View Single Post
  #40  
Old 21-11-2014, 08:27 PM
pelu's Avatar
pelu
astronomical dummy

pelu is offline
 
Join Date: Jun 2008
Location: Canyelles, Barcelona, Spain
Posts: 107
An idea from many years ago:

If you replace the solid steel axis of the barn door for a steel pipe, you will obtain a hole that can be used as a polar finder.

I my wood traking toy (I made it for the Hale-Boop ...) I use, instead a barn door, two wahsers in order the angle I can see trought them is the same that the circle that Polaris have. Placing Polaris in the adequate border of the second washer I achieve a very precise Polar alignment, enough for a 300mm. telelens.

With the apropiate distance between the M6 screw to washers for to need a complete tour each minute and a clock glued in the know I can have a good traking simply moving the know for to have all the time the ¿second arrow ? of the clock pointing to me.

https://lh4.googleusercontent.com/-b.../58soporte.jpg


Easiest, but not so funny to do is the use of half Superpolaris mount.

https://lh3.googleusercontent.com/-n...ont-eclpse.jpg
Reply With Quote