The Starlight Xpress Spectrograph PRO is a state of the art version of the SX Spectrograph with automated features added into the mix! Among some of the features include changing slits, adjusting camera focus and wavelength setting and switching on the flat field lamp remotely! The spectograph is specially designed to render spectral lengths of 31mm from 340 to 900 nM. While most of the visible spectrum can be seen with the TRIUS PRO-694, simply adjusting  a sliding camera carrier with motor driven threaded drive screws will show the rest of the spectrum. A provided 6 position slit wheel allows user optimization based on specific applications.  When using the 20 microns slit, the superior R factor is 1500 - 2000 depending on the focal ratio of the telescope. Included is a Lodstar PRO guide camera which observes the imaging field via 10% / 90% beam splitter cube. The position co-ordinates of the slit are marked on the cursor box by the PHD2 tracking software making it easy to find the observer's intended object to view and find a guide star for tracking.

• Self-collimating concave reflective grating spectrograph with a highly corrected flat field toroidal grating. Minimal attenuation of near UV, due to mostly reflecting optics. Built-in Lodestar PRO Guide Camera and calibration source.
• Grating specifications: Groove pitch – 550 grooves per mm at centre of grating. Blaze wavelength – 400 nM.
• Spectral efficiency at 400 nM – Greater than 50%.
• Useful spectral range – 340 to 900 nM
• Useful grating aperture – 26 x 26 mm.
• Rotary slit wheel with 6 slit positions: Position 1 – 20 uM x 1 mm – Position 2 – 30 uM x 2 mm Position 3 – 55 uM x 2 mm – Position 4 – 115 uM x 2 mm Position 5 – 325 uM x 2 mm – Position 6 – 3mm x 3 mm circular
• Input / Output: Female T2 thread (42 x 0.75 mm) input Male T2 thread output
• Input back focal distance – approximately 37 mm
• Output back focal distance – nominally 17 mm, adjustable between approximately 10 and 20 mm
• Power 12v DC at 1 amp max. Positive centre on 2.1 x 5.5mm socket.
• Size – 120 x 115 x 70 mm Weight – 1.17 kg