Cruise the Milky Way with Comfort and Stability in a Custom Binocular Chair
It’s now possible to stargaze the full sky with comfort and stability, by using a proven easy-to-construct, low cost binocular chair. Just turn the azimuth drive wheel with one hand, while fine-tuning the elevation with the other hand. Enjoy full functionality compared to the use of a tripod or parallelogram mount or virtually any other viewing method. Steady astronomy viewing for as long as you like, without the shaking and the neck pain. Or enjoy comfortable daytime nature viewing from your porch or window.
We provide downloadable plans, so that you can easily build the components for attachment to your zero gravity chair, or other chair style. These straight forward and comprehensive plans cover parts acquisition, step-by-step construction and attachment to your chair. We have gone through two years of development, prototyping, testing, and user approval. The components will accommodate the dimensions of standard chairs, can be quickly attached to your chair, and will support mid-sized binoculars.
A Bino-Chair in Operation
Start by leaning back in your chair to gain some viewing elevation. The binocular holder follows along….
….. then slowly turn the azimuth drive wheel with one hand, while fine-tuning the elevation with the other hand. The binocular holder has a pivoting cradle, which optimizes positioning of the binoculars to your eyes. When you let your hands go, the viewing direction is maintained.
The backrest of the chair tilts back to bring the binocular holder up very high. Then this holder ( called the teeter ) can be tilted. If you slightly arch your neck, you can view straight up. The nape of your neck is supported with a large cushion. At any time, you can push the binoculars up or down away from your face, to use a chart for example. When done, return the chair upright using a few pounds of leg pressure.
Component Plans
Our downloadable binocular chair component plans include those for Azimuth Control and for Elevation Control. They have parts and materials sourcing, step-by-step construction guidelines, exploded parts diagrams, photos, and finally some assembly and testing guidelines, along with technical support. Both metric and imperial. The plans are found by clicking on the “Downloadable Plans” heading at the top of this page.
1. Azimuth Control:
Rotating Base and Drive Wheel
Your chair sits stably on a wide rotating base. Easy 360° panning is done with the hand-driven wheel. Used in combination with the elevation component, you have access to the entire sky.
The sturdy rotating base has two sections; one section just rests on top of the other. The base includes a large turntable bearing, a simple friction mechanism, a rubber track and leveling legs.
The azimuth setting can be continuously controlled with a light touch of the hand. There is no drift or bounce-back, because of the added friction. This also means that the ground doesn’t have to be perfectly level.
The drive wheel mount on the side of the chair conforms to the geometry of your chair’s frame, and self-adjusts to the required height off of the base track.
2. Elevation Control:
Teeter, Cradle, Stability Rods, Chair-front Counterweight
This provides stable and comfortable viewing all the way up to zenith. Begin setting the viewing elevation by simply tilting the backrest. The backrest has a “teeter” mounted on it. You can preset it for user height and neck cushion thickness. The binoculars are balanced using adjustable weights at the rear of the teeter. The binoculars can be tilted up out of the way when getting into the chair, or when using a star chart.
At the front of the teeter is a binocular cradle holder. This cradle has many benefits for quality viewing. It allows for finely positioning the eyes to the binoculars. This is helpful when making large changes in viewing elevation.
Reclining chairs will use a counterweight at the front of the chair to compensate for the combined weight of the teeter and the binoculars. This assists when tilting the backrest.
The optional stability rods keep the viewing elevation steady.
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