Review on 🔭 Celestron 93522 Dual Axis Motor Drive: Advanced CG4 Astrophotography Enhancer by Eric Temple

I first bought these motors so I could use my CG-4 to track planets hands-free. What I didn't expect was the excellent planetary imaging he could help with. If you're looking for an AP entry featuring planets and the moon, look no further. The motors are very easy to install, giving you more time. looking for your favorite objects. I purchased 4 Tenergy Centura D rechargeable batteries to power the setup which last many days before needing to be recharged. The Dec and RA motors are mounted on brass shafts to which your mount's slow motion grips attach. On the CG-4, this prevents you from using the slow motion controls to launch. The dec motor has a clutch that can be disengaged so you can follow the dec (up and down) manually. The RA does not have such a clutch, so if you want to manually track the RA (left and right) the clutch must be loosened with an Allen key. Also note that this setting cannot be changed. It just tracks, and even at the fastest settings (8x which I use to render) you can barely tell it's moving. To quickly aim at an object, you need to hold the telescope tube with both hands and aim at the desired target. These engines also open the door to various objects of the solar system for novice astrophotographers. With accurate polar alignment, I was able to shoot up to 3 minute subs. I'm sure he's capable of more, but that's all I've done. If you want to keep Saturn centered in your eyepiece or try your hand at depicting the planets; There is no doubt that these engines are more than capable. For $100 they've already more than paid for themselves. UPDATE: February 25, 2014 - I have since upgraded to the Advanced VX mount but have returned to update this review. First of all, don't buy the batteries I recommend. They only supply 4.5V power when the motors require 6V; Even when fully charged, this is still not enough. Instead I bought a cheap 6V power supply (6V 1A power supply to 5.5/2.1mm DC power supply) which worked like a charm. Although I have upgraded to a larger mount, I still highly recommend this product.