Optical Tube Assemblies
Monday 06 July, 2020
1.83 Secondary Mirror
10 f/4 & f/15 HIT O.T.A.
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Note: This is an oversized item that requires custom shipping options. Freight charges are to be quoted based on destination at time of delivery.
The Parks 10" f/4 & f/15 Hybrid Integrated Telescope (HIT) is really two telescopes in one: a fast f/4 Newtonian and sharp f/15 Cassegrain.
The ultra fast, rich-field (f/4) reflector mode combines large aperture and a wide field of view to deliver breathtaking views of globular clusters, open clusters, nebulae and galaxies. This mode is perfect for deep sky visual and photographic applications. Astro-photographers will appreciate the extremely fast photographic performance the f/4 design delivers.
The long focal length (f/15) classical Cassegrain mode is ideal for high magnification, high-resolution observing and photography. The Cassegrain mode delivers stunning planetary, lunar, solar and double-star images.
Parks HIT O.T.A. is supplied with two secondary mirrors, Cassegrain and Newtonian. To switch modes, a secondary with its is lifted out and another one put into the same spider. Both mirror holders use pins to index into the proper position. This switch can be performed in just minutes, without the need for re-collimation.
All mirrors are ground, polished, and hand figured completely in-house for diffraction-limited results. The optics are mounted in a genuine Parks low thermal conductive fiberglass tube. The tube provides room around the mirror for air movement without disturbing the images. A large 8x50 right angle/straight-through finderscope is standard, as is a 2" rack and pinion focuser with 1.25" adapter. The primary mirror cell and secondary mirror holder are adjustable for alignment purposes. The rotating ring system allows convenient re-positioning of the eyepiece or camera, depending on the location of the target.
Primary Mirror Diameter: 10"/254mm
Focal Length, Newtonian Mode: 40"/1016mm
Focal Length, Cassegrain Mode: 150"/3810mm
Focal ratio: f/4 Newtonian; f/15 Cassegrain
F/4 Secondary mirror: 3.5"/88.9mm
F/15 Secondary mirror: 3.48"/88.5mm
Focuser: 2" with 1.25" Adapter; 3" travel
Oculars: One each, 15mm & 25mm focal length, 1.25" Parks Optical Gold Series
Finderscope: 8x50 Polar Finderscope with Illuminated Reticle
Weight, Optical Tube Assembly: 34 lbs/15.4 kg
Shipping Weight, Optical Tube Assembly: 100 lbs/45.4 kg
Delivery: 18 - 24 months ARO.
25% Deposit to start build
75% + shipping + crating to ship
All product specifications, prices and shipping charges are subject to change without notice. Prices, in US Dollars, do not include any applicable state taxes and/or customs fees. Shipping/Handling estimates are quoted on a case by case basis. Please contact Parks Directly -
10 f/5 O.T.A.
10 f/4 & f/15 HIT O.T.A.
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