Celestron designed the AstroMaster 70AZ 70mm f/13 Alt-Az Refractor Telescope as a multi-function starter-scope that can be used for both astronomical and terrestrial viewing. Its medium aperture and long focal length allow it to draw in a generous amount of light with a high magnification potential to allow observation of the larger planets and the moon. The included 90° diagonal has an integrated erecting prism that corrects the view to enable the scope’s use on land. Celestron includes two eyepieces for high and medium magnifications.
The AstroMaster is outfitted with a manual alt-azimuth mount and to make finding and tracking objects easy, there is an altitude control handle and an azimuth lock. Supporting the mount and optical tube is a stainless-steel tripod with sturdy 1.25″ diameter legs and an adjustable height from 24 to 41-inches. Its center accessory tray pulls double-duty as a convenient place to store eyepieces and smartphones while it locks the legs in place to improve stability and reduce vibrations.
Optical Tube
70mm aperture
f/13 focal ratio
900mm focal length
Anti-reflection fully coated optics improve light transmission, color rendition, and contrast
Resolution: Rayleigh: 1.99 arcsec; Dawes: 1.66 arcsec
Rack-and-pinion focuser with 1.25″ drawtube
Dovetail plate allows OTA to be attached to mount quickly and without tools
Mount and Tripod
Mount:
Manual alt-azimuth
Control handle helps to adjust altitude
Azimuth lock reduces vibration and additional movement
Dovetail saddle accepts OTA plate
Tripod:
1.25″ stainless steel legs
Adjustable height from 24-41″
Accessory tray locks in-place for added stability and vibration reduction
Spiked feet provide additional stability on soft, rough, or uneven ground
Eyepieces and Accessories
Eyepieces:
1.25″ diameter barrels accept most astronomical filters
10mm produces 90x magnification
20mm yields 45x power
Diagonal:
90° angle places user’s head in a comfortable viewing position
Built-in erecting prism corrects view for terrestrial use as a conventional spotting scope
1.25″ barrel and eyepiece holder
StarPointer Finderscope:
Unmagnified to provide an exceptionally wide field of view to make finding subjects fast and star-hopping navigation easy
Projects a center aiming dot that won’t obscure the subject
Variable intensity center dot won’t affect night-adjusted vision
