The UVEX is now motorized, and can be operated remotely.

The spectrograph slit has 6 positions that can be easily changed using a Phillips screwdriver (supplied with the UVEX). Several slot widths are available: 25µm, 50µm, 100µm, 300µm, a 25µm hole and a 3mm hole. Other slots are available as options, and Alpy slots are UVEX-compatible.

Mototrization :
The motorized UVEX allows you to select the central wavelength observed (grating angle) and adjust the spectroscope’s focus.

Remote control of integrated calibration module :
The motorization integrates the control of the calibration module (equivalent to the SPOX module). It is therefore easy to make your images of black, flats and calibration, remotely.

DEMETRA remote control Version:
The UVEX motorization module is accompanied by a new version of the DEMETRA software:
– Calibration “by set line”. We establish once and for all the law of dispersion, and we can readjust it on a well identified line. This is useful for covering all areas from UV to IR, when the reference lines are few.
– Motors module control,
– Image sequences, to link several series of images,
– Consideration of CMOS cameras (by the CMED correction step).

Not a DEMETRA user? Don’t panic, Shelyak has thought of you!
We provide you with a small software program, USIS Controller, which allows you to control the UVEX from your computer: USIS-controller
And if you want to integrate UVEX control more deeply into your own environment, the communication protocol between the computer and the UVEX motorization module is documented: this is the USIS protocol.

 

Specifications Cross Czerny-Turner Spectrograph Spectral range : 350 nm à 1µm Spectral resolution with the 600 tr/mm grating R=1700 @ 650nm Multi position slit : 25µm, 50µm, 100µm, 300µm and a hole of 25µm Optimal telescope F-ratio : F/8 Compatible with ZWO, QHY et ATIK camera with a backfocus <14mm Motorized grating: select the central wavelength you want to observe. Motorized focus: fine tune the UVEX focus position, to get the best optical quality. Calibration module: control light source, through the (external) calibration module. You can switch between Sky, Dark, Flat and Calibration. Dimensions (UVEX + Motors module, w/o cameras): 153 x 154 mm Height: 133 mm Weight: 1.46 Kg (w/o camera) Communication protocol : USIS

Camera recommendation The acquisition camera (or “Science” camera) is used to acquire the spectra of the observed object. The criteria for choosing a camera are : The size of the sensor (the bigger the better) The size of the pixels (which gives the sampling) Reading dynamics (the number of shades the camera can see) Quantum efficiency (the sensitivity of the camera to light) Reading noise (the lower the better) Cooling (for long exposures) In each product sheet you will find the camera we recommend – but of course other solutions are possible. More

Included UVEX Spectroscope A 600 tr/mm grating blazed at 500nm mounted on its support A tool set A bag of spare screws as well as 4 screws for fixing the autoguiding module on the UVEX. An adapter ring for ZWO cameras Cable to control the calibration module. Not included Power supply 12V / 1A USB 2 cable connecting the UVEX to your computer Software Download Demetra UVEX Version 7.3.0.0 – 09/2022 USIS controller USIS specification (communication protocol) Demo Pyton script

Optionale Grating Module The UVEX can be used with additional 150 tr/mm, 300 tr/mm, 1200 tr/mm and 1800 tr/mm gratings, in addition to the 600 tr/mm grating supplied as standard with the UVEX. Each grating is supplied with: A grating holder (the grating is delivered mounted and adjusted on the grating holder) A box for securely storing your grating on its holder A cap A plastic vernier corresponding to your grating Grating UVEX 150 l/mm Grating UVEX 300l/mm Grating UVEX 1200 l/mm Grating UVEX 1800 l/mm Compatible with: UVEX motorized UVEX Spectroscope