These Dobsonian telescopes are available in 3 sizes (8", 10" and 12"). They combine high quality, big-aperture optics with the simplicity of a dobsonian mount at highly affordable prices. The 12" model gulps in 44% more starlight than 10 " optics and an astounding 225% more light than 8" optics. This telescope will keep any astronomer busy hunting faint fuzzies for many years to come.
The 12" f/5 Antares dobsonian features a parabolic mirror that is accurate to 1/6 wavefront (corresponding to a surface accuracy of 1/12 wave) or better. It is placed in a 9-point support mirror cell. The mirror is housed in a white-enameled steel optical tube equipped with a 2" Crayford focuser with a 1.25" adapter (with brass compression rings), a 50mm right-angle finderscope and a dust cap. Also included is a a cooling fan for the primary mirror to reduce cool down time (12V with 8 AA battery pack and standard extension cable). The standard Crayford focuser can be optionally upgraded to a 10:1 Crayford microfocuser.
The 12" model 530D Antares telescope also comes with two 1.25" high quality Plossl eyepieces (9mm and 32mm providing magnifications of 47x and 167x). The 8x50mm right angle, correct image (RACI) finder features a multi-coated objective and eyepiece cross-hairs that allow for precise centering of faint objects. It provides a generous 5.4 degree field of view. This is mounted on a quick release bracket with 3-point adjustment, including one that is spring loaded.
The stable dobsonian base also features an eyepiece/accessory tray and a carrying handle. The spring system provides the right amount of friction on the altitude bearings to ensure proper tube balance. Set-up takes a few minutes and even the larger models are reasonably portable. 2 year warranty.
Primary mirror diameter 300mm (12")
Focal length, f ratio 1500mm, f/5
Primary mirror specs BK7 glass, Aluminum coatings with 92% reflectivity, 1/6 wave or better
Secondary mirror 1/10 wave or better
Focuser 2" Crayford focuser with a 1.25" adapter and brass compression rings
Finderscope 8x50mm RACI finder
Eyepiece(s) 1.25" 9mm and 32mm Plossl eyepieces included
Optical tube dimensions (diameter x length) 14" x 57 "
Optical tube weight 42.9 lbs including finder
Base dimensions (diameter x height) 25.25" x 25"
Base weight 29.9 lbs
Rocker box dimensions (H x D x W) 22.5" x 17" x 16.625"
Bearing diameter 5"
Total (maximum) telescope height 62" with tube in base pointed at the zenith
Total weight 72.8 lbs
Warranty 2 year manufacturer's limited warranty
Other included items/ features 12V cooling fan