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13. Loosen the thumbscrews on the end of the focuser, remove
the focuser's cover cap, and insert the 25mm (or 17mm)
eyepiece. Retighten the thumbscrews on the focuser to
secure the eyepiece in place.
Balancing the
Telescope
For best altitude (up-and-down) motions, the
telescope optical tube should be roughly balanced
on the base.
Moving the
Telescope
The StarSense Explorer Tabletop Dobsonian
telescope moves freely in altitude (up-and-down)
and azimuth (left-to-right).
Attaching the
Smartphone
Downloading and
Activating the App
Before you take your telescope outside, download
the StarSense Explorer app to your mobile device.
Search for "Celestron StarSense Explorer" in
the Apple App Store or Google Play. The app is
large, so we recommend downloading it while
connected to Wi-Fi.
Once you have downloaded the app, locate the
orange postcard in your telescope box. Launch
the app. When prompted, enter the activation
code on the postcard to activate the app. Your
code will unlock up to 5 devices.
1
1. To check balance, loosen the altitude tensioning
knob so the altitude axis moves freely. Note if
the telescope wants to tilt forward (front-heavy)
or back (back-heavy).
1
1. Simply move the tube by pushing it in the
desired direction. For the 150mm model, you
can use the knob handle at the front of the
telescope for a hand grip.
1
1. Remove the large cap covering the mirror on
the front of the StarSense dock.
Download the app from the
before your first observing session
When prompted, enter the unique unlock code below to
enable telescope control on your device.
2
2. Loosen the tube ring knobs (130mm and
150mm models) or tube clamp knob (114mm)
and slide the telescope forward or back in the
rings/clamp so it is balanced. Retighten the
knob(s) when done.
2 2
2
2. If the altitude motion moves too freely, or
the telescope moves up or down with no force
being applied, tighten the altitude tensioning
knob. Conversely, if it takes much force to move
the telescope upwards or downwards, loosen
the knob.
2
2. Pull open the spring-loaded slider on the top
of the phone dock and set the phone into
the holder so it is fl ush with the bottom lip of
the phone holder. Slowly release the slider to
secure the phone in place.
or
.
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