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Bresser provides beginner and intermediate astronomers with a complete manual observation kit with this version of their Messier 4" f/5.9 Achro Refractor Telescope. It comes with the apochromatic refractor optical tube, the Exos-1 equatorial mount, a tripod, and an array of optical accessories. This Messier optical tube assembly (OTA) features an achromatic lens system to virtually eliminate chromatic and spherical aberrations which translates to an immersive distortion-free viewing experience with true color rendition across the entire field of view - especially at the edges. The combination of aperture, aberration-free optics and a fast f/5.9 focal ratio make this telescope ideally suited for astrophotography and astroimaging. This OTA is ideally suited for imaging or viewing near and deep-sky objects such as the Moon, planets, galaxies, and nebulae.
This iteration of the Messier is equipped with the Exos-1 manual equatorial mount and features dual-axis slow motion cables to more easily track objects, and an integrated bubble level to assist in set-up. Built into the mount is an access port for an optional polar alignment scope to aid in faster and more precise set up. The tripod, a step-up from typical "starter" tripods, is adjustable from 25 to 42" to accommodate a wide range of users. Its 1.5" leg diameter has three sections with large thumbscrews for tool-free adjustment in the field. The mounting cradle-ring assembly clamps over the optical tube and lets the user adjust the orientation and position of the scope relative to the mount to optimize viewing comfort and balancing, while avoiding interference with other equipment, and a 1/4"-20 stud on the top of the cradle ring assembly enables a camera to be piggybacked onto the scope for wide-field photography.
The scope is equipped with a 2" rack-and-pinion focuser for over-sized eyepieces and accessories, and comes with a 1.25" reducer adapter and a 1.25" 26mm super Plossl eyepiece that yields 23x power on the OTA. The adapter also has integrated T2 mounting threads to enable the use of a user-supplied DSLR-specific T2 ring for astrophotography through the scope.
Focal ratio: f/5.9
Focal length: 600mm
Refractor-style optical design
Achromatic lenses eliminate chromatic and spherical aberrations for true color rendition and without distortion across the entire field of view, especially at the edges
6x30 non-illuminated straight-view finderscope
Cast aluminum with white powder-coat
Flexible dual-axis slow motion cables reduce
vibrations while tracking objects
Integrated bubble level on mount base
6.6lb (2kg) counterweight with 20mm diameter bar
Latitude, Right Ascension, and Declination scales
Polar finder scope access port for optional accessory
2" rack-and pinion focuser
26mm super Plossl eyepiece, yields 23x power
2"-to-1.25" eyepiece adapter with integrated T2 threads
90° star diagonal
15 pound payload capacity
1.5" stainless steel legs
25 to 42" height range
Accessory tray with holes for 1.25" eyepieces
In the Box
BRESSER Messier 4" f/5.9 Achro Refractor Telescope with Exos-1 EQ Mount and Tripod