The Star Analyser is a diffraction grating that generates a star spectrum simply from the light passing through it. Therefore, the Star Analyser simply needs to be inserted into the 1.25" tube of the eyepieces or camera like a filter. This works via the usual filter thread - it couldn't be easier!
Since its launch in 2005, the Star Analyser 100 has introduced thousands of amateur astronomers to the fascinating field of spectroscopy. During this period, the instruments used by amateurs have evolved: larger aperture telescopes, larger camera sensors and filter wheels with short optical lengths. A new model of the Star Analyser, the Star Analyser 200, was therefore developed. It has the same blaze diffraction grating technology as the Star Analyser 100, but with twice the line density. The Star Analyser 200 is designed for users who have difficulty achieving the optimum path length for the Star Analyser 100. The Star Analyser 200 produces the same length of spectrum, but requires only half the distance of the Star Analyser 100.
Feature of the Star Analyser 200-F:
- Low overall height: 7.7mm including thread, therefore also suitable in narrow filter wheels. For comparison: The Star Analyser 100 has 11.2mm. However, this low height means that, unlike the Star Analyser 100, there is no additional filter thread in the housing for additional accessories.
- Highly efficient Blaze grating with 200 lines per millimetre
- The direction of the spectrum is marked on the filter ring for ease of use
- Optimised for large apertures, long focal lengths and large sensors
- Star and spectrum are recorded in one image, which is helpful for calibration
For most users, the Star Analyser 100 remains the model of choice, especially for those who use cameras with small sensors and screw the Star Analyser directly into the filter thread of the camera's eyepiece holder.
