Type 4 Barn Door Tracker

Ideally this drive requires a 1 rpm stepper motor however for shorter exposures on a stable platform tripod a well designed type 4 barn door tracker produces very acceptable results manually advancing the drive in small sequential steps in order to achieve one full revolution per minute.

Type 4 barn door tracker.

Get it as soon as mon sep 14. A followup appeared in the april 1989 issue. 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. Zekoo 4 ft 12 ft bypass sliding barn door hardware kit single track double wooden doors use flat track roller one piece rail low ceiling 4ft single track bypass 4 5 out of 5 stars 111 99 00 99.

Choose from our selection of barn door tracks including roller track roller track sets and more. Winsoon 9ft single track bypass barn door hardware double doors kit heavy duty sliding one track antique roller for cabinet closet fit double 54 wide doors. 4 4 out of 5 stars 127. Cut your two blocks of wood pieces into 13 x 4 pieces.

Hello peter i m buidling a type 4 barn door tracker. 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. The hinge you measure from depends on the drive geometry since this distance must not vary as the arms close. In stock and ready to ship.

A barn door is a specialized type of equatorial mount. For a type 2 and type 3 drive b is measured from the drive arm hinge point to the sliding contact point. I m about to order the motor now but don t know how to power it beause i m a greenhorn in electronics. You can however make a 6 wide board and use a 4 hinge but you may give up some stability.

The mount shown here employs a type 4 double arm design. So my question is how to connect the motor which comes with two wires of about 18cm length to the power socket and how to switch between cw ccw. The double arm design was first described in an article by dave trott published in the february 1988 issue of sky telescope magazine.