Orion 7398 2.1 Pound Counterweight for EQ-1 and Min-EQ Mounts;

The 2.1lb counterweight for the Orion EQ-1 and Min-EQ equatorial mounts lets you take full advantage of the equatorial mount's tracking abilities, even when you have a small amount of equipment attached. Ideal for use with smaller equipment payloads such as a DSLR camera or small telescope, the narrow 2.1lb counterweight will not make contact with the EQ-1M motor drive housing during extensive motorized tracking of celestial objects. If you are, for example, performing wide-field astrophotography using a DSLR camera and a wide camera lens, this narrow counterweight provides enough weight to balance the DLSR properly on the equatorial mount, and it won't interfere with the EQ-1M motor drive housing while tracking. Many standard 5lb and heavier counterweights are too heavy to achieve proper balance with lighter equipment payloads on an equatorial mount. In most cases you must position the heavy counterweight all the way up the counterweight shaft to optimize balance. In this position, the standard wide counterweight can make contact with the EQ-1M motor drive, making it impossible to track an object for extended periods of time. This narrow 2.1lb counterweight is perfect for achieving proper balance with lighter equipment, and its narrow 46mm (1.8") diameter will not make contact with the EQ-1M motor drive, no matter what the orientation is of the Right Ascension axis. Now you can track celestial objects all night long without having to worry!