Product description
National Geographic’s AC 90/900 EQ-3
The 90/900 refractor telescope gathers a lot of light with it`s 90mm aperture. The long focal length (900mm) makes the telescope a specialist for observing the moon, planets and bright objects outside our solar system. Saturn’s majestic rings and giant storms on Jupiter can be seen, as well as bright emission nebulae, galaxies and star clusters if you observe on a dark, moonless night away from city lights. The sturdy equatorial mount can be pointed to the North Star, Polaris, and tracking objects by hand is child’s play.
The EQ-3: This equatorial mount provides the opportunity to precisely align scopes with Polaris. The correct pole height or geographical latitude can be set for each observation site. Thanks to fine movements along the right ascension and declination axes, objects can be precisely located, followed and kept within the visual field. A counterweight precisely balances the telescope.
The EQ-3 mount provides a solid base for most smaller and medium-sized scopes and is very well suited to spacewalks through the night sky. The tripod is extendible and a shelf provides space for eyepieces and other accessories.
Specifications
Optics
Type: Refractor
Type of build: Achromat
Aperture (mm): 90
Focal length (mm): 900
Aperture ratio (f/): 10
Resolving capacity: 1,28
Limit value (mag): 11,6
Light gathering capacity: 170
Max. useful magnification: 180
Tube construction: Full tube
Focuser
Type of build: Gear rack
Connection (to eyepiece): 1,25″
Gear reduction: without
Mount
Mounting type: Equatorial
Type of build: EQ-3
GoTo control: no
Tripod
Type: Tripod
Material: Aluminium
Accessory plate: yes
Included accessories
Finder scope: Red dot finder
1.25” eyepieces: H 20mm, H 12mm, SR 4mm
Barlow Lens: 3x
Moon filter: yes
Slow motion cable (piece): 2
Dew Shield: yes
Deviating optics: 1.25″, 90° star diagonal
Counterweight (piece): 1
Area of application
Moon & Planets: yes
Nebulae & galaxies: yes
Nature Observation: yes
Astrophotography: no
Sun: no (Only with appropriate Sun filter)
Recommended for
Beginners: yes
Advanced: no
Observatories: no
https://www.astroshop.eu/telescopes/national-geographic-telescope-ac-90-900-eq-3/p,46384
