A good focuser is just as important as the optics. Electronic focus control and precise mechanics are a must, especially for astrophotography. Here you will find a large selection of suitable "hardware".
Starlight Adapter to 2" Schmidt Cassegrain Thread for 2" FTF20.. Focuser... best use with FTF2015BCR Scope specific adapter attaches to the 2"-24tpi thread on the rear cell of Schmidt-Cassegrain/Maksutov-Cassegrain telescopes
Starlight Thermistor for Temperature Control... for Focuser Boss Digital Kit In the software download there is a step-by-step instructions on setting up and running the Temperature...
The external motor controller (XMC) was designed to expand the focus capabilities of the "Ultimate Powerbox v2" (supports a 2nd focus controller) and adds focus functionality to the "Pocket Powerbox Advance".
Works with bipolar or unpolar stepper motors
Full, half, 1/4 and 1/8 step (microstepping)
Large range of supported stepper motors
Connector for environmental sensor
Protected against undervoltage, overcurrent and overtemperature
Made especially for Ultimate Powerbox v2 and Pocket Powerbox Advance