NORTH AND SOUTH MOUNT AND BLADE HOW TO

Next you need a board for the platform wide enough for the ground board feet to sit on plus a distance roughlyВ Rn/4 to allow an hour of travel. (platformВ height is a negative number) Do this on a spreadsheet and change the value of X until the torque is zero and then X is the COG height above the floor. Torque= (OTA height вЂ“X)*OTA weight + (rocker height-X)*rocker weight + (platform height вЂ“X)* platform weight You donвЂ™t know the weight of the platform since it isnвЂ™t built but you can estimate it by weighing a square of plywood that your ground board sits on comfortably (probably ВѕВ inch). Measure the distance from the balance point to the floor. The rocker box is weighed and balanced on its side using a wooden dowel. The scope OTA is easy you just measure to the center of the alt bearings. First you need to weigh each component and measure each distance from the floor. It doesnвЂ™t need absolute accuracy but then it shouldnвЂ™t be ignored. If not the telescope may want to tip over or drive poorly. I donвЂ™t think IвЂ™ve ever made 2 exactly the same but the method doesnвЂ™t change.Дetermine the COG: You must first calculate the COG of both the telescope & rocker box and the moving part of the platform.

NORTH AND SOUTH MOUNT AND BLADE HOW TO

There are many good sources on the internet for how to make a platform but I will describe how I build mine. You can make a platform with only one bearing and a pivot but a 2 bearing platform is more compact. The platform bearings are sections of this cone. The equatorial platform is merely a section of a cone whose axis is aligned with the north celestial pole and the COG of the telescope is on this axis.

It is so much nicer not to have to continually nudge your scope around especially at high power and making a platform is remarkably simple. YourВ DobВ isnвЂ™t really complete until youвЂ™ve made an equatorial platform to go with it.

North and south mount and blade