TS Optics artificial star for collimation and telescope tests

This artificial star enables you to test your telescope and also to adjust it perfectly during daytime. Use the valuable clear nights for working with your telescope.

By day the adjustment of the telescope is much more accurately than at night, as you work in closed rooms and have no problem with air turbulence.

Features

• Brightness is continuously dimmable, thus the contrast can be set optimally
• Precise pinhole with 22 µm diameter for exact results yet sufficient light
• The light source emits neutral white light(LED)
• Helpful photo tripod connector with female 1/4" thread for versatile fastening and mobile use
• 1/4" brass extension, thus attaching to the photo tripod always succeeds
• Solid metal housing for a long service life
• Powered by two common 1.5 V AA batteries (user supplied)

Usage

In order to collimate a telescope or to detect optical aberrations such as astigmatism or coma you need only a short distance between the telescope and the artificial star. In these cases due to the extended focal plane you may need extension tubes in order to reach focus. 

Spherical aberration is very difficult to detect using an artificial star. You should set up the star at a much greater distance from the telescope. We recommend a distance in meters that is equal to one third of the aperture in millimeters. For instance, for a telescope with 200 mm aperture you should set up the artificial star at least 66 m away from the telescope. Here we recommend using a real star.

Delivery contents

• Artificial star
• 1/4" extension
• Plastic box