build a 8 Telescope

How to rebuild a 8 Telescope

Webb Telescope was designed to capture high-resolution images of distant solar systems and planets which makes its launch into space an exciting experience. As soon as the telescope is in contact with space, its parts will start to unfold.

This simple design and written/pictorial instructions will enable you to construct your own 10″ Newtonian Dobsonian Telescope at an affordable cost! Making this project fun for young and old alike!


Reflector telescopes need primary and secondary mirrors that are collimated to produce sharp images. To achieve this, the optical axes on telescopes need to be aligned with their center for maximum performance. While this procedure may be complicated for larger telescopes however for smaller telescopes there is a straightforward procedure that just requires a bit of perseverance and skill to complete.

Then, you can identify the optical components that you can see through a drawtube. For instance, the primary mirror and spider reflections. Ronchigraming is a method for studying the center of the telescope. It can be done manually, or using software such as FigureXP.

Adjust the screws to tilt the primary and spider to ensure that the secondary’s sweet spot is aligned within the tube. Repeat this procedure until the sweet spots of both the primary and secondary are at their respective centers. Finally, make sure both spider and focuser axes are centered in sight tube (though this step could be not done depending on how precisely you had calculated earlier) This is called collimation.


The ES 10″ stands apart from other Dobsonian telescopes due to its tube made of birch plywood instead of aluminum for a variety of reasons. It is easy to work with, has superior strength and torsional rigidity, and costs significantly less. Additionally, its octagonal rings serve as baffles to block any light that is not directed towards the primary mirror and are secured by epoxy plugs inserted through holes in the wood instead of being glued directly to it; this reduces the possibility of damage, while removing external fasteners that can detract from aesthetics as well as potentially snag clothing while transporting.

The tube is mounted to an easy and sturdy Dobsonian base that’s both user-friendly and extremely stable, using large diameter altitude bearings that have Teflon azimuth bearings to ensure smooth up/down and left/right movements of the telescope, as well as tie-down rings for attaching beanbag-style counterweights that will prevent it from sagging over time.

The Ocular Tube assembly comes with a 2″ Crayford Focuser with two speeds to make focusing a breeze. It also includes an 1.25″ 2″ adapter, so that accessories and oculars are able to be used.


An 10″ telescope can make an excellent stargazing telescope for beginners and this classic Dobsonian design makes it suitable for budgets of any size. The parabolic mirror is expertly designed and is mounted on a sturdy base that is easily put together. Everything you need to get started exploring the universe is included!

The base is designed as an easy Susan and features sealed bearings that allow for smooth azimuth, altitude, and angular movement. It also features an angular-shaped ring of plastic that has markings that are one degree increments. This lets you make your telescope zero by first aiming it at Polaris and then sliding its ring to align its reference mark to an appropriate coordinate.

The built-in Laser Collimator makes it easy to align and move the mirror. You can also make use of its fan to swiftly bring the mirror back to its normal temperature and adjust its balance while changing the eyepieces. A battery-operated fan also assists. Plus, an included removable counterweight set lets you adjust its balance before changing eyepieces.

The telescope is equipped with steel carrying handles that are conveniently placed around the center of gravity. This makes it much easier to move and pick up. However this heavy tube will require transportation. A 1.25″ Moon filter, along with 2″ 30mm Super View eyepiece and a 9mm Plossl eyepiece are included for starting you off with some quality magnification, so you can observe the finer details of planets and deep sky objects requiring further magnification.


If you’re considering building your own telescope, there are a few important things you should keep in mind. Many people build their own telescopes to save money or gain experience (which can be helpful in gaining knowledge about astronomy) or to push themselves. Whatever your reasons to build one yourself, the basics tools like table saw band saw, table saw or drill press will be required for most amateur telescope makers.

The Orion Rebuild a Scope 10″ Classic Dobsonian Telescope includes all the accessories needed. It includes an 8×50 finderscope, with ability to correct images, two eyepieces, and a 3x Barlow Lens, plus a laser collimator that can fine-tune the optical system Strong Magnetsfor stabilization and a Moon filter that reduces glare from the surface while revealing increased detail of the moon’s surface.

This 10″ Dobsonian has an exquisite parabolic reflector housed in an enameled steel tube. It is mounted on the Dobsonnian base that has sealed ball bearings for smooth altitude adjustments and rocker box controls. Its large aperture allows you to see celestial objects, including Saturn’s rings, Saturn’s striations, and Mars’ ice caps. It also has an adapter that can be used with multiple eyepieces.

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