Polar Align Tray with Multiple Accessory Attach Features

This 3d printed tray allows several ways to polar align an Explore Scientific (or similar) telescope. This tray attaches to the ES cradle ring handle with two 1/4-20 x 0.75" round head screws and nuts. Once installed, the tray has an L-shaped wall which an iPhone (or Android) can be aligned against. The iPhone will then be aligned with the axis of the telescope. Apps such as Polar Scope Align Pro (or similar) can then be used to perform the polar alignment. This is extremely useful when doing an alignment during the day or when stars aren't visible. Additional mounting features are included for attaching a Red Dot finder or a Telrad finder. These can be used in addition to the align tray to pinpoint stars. I have also provided a 3/8" mounting hole for those wishing to attach a ball mount and DSLR camera. These multiple attaching features make this tray a valuable addition to your telescope setup and it makes alignment much easier. I've also included a thumb screw collar whi