Shelyak eShel Spectrograph System – No Guiding Camera Discount

Shelyak eShel Spectrograph System – No Guiding Camera

Shelyak eShel Spectrograph System

The Shelyak eShel is the perfect spectroscopy solution specially designed for astronomy. This unique and highly functioning instrument will allow you to productively run your spectroscopic observations. Shelyak designed this spectrograph with Christian Buil, a highly recognized optician expert. The software module has been written by Michel Pujol, an expert in Tcl/Tk and AudeLA platform. They both complement Shelyak’s expertise to bring you the best solution in Echelle spectroscopy for astronomy! (Sample Echelle spectrogram in the Gallery image.) The choice of optical fiber has been made to increase radial velocities measurement accuracy and for better comfort in using the eShel.

This Shelyak eShel Spectrograph System Consists of Four Modules

Fiber Injection & Guiding Unit

• M42 T-adapter telescope interface
• 43 mm backfocus
• Mirror with light going through a 50 um hole for the f/6 standard version
• Calibration fiber input (remote controlled mirror position)
• Fiber optics
• 50 um object fiber
• 200 um calibration fiber
• Fibers protected by metal/plastic casing
• FC fiber connectors
• Guiding Camera is not included in this package

Calibration Unit

• Thorium-Argon lamp with high voltage power supply for precise calibration
• Flat lamp for Echelle order geometry and blaze processing
• Electronic to control remotely calibration frame acquisition

Eschelle Spectrograph

• Cross-dispersed echelle spectrograph
• f=125 mm collimator (f/5)
• R2 high efficiency echelle grating
• Coated prism cross-disperser
• 85 mm f/1.8 objective
• Compact
• High power of resolution R=10000
• Visible domain (around 450 to 700 nm)
• Optimized for large telescopes (50 um fiber)
• KAF1603me chip based (size >13 x 9 mm)
• QSI 516ws or SBIG ST1603me camera recommended (not included)
• Canon EOS lens interface with standard SLR backfocus

eShel Software

• Easy to use
• Open source, based on AudeLA platform and Tcl/Tk language
• Works on MS Windows platform
• Multi-language support
• Remote-controlled operations
• Automatic spectra reduction procedure after acquisition
• FITS file support with multiple HDU
• Export individual orders or merged spectrum

Shelyak Instruments Product Number: ES0006