AP 120/900 Black Diamond ED DS OTA Apochromatic Telescope

This refractor has chromatic aberration well corrected and is ideal for high-contrast planetary observations . It is also a apochromatic ED (Extra Low Dispersion) suitable for astronomical photography . It has an aperture of 120 mm and a focal length of 900 mm. The two-lens ED telescope offers a excellent image and collects around 290 times more light than the human eye with the pupil dilated 7 mm. with the glass FPL-53ED Almost all visible chromatic aberrations are reduced. ED lenses have a very low color dispersion and a low refractive index . By combining these special lenses with other optical lenses, a very good correction of chromatic aberrations is achieved. With the Crown crystal from the German brand Schott integrated you get even greater contrast. Thanks to high transmission metallic coating Applied to the lenses, high light transmission is achieved. The star clusters They look especially beautiful in this refractor and the image of the stars takes on a extraordinary sharpness . In combination with a optional field flattener , provides sharp images throughout the field and the aperture range of f/7.5 is Excellent for photography , because exposure times remain very short despite the long focal length. The telescope can also be used on smaller mounts, as the ratio of aperture to tube length makes it doesn't influence much . The tube has a 2" solid Crayford with a 1:11 reduction for fine focus, something of special interest to the astronomical photography . In the observation of nature , the refractor can be transformed into a powerful spyglass with various applications. This telescope is also a real gem from a purely aesthetic point of view: the tube and the finderscope have an elegant design in a beautiful black color. The white spray guard and tube clamps are a stylish contrast to the overall design.

Summary of advantages:

• particularly good color correction thanks to ED lens
• High-quality glass from Schott, the industry leader on the German market
• high transmission metallic coating

Scope of delivery:

• tube with optics
• white pipe clamps with prismatic rails
• 2" Crayford with 1.25'' adapter and 1:11 reduction
• 50.8 mm overhead mirror
• 2" 28mm eyepiece
• transport box very stable aluminum

Specifications

Items included:

• 1 Sky-Watcher Black Diamond 120ED optical tube
• 2 clamps
• 1 Vixen dovetail
• 1 Sky-Watcher 50.8mm fluid eyepiece: LET 28mm
• 1 diagonal dielectric 50.8mm
• 1 straight finder 9x50
• 1 Piggyback Mount for Kodak Stepper Camera on top of one of the clamps
• 1 rigid carrying case