Celestron AC Adapter - 5 Amp Continuous power, Black (18780) 5 amp AC Adapter for use with the following Celestron computerized telescopes: CGEM Series, CPC Deluxe HD Series*, CGEM II Series, CGX Series, and CGX-L Series *CPC Deluxe HD Series- 2 Amp adapter (#18778) is sufficient for most visual observing with a balanced telescope. For astro-imaging using additional equipment, the 5 Amp adapter (#18780) is recommended. Threaded barrel connector on DC plug prevents power-offs due to inadvertent cable pulls Delivers up to 5A @ 12 VDC, plenty of power to run our biggest mounts with heavy loads Switching-type AC-to-DC power adapter provides more power with less weight than transformer-style power adapter