The Intes MK66. 6" f/12 Rumak Maksutov-Cassegrain optical system with moving primary focus. Optical quality is stated as 'diffraction limited' (mine is 1/8 wave front), Multi-coated Meniscus lens. Attached aluminum dew shield. 2" threaded rear cell opening to accept SCT accessories.Clear Aperture 150mm. Focal Length 1,800 mm . Tube Diameter 178 mm Tube length 530 mm Tube Weight 6.5 kg Linear Field of View 40 mm Photographic Resolving Power at Center 58 mm-1 Photographic Resolving Power at Edge 26 mm-1 Max. useful magnification 300X. Resolution 0.78 arcsec.
Optically this is a beauty, mechanically is a tank. See the Review
The CG5 has been manufactured for a long time with relative bad reviews, Celestron changed this by introducing a much better tripod and some changes to the mechanic of the drive. The electronic section is a NextStar hardware.
The Universal Astronomics Micro Star Deluxe is AltAzimuth drive, very simple to use and extremely handy. It is very stable and can hold several times its weight.You can see a Review
The Televue Pronto has a 70mm Aperture, ED Doublet Focal Length 480mm Focal Ratio f/6.8 Max Visual Field 5.5 degrees Weight/Length 6 lbs./17".Very good mechanics and optics. For a Review click here
The PST telescope has a modest 40mm aperture f/10, 400mm focal length. There are two wideband blocking filters in the system to reject unwanted and harmful radiation - one within the coating of the front lens and the second close to the eyepiece.You can see very cool things in the Sun. Here is a Review
The Meade 2045 is a 4" Smith Cassegrain design f/10 made 100% of aluminum very handy for astrophotography and acts as a 1000mm telephoto