Increase the targeting precision of digital circles (or “Go-To”), del Dobson, with three large adjustable feet to ... 5 euro.

This article is dedicated to those who like me, know how well maybe their learn star hopping, and comfortable pointing in public star partyes is, when sometimes make use of the convenient digital circles passive pointing, or possess telescopes “Go_To”, and therefore knows that, in order to maximize the pointing accuracy, needs to put Dobson telescope in perfect horizontal "air bubble" level . The operation