All these cables are generic and can be purchased from any supplier. using Celestron CGX mount with PHD2 - posted in Beginning Deep Sky Imaging: Hey All , Ive been using a CGX mount for the last year ; but now Im going to add a guide scope into the system . For CGX and CGX-L mounts… I do not have a view of Polaris from my home ; and so , I use Celestrons all star polar alignment routine . PC equipped with USB 2.0 or 3.0 Type A ports (only for cable connection), and one of the three cables listed below. The CGX was designed to better support your telescope for both visual and astro-imaging pursuits. There was a recent thread on using the PECTool with cgx-L - and my main point about it with all celestron mounts including this one is that you may need to guide through the st4 port while you do the training. Product description The Celestron CGX-L GoTo EQ Mount improves on the venerable CGX platform to provide users with a heavy-duty research-quality mount for larger optical tube assemblies (OTAs), accessories, and imaging rigs. INSTRUCTION MANUAL Model #91531 EQUATORIAL MOUNT AND TRIPOD. Choose the cable that works with your Celestron telescope. The CGX-L fits the large Celestron CGE-style dovetail and the smaller CG-5-style dovetail, also common to the In this day and age I really don't think anyone needs to resort to manual guide corrections … Celestron's engineering team applied their years of experience designing German Equatorial mounts to the all-new CGX EQ, a culmination of all the advancements made to our technologies, value, and ease-of-use.