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#64 T-Adapter: The basic means of photography through any ETX Astro telescope,
the #64 T-Adapter threads to the rear cell of the telescope, followed by a T-Mount
appropriate to the user’s brand of 35mm camera. In this way, the camera body is
rigidly coupled to the telescope's optical system, which in effect becomes the camera's
lens (see
PHOTOGRAPHY, page 40).
#932 45° Erecting Prism: All ETX models include an internal optically-flat mirror to
reflect light to the telescope’s 90° astronomical observing position. In this position the
telescope’s image is upright, but reversed. For terrestrial observing with an ETX
model, the #932 Erecting Prism (
Fig. 37) correctly orients the eyepiece image and
provides a convenient 45° observing angle.
#774 Hard Carrying Case (for the ETX-90AT), #776 Hard Carrying Case (for the
ETX-105AT) and
#775 Hard Carrying Case (for the ETX-125AT): For secure
portability of ETX Astro Telescope models in the field, Meade hard carrying cases (
Fig.
38
) are fully lined with fitted foam inserts. They accept the complete ETX Astro
Telescope plus optional accessories.
#765 Soft Carry Bag: The Meade soft-padded carry bag (Fig. 39) is well suited to
travel with the ETX-90AT Astro Telescope. Each carry bag includes a shoulder strap
and permits ready transport of the complete telescope, including accessories.
Power Adapters and Cords: In addition to their internal battery packs, ETX-90AT,
ETX-105AT, and ETX-125AT telescopes may be powered from standard 115vAC
home electricity with the
#541 AC Adapter. The #541 plugs into any standard home
outlet and includes a 25 ft. cord connecting to the telescope’s control panel. Input
voltage to the telescope is 12vDC. Alternately, an ETX telescope may be powered in
the field from an automobile cigarette lighter plug by using the
#607 Power Cord, a
25-ft. cord that plugs into the telescope’s control panel and supplies 12vDC directly
from the car battery.
#1244 Electric Focuser (for the ETX-90AT and ETX-105AT) and #1247 Electric
Focuser (ETX-125AT):
Meade-engineered for smooth, rapid focusing with any
ETX model, each electric focuser (
Fig. 40) includes coarse and micro-fine speeds. The
standard-equipment hand controller accepts one (user-supplied) 9-volt battery and
focuses the ETX telescope. On the ETX models, the focuser plugs into and is
powered by, the telescope’s control panel, with operation effected through either the
Autostar or the optional #497 Autostar Computer Controller.
#887 Advanced Field Tripod for the ETX-105AT or ETX-125AT: For extra stability in
sensitive applications of the ETX-105AT or the ETX-125AT even at the highest mag-
nifications, the fixed height #887 Tripod permits either altazimuth or
equatorial orientation of the telescope for astronomical or terrestrial observing. The
#887 includes an equatorial wedge for polar alignment. The tripod's 2"-diameter steel
legs collapse for easy transport in the field.
#880 Table Tripod (for ETX-90AT) and #881 Table Tripod (for ETX-105AT and the
ETX-125AT): For fully automatic tracking, a table tripod may be added allowing for
polar alignment of the telescope. See Fig. 41.
Each table tripod includes two fixed legs and two variable-length legs inscribed with a
range of latitude settings for quick polar alignment. At observing latitudes below about
25°, the optional
#1422 Low-Latitude Balance Weight is recommended for ETX-90
Astro Telescope models; the low-latitude balance weight is included with the table
tripod for the ETX-105AT and the ETX-125AT Astro Telescopes.
Fig. 37: The #932 45°
Erecting Prism.
Fig. 38: #774 Hard
Carrying Case shown with
an ETX-90AT.
Fig. 39: The #765 Soft
Carry Bag for the
ETX-90AT.
Fig. 40: #1244 Electric
Focuser.
Fig. 41: The #880 Table
Tripod.