Orion 203mm F 4 9 Reflector Telescope Optical Tube Assembly. The 203mm F/4.9 Reflector Telescope Optical Tube is recommended for visual use or astrophotography. Includes camera adapter. Weighs 16.5 lbs. Tube rings, tube ring mounting plate, finder scope, and telescope eyepieces sold separately. Warranty Limited Warranty against defects in materials or workmanship for one year from date of purchase. · Verified Purchase. This is a nice and solid telescope. It will require collimation, as it is simply asembled without any optical adjustments- this is understandable, since shipping would throw any factory adjustments way off. I built a Dobsonian mount.
The Orion 203mm F/4.9 reflector telescope optical tube assembly (OTA) is an ideal instrument for both amateur and professional astronomers. With its large aperture and fast focal ratio, this OTA provides excellent light gathering capabilities and is capable of delivering stunning views of the night sky. This OTA is constructed with a heavy-duty aluminum tube, a two-speed focuser, and a 6-point flotation system. With its superior construction, this OTA is sure to provide years of reliable performance.
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The Orion 203mm F/4.9 reflector telescope OTA features a large 203mm diameter primary mirror with a focal length of 945mm, which yields a fast focal ratio of 4.9. This fast focal ratio is ideal for astrophotography as it provides a wide field of view and allows for shorter exposure times. Its large aperture also provides excellent light gathering capabilities, making it ideal for observing faint objects such as galaxies and nebulae.
The Orion 203mm F/4.9 reflector telescope OTA is constructed with a heavy-duty aluminum tube, which is both lightweight and durable. The two-speed focuser allows for fine-tuning of focus to reveal even the faintest of details. The 6-point flotation system provides superior stability and reduces the effects of atmospheric turbulence. This OTA also includes a 2″ eyepiece holder and a 1.25″ adapter, which allows for use of both standard and wide-field eyepieces.
The Orion 203mm F/4.9 reflector telescope OTA is a great choice for both amateur and professional astronomers. With its large aperture, fast focal ratio, and superior construction, this OTA will provide years of reliable performance and stunning views of the night sky.
Step-by-step guide to assemble Orion 203mm F/4.9 reflector telescope OTA
- Attach the focuser to the telescope tube.
- Attach the primary mirror cell to the tube.
- Attach the secondary mirror to the focuser.
- Adjust the primary mirror cell to ensure correct alignment.
- Attach the finder scope to the tube.
- Attach the dew shield to the telescope tube.
- Attach the eyepiece holder to the focuser.
- Attach the 1.25″ adapter to the eyepiece holder.
- Adjust the 6-point flotation system to ensure stability.
- Attach the dust cover to the telescope tube.
The Orion 203mm F/4.9 reflector telescope OTA is a great choice for anyone looking for a reliable and capable OTA. With its superior construction, fast focal ratio, and large aperture, this OTA is sure to provide stunning views of the night sky for years to come. With a few simple steps, you can easily assemble this OTA and start exploring the universe.
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Amazon.com : Orion 203mm f/4.9 Reflector Tube Assembly : Reflecting Telescopes : Electronics The 203mm F/4.9 Reflector Telescope Optical Tube is recommended for visual use or astrophotography. Includes camera adapter. Weighs 16.5 lbs. Tube rings, tube ring mounting plate, finder scope, and telescope eyepieces sold separately. Warranty Limited Warranty against defects in materials or workmanship for one year from date of purchase., Orion 203mm F 4 9 Reflector Telescope Optical Tube Assembly.
