Barn Door Star Tracker Calculator

Affordable portable star tracking.

Barn door star tracker calculator.

Star tracker calculator will tell you how fast to turn the drive screw and provide. Essentially it is the time it takes for a any star in the sky to return to that same position. How to build a dslr barn door trap bdt. A sidereal day on earth is 23 hours 56 minutes and 4 091 seconds long or 1436 minutes about 4 minutes shorter than a standard solar day and we can use this time to calculate the rate at which the barn door tracker needs to turn.

Don t worry about precision measurement and buying specific screws. A barn door tracker also known as haig or scotch mount is a camera mount used to take long exposure photographs of the night sky without the star trails caused by the rotation of the earth. Want to build a barn door tracker. The most compact tracking mount on the market it s also the least expensive.

It consists of two boards connected by a hinge with a bolt which is turned to move the two boards apart or towards each other to counter the effects of. Cut your two blocks of wood pieces into 13 x 4 pieces. Star tracker calculator is a tool to help you build and work a barn door star tracker. That means we want to spin our barn door tracker at a rate of 360 degrees every 24 hours which comes out to be 0 25 degrees per minute.

Just build what you want input the pitch of your drive screw the distance from the hinge to the screw and you re all set. You can however make a 6 wide board and use a 4 hinge but you may give up some stability. Longer exposures have star trails and a bdt helps keep st.