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Meade

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Item Includes Description Features Specifications

Meade ETX-90AT 3.5" (f/15), 1250mm Focal Length Maksutov-Cassegrain Telescope with UHTC Coatings

Mfr. Part: 35140360     SKU: MDETX90ATMC

Meade ETX-90AT 3.5" (f/15), 1250mm Focal Length Maksutov-Cassegrain Telescope with UHTC Coatings
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Item Includes
Meade ETX-90AT Astro Telescope with Fork Mount System - #497 Autostar Handbox with Coil Cord - Eyepieces - Hex-wrench - #884 Deluxe Field Tripod - 2 x Attachment Knobs - Spreader Tray with Separate Spring - 2 x Washers - Tension Knob - Leg Extension Lock Knobs - Instruction Manual - Meade 1 Year Limited Warranty

Description
The Meade ETX-90AT is the ultimate telescope with twice the light collecting area of the telescope permits a much broader range of astronomical study. For the observer who is serious about astronomy, this telescope is a deeply satisfying instrument for a lifetime of astronomical study.


Serious astronomers for years have flocked to the Meade ETX for its observatory-quality Maksutov-Cassegrain optical system. Its diffraction-limited optics is so crisp in contrast, brightness and image resolution that they consistently out-perform telescopes of larger aperture. All ETX telescopes features BK-7 glass and oversized Pyrex primary mirrors.

The Meade UHTC is a series of exotic optical coatings precisely tuned to optimize the visual, photographic and CCD imaging performance of your ETX telescope. Image brightness is increased by nearly 15% over standard Meade coatings. Objects such as stars, galaxies and nebulae as observed through your ETX will be dramatically brighter. Even observations of the Moon and planets will benefit in increased image brightness from the full spectrum of light transmission.

Features
The Meade AutoStar controller helps you quickly find and GoTo over 30,000 objects in the sky.
Constructed of strong, lightweight steel, the full length Meade #884 Deluxe Field Tripod provides a rigid mounting platform for virtually any ETX observing application.
Features Maksutov-Cassegrain optical system
Ultra High Transmission Coatings optimize the visual, photographic and CCD imaging performance of your ETX telescope

Specifications
Optical designMaksutov-Cassegrain
Primary mirror diameter96mm (3.78")
Clear aperture90mm (3.5")
Focal length1250mm
Focal ratio (photographic speed)f/13.8
Near focus (approx)11.5 ft (3.5m)
Resolving power1.3 arc secs
Super multi-coatings (EMC)standard
Limiting visual stellar magnitude11.7 (approx.)
Image scale1.16°/inch
Maximum practical visual power325X
Viewfinder8 x 21mm
Secondary mirror obstruction (dia.; %)27.9mm (1.1"); 9.6%
Telescope mountingFork type; double tine
Setting circle diametersDec.: 3.5"; R.A.: 7"
Input voltage12 volts DC
Motor Drive SystemDC servo motors with encoders, both axes
AltitudeUHMW polyethylene
AzimuthPTFE
Tube bodyAluminum
MountingHigh-impact ABS, aluminum-reinforced
Primary mirrorPyrex glass
Correcting lensBK7 optical glass, Grade-A
Battery Life (approx.) with Autostar20 hrs
Processor (Autostar)68HC11, 8MHz
Flash Memory (Autostar)1MB, reloadable
Keypad (Autostar)20 key alphanumeric
Display (Autostar)2 line, 16 character LCD
Backlight (Autostar)Red LED
Utility Light (Autostar)Yes
RS-232 (Autostar)Yes
Coil Cord (Autostar)24"
Database (Autostar)30,223 objects
Length (Autostar)6.56" (16.6cm)
Width (LCD end) (Autostar)3.19" (80cm)
Width (Connector end) (Autostar)2.25" (57cm)
Depth (Autostar)0.81" (21cm)
Optical tube dimensions (dia. x length)10.4cm x 27.9cm (4.1" x 11")
Telescope dimensions38cm x 18cm x 22cm (15" x 7" x 9")
Telescope net weight(incl. Autostar & batteries) 3.5kg (7.8 lbs)
Autostar net weight1.12 lbs (0.51kg)
WarrantyMeade 1 year limited warranty
  
 
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