Optical Tube Assemblies
Wednesday 08 July, 2020
9 3/8ID (9 3/4 OD) x 38-55 Fiberglass Tube
16 f/5 O.T.A.
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Designed and engineered to be the very best performing Newtonian reflectors on the market today, the Parks 16" f/5 Optical Tube Assembly (OTA) provides superior imaging, craftsmanship, construction and viewing comfort like no other! Delivering superb images of the moon, planets, nebulae and deep sky objects, the Parks 16" f/5 OTA utilizes a Parks genuine Fiberglass Tube, Parks LEGENDARY fine annealed, diffraction limited Pyrex mirrors and the highest quality mechanical and optical components throughout.
With this remarkable telescope, you see not only the famed Ring Nebula (M57), but you can see the 15th magnitude central star. See the elusive Veil Nebula in Cygnus (NGC 6960), with its wispy filamentary structure and the famous Crab Nebula in Taurus (M2).
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 positioning of the focuser for photographic and visual purposes.
Primary Mirror Diameter: 16"/405mm
Focal Length: 80"/2030mm
Focal ratio: f/5
Magnification (with 25mm eyepiece): 81x
Secondary Mirror: 4"/100mm
Obstruction of Primary by Secondary: 6%
Tube Length: 80"/2m
Tube OD: 18.5"/47cm
Focuser: 2" with 1.25" Adapter; 3" of travel
Oculars: One each, 15mm & 25mm focal length, 1.25" Parks Optical Gold Series
Finderscope: 8x50 Polar Finderscope with Illuminated Reticle
OTA Shipping weight: 180 lb/80 kg
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 intended for the 48 Contiguous US States only. Alaska, Hawaii and international shipments 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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