AC 90/900 optics.
This optics is equipped with an achromatic objective. Because of a special combination of two lenses within the objective, most of the colour aberrations can be corrected. Thus, you do not have to face so many disturbing irregularities as usual with common Fraunhofer refractors. The aperture ratio of 1:10 has an additional positive effect.
Ideal No Fuss, Grab-and-Go Telescope Mounting for Easy Visual Astronomy as well as Daytime Terrestrial Observations!!
The Sky-Watcher AZ PRONTO is a lightweight, highly portable Alt-Azimuth mount constructed from cast aluminium, designed to attach small telescopes up to 3kg in weight, fitted with a 45mm dovetail bar.
The aluminium telescopic tripod legs can be extended and clamped in any position using the integral leg locks.
Supplied with two flexible slow-motion cables, one for vertical and one for horizontal smooth fine motion control. The slow motion cables can be positioned in a choice of two different positions on each axis, making it convenient to control both refractor and reflector telescopes.
The mount can also be moved around each axis manually, for rapid panning and elevation adjustments. Accurately tracks distant moving objects with ease. This delightfully convenient and well engineered grab-and-go mounting is suitable for both terrestrial observations and astronomical viewing.