SPECIFICATIONS
Model and Product Number ETX90 Portable Observatory # 3514-04-20
Optical System
Optical Design Maksutov-Cassegrain
Primary Mirror Diameter 3.5” (90mm)
Primary Mirror Material Optical quality glass
Focal Length, Focal Ratio 1250mm, f/13.8
Optical Coatings Ultra-High Transmission Coatings (UHTC™)
Resolving Power (arcseconds) 1.3 arcseconds
Limiting Visual Stellar Magnitude 11.7
Viewnder Red Dot
Mount
Mount Type Dual Fork Altazimuth
Power 6 “AA” Cell Batteries or AC Adapter
Battery Life 20 hours
Tripod Adjustable-Height Steel Leg Tripod
with EQ tilt-plate
Electronics
Controller Hand Box AutoStar #497
Included Accessories
Eyepieces Super Plössl 26mm and 9.7mm - 1.25”
Bubble Level/Compass Included - 1.25”
Astronomy Software Included - for Windows OS
Weight
Telescope 9.05 lbs.
Tripod 13.3 lbs
Carry Case 6.65 lbs
SPECIFICATIONS
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