Double Arm Barn Door Tracker Plans

Construction plans for a star tracker.

Double arm barn door tracker plans.

φ θ arcsin sin θ β where θ is the angle through which the drive arm moves. 5 coupon applied at checkout save 5 with coupon. The angle φ through which the camera arm moves is given by. Sky telescope february 1988 p213 p214.

The double arm mount shown in the photograph uses a 6mm m6 threaded rod to drive it. While this article discusses building a simple single arm version you can create some advanced versions that include electric motors and driver boards to control them. There are a few different variations of a barn door tracker also known as a scotch mount or haig. Original concept by dave trott.

Make sure everything is square and moves freely clap the 2 hinged boards together and shout action a few times like they do when making movies if it makes a nice clack sound it should work well for a star tracker now measure 228 55mm from the center of the hinge pin down the middle of the board and mark the drive rod holes do this on. The nyx tracker uses a curved drive screw which eliminates the need for a double arm design. It is sometimes called the haig or scotch mount. 4 4 out of 5 stars 155.

First cut the 500mm length in half and mount the hinge. Nyx tracker the only inexpensive ready built barn door tracker of which i am aware is the 89 00 nyx tracker from nyx tech. The original single arm barn door has been around for many years and was i believe first popularized by a fellow named haig back in the 1970 s. How to build a double arm barn door tracker jefferson lab home page science education home page construction notes photos page sources.

Sky telescope april 1989 p436 p441 very good. Types of barn door trackers. The hinge is aligned with a celestial pole and the boards are then driven apart or together at a constant rate usually by turning a. Accurate solutions exist when β is in the region of 2 000 to 2 186 sky and telescope apr 1989.

A simple single arm barn door tracker can be made by attaching two pieces of wood together with a hinge. If you want a barn door but don t wish to build one from scratch this is your only option. The barn door mount whether single arm or double arm is a very simple inexpensive device.