Suggested Accessories - Orion SkyView Deluxe 9400 Instruction Manual

What if you need to aim the telescope directly north, but at an
object that is nearer to the horizon than Polaris? You can't do it
with the counterweight shaft pointing down as pictured in Figure
1. Again, you have to rotate the scope in R.A. so that the coun-
terweight shaft is positioned horizontally. Then rotate the scope
in Dec. so it points to where you want it near the horizon.
To point the telescope to the east or west, or in other directions,
you rotate the telescope on its R.A. and Dec. axes. Depending on
the altitude of the object you want to observe, the counterweight
shaft will be oriented somewhere between vertical and horizontal.
The key things to remember when pointing the telescope is that
a) you only move it in R.A. and Dec., not in azimuth or latitude
(altitude), and b) the counterweight and shaft will not always
appear as it does in Figure 1. In fact, it almost never will!

6. Suggested Accessories

Call our Customer Service department at (800) 447-1001 for
availability and current prices. Mention the stock numbers
indicated in the parentheses.
1/4"- 20 Adapter (#3800)
This accessory bolts to the top of the equatorial head and
provides a threaded post on which to mount a camera or tel-
escope that utilizes a standard "quarter-twenty" thread.
Declination (Dec.)
setting circle
Polar axis finder scope
port (front), with cap
Azimuth
adjustment
knob
Tube Mounting Rings
These quality cast-aluminum rings are custom-made for use
with the SkyView Equatorial Mount. They are hinged for easy
installation of the telescope tube and are lined with felt to pre-
vent scratching of the telescope. Check the outer diameter of
your telescope; if it matches the inner diameter (I.D.) of the
rings, then the rings will fit. Price is for a set of two rings.
For 90mm Refractor (I.D. 3.5"-3.75") (#9410)
For 4.5" Reflector (I.D. 5.3"-5.5") (#9411)
For 6" Reflector (I.D. 7.0"-7.3") (#9412)
AccuTrack SVD DC Motor Drive (#7825)
This is a small electric motor that attaches to the right ascen-
sion worm gear shaft of the equatorial mount. It turns the gear
on the R.A. axis at the same rate that the Earth rotates on its
axis, thereby following, or "tracking," the apparent motion of
the stars. Automatic tracking keeps objects from drifting out of
the field of view while you're observing. Runs on one 9-volt
alkaline battery (included).
Figure 2. Close-up of Equatorial Mount.
Right
ascension
(R.A.)
setting circle
Polar axis
finder scope
Latitude scale
Latitude
adjustment
knob
7