Celestron Ultima 8 Instruction Manual page 40

You may have noticed that you cannot get to the SLEW rate. This is because the SLEW option is disabled at the factory.
It is disabled as a safety feature. It is possible to slew the telescope into your head because you thought you were in a
different speed rate.
There are two ways to SLEW the telescope.
One is set the speed to FINDER rate, hold down the diamond button for the direction you want to slew, then press the
opposite diamond button simultaneously. The telescope will SLEW.
The second way is to disable the safety, which we do not recommend for normal use. If there are circumstances that
require this, see the section on "SETUP-BTN SLEW".
Here is another method for changing speeds, but be sure the BTN SPD is set to ON. See the description of BTN SPD,
later on in this section.
ACTION
Start anywhere
hold down the right
DIAMOND button
while still holding the
DIAMOND button,
press UP once
You can change to any of the speeds this way except for SLEW. Again for SLEW, you need to leave the telescope in
FINDER speed and use one of the techniques described above.
TRACK
There are four tracking rate settings:
OFF
ALT AZ
EQ SOUTH
EQ NORTH
The OFF setting is useful when aligning the telescope to the stars or when the telescope is being used terrestrially.
The most common use of the Ultima 2000 is in ALT-AZ mode. In this setting, the telescope will track the stars in the
altazimuth configuration. Just put the telescope on the tripod, align it to two stars and you are ready to go.
EQ NORTH and EQ SOUTH are for polar aligned scopes using the optional wedge. This makes the RA tracking motors
run at sidereal rate. The DEC motors do not run unless you are running them manually.
RATE
The Ultima 2000 has four tracking rates for tracking the objects in the sky. Here is what each is for:
SIDEREAL Use this rate for tracking the stars.
KING Use this rate for tracking stars low on the horizon. Due to atmospheric refraction, stars
and objects near the horizon travel at a slightly slower rate.
SOLAR This rate is used for tracking the Sun.
40
NOTES
You can be in the main menu or any sub menu and this method
will work. Just be sure the BTN SPD is set to ON or this will
not work. For an example we will be at the TIMER menu
The screen changes to the SPEED screen with the speed setting
blinking. Let's say it was last set to CENTER, so the "C" is
blinking.
The SPEED selection changes to...
DISPLAY
MENU
TIMER
SPEED
CENTER
SPEED
FINDER