Raspberry Pi Star Guider with Offset Adjustment Platform

In short
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Offset adjustment platform for Raspberry Pi auto guiding system.

Overview
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This is an integrated solution where the RPi board and the guide scope are being mounted onto the telescope. The goal is to allow fine offset adjustment of the guide scope, and to allow wireless, computer-less auto guiding.

### Offset Adjustment
The platform includes a azimuth adjustment mechanism through a worm gear - spur gear set, and a altitude adjustment (tilt adjustment) through a curved sliding rail. This solution is more explicit and easy to control compare with the 2-pivot guide scope holder system.

### Auto Guide
This system utilizes Raspberry Pi 3 and Raspberry Pi Camera (support both v1.3 and v2.1) as the auto guiding infrastructure. You can install your favorite OS (Ubuntu Mate, Raspbian, etc.), your favorite guiding software (OpenPHD, lin_guider, etc.) and any guide scope with a C/CS mount upon your focal length needs.

My own solution tested on Ubuntu Mate with