In the latest Aug 2011 issue of Sky & Telescope, there's an article titled "A Simple Hinge Tracker" by Gary Seronik. (Page 64)
Are those items in his parts list readily available in Singapore?
And this is the link to his "More Hinge Trackers" online article
http://garyseronik.com/?q=node/152
"A Simple Hinge Tracker" by Gary Seronik
"A Simple Hinge Tracker" by Gary Seronik
http://www.astro.sg
email: gary[at]astro.sg
twitter: @astrosg
"The importance of a telescope is not how big it is, how well made it is.
It is how many people, less fortunate than you, got to look through it."
-- John Dobson.
email: gary[at]astro.sg
twitter: @astrosg
"The importance of a telescope is not how big it is, how well made it is.
It is how many people, less fortunate than you, got to look through it."
-- John Dobson.