Manufacturer of diffraction gratings, spectroscopes and educational science equipment
These spacers allow us to achieve the proper spacing between the Star Analyser and the CCD sensor chip.
Locking Ring - External Threads
Externally threaded locking ring for a 1.25" filter cell.
Locking Ring - Internal Threads
Internally threaded locking ring for a 1.25" filter cell.
Designed for the advanced user looking for the maximum resolution, this device centralises the spectrum on the optical axis and reduces the small amount of coma sometimes visible in the red region of spectra captured with the Star Analyser 100.
It is mounted in a 1.25" filter holder for direct attachment to the Star Analyser 100 and has been AR coated on both sides.
Allignment markings indicate correct orientation with the Star Analyser 100. It can be mounted either behind the SA100 (adding 15mm to the distance to the camera sensor) and held in place by an optional locking ring, or ahead of it.
Note that with the prism in place, the wavelength scale becomes significantly non linear so a non linear wavelength calibration should be used.
Shown with 1.25" filter cell
1.25" Mounting Kit
Mounting kit for the Star Analyser 200 and other 1.25" filter cells.
Plates can be easily trimmed to size with scissors.
Users should make sure that their particular model of filter wheel has sufficient clearance. More information on the use of the kit can be found in the the SA200 user manual
1x Mounting plate (65mm2 with 29mm hole)
2x Spacing plate (65mm2 with 37mm hole)
1x External locking ring to fit a 1.25" filter cell