – see below.
Note that the two larger bolt-hole patterns are offset from the center. This allows you to
position the plate either forward or backward depending on the balance point of your
telescope. Attach this plate with four 1/4-20 x 5/8" socket head cap screws.
16" DOVETAIL FOR LOSMANDY D SERIES PLATES (DOVELM16S)
This Astro-Physics plate attaches to the 900 and Mach1GTO
mounts. If you already own one of the longer Losmandy DAP series
(fits larger Astro-Physics refractors), DC series (for Celestron 8" or
9.25" SCTs) or DM series (for Meade 8", and 10" SCTs) plates, this
is the mounting plate for you.
Note that the bolt-hole pattern is offset from the center. This allows
you to position the plate either forward or backward depending on the balance point of your telescope. AAttach this plate with
four 1/4-20 x 7/8" socket head cap screws.
NOTE ON ATTACHING THE ABOVE MOUNTING PLATES:
Three of the components listed above have six mounting holes that match the six screw holes that hold the D
ECLINATION
H
UB
P
LATE
onto the hub of the Mach1GTO ’s Dec axis. (FP1800, 900RP and Q4047) We recommend that you use only four of
these holes to mount your plate. Remove four of the screws that hold the D
ECLINATION
H
UB
P
LATE
in place. They will be
replaced by the four screws that hold the mounting plate down. The remaining two can then still hold the D
ECLINATION
H
UB
P
LATE
in place on the D
ECLINATION
A
XIS
H
UB
while the mounting plate is being attached. The four remaining holes are more
than adequate to hold the plate securely on the mount. It really doesn’t matter which four you choose, but the two screws
left to hold the D
ECLINATION
H
UB
P
LATE
in place should probably be opposite each other.
You will also notice that in addition to the four holes that make up the inside pattern on the D
ECLINATION
H
UB
P
LATE
, there is
an extra hole that matches an extra hole found in both the Losmandy style plates (DOVELM2 and DOVELM16S). This fifth
hole is not needed if the four regular holes are in use. However, if you lose a mounting screw, it can be used in place of the
two normal holes on that end of the plate to make a very solid 3 point attachment.
Assemble Counterweight Shaft
IMPORTANT: Always attach the counterweights before mounting the telescope to the cradle plate
to prevent sudden movement of an unbalanced tube assembly, which may cause damage or injury.
Remember counterweights are heavy and will hurt if they fall on your foot.
1. Thread the C
OUNTERWEIGHT
S
HAFT
onto the Dec. axis. Be careful to NOT cross-thread the shaft in the adapter!
2. Remove the C
OUNTERWEIGHT
S
AFETY
K
NOB AND
W
ASHER
(or the one-piece Safety Stop if you are using the 1.875”
diameter shaft) from the base of the C
OUNTERWEIGHT
S
HAFT
. Add sufficient C
OUNTERWEIGHTS
(purchased
separately) to the C
OUNTERWEIGHT
S
HAFT
to balance the telescope you intend to use. Loosen the counterweight
knob and hold the counterweight with the knob pointing downward so that the brass pin will move from the center
opening allowing the counterweight to slide into position. Always use two hands to attach or move the
counterweights on the shaft. It is advisable to have the counterweight knob pointing down toward the pier. This
will minimize the chance of accidentally loosening the counterweight during the observing session.
3. Reattach the C
OUNTERWEIGHT
S
AFETY
K
NOB AND
W
ASHER
to the end of the C
OUNTERWEIGHT
S
HAFT
. This will help
to prevent injury if someone accidentally loosens the C
OUNTERWEIGHT
K
NOB
.
NOTE: A firm tightening of the C
OUNTERWEIGHT
K
NOB
will not damage the surface of the C
OUNTERWEIGHT
S
HAFT
. The pin that
tightens against the stainless counterweight shaft is constructed of brass. Likewise, the bronze sleeve that has been press
fitted into the center of the C
OUNTERWEIGHT
will prevent marring of the shaft as you move the C
OUNTERWEIGHTS
up and down.
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