Shelyak Calibration Unit for eShel Spectrograph

More Views

Shelyak Calibration Unit for eShel Spectrograph
Item # SL-PF0012
0 Questions(s)

Special Order

  • The Shelyak ThAr, or Calibration Unit, is used in conjunction with the eShel Spectrograph to calibrate the spectrum.
  • The Shelyak eShel Calibration Unit includes a Thorium-Argon (ThAr) lamp with a high voltage power supply, a Tungsten lamp, and several LED lamps.
  • The calibration unit itself has four switches. One to activate the mirror in the FIGU, one for LED, one for ThAr, and one for Tungsten.
  • Electronics are included to remotely control calibration frame acquisition.


Shelyak Calibration Unit for the eShel Spectrograph

A precise calibration lamp is required to calibrate the spectrum by associating the effective wavelength to any point in the spectrum image. This is done with a Thorium-Argon (ThAr) lamp so that the result will provide a lot of spectral lines in each order. This will be used to associate the wavelength to each pixel position in the order (the calibration law in each order is modeled by a polynomial law).

When you first receive your calibration unit, the Thorium-Argon lamp is packed separately in a protective box. Make sure to keep the box and use it whenever you have to transport the calibration unit.

Two other lamps are included in the calibration unit:

  • A Tungsten (halogen incandescent) lamp. Software will correct each order blaze function using the smooth continuous spectrum of this tungsten lamp, which is close to a 2800K planck function.
  • Several LED lamps which, when used with the Tungsten lamp, will provide more light to the blue part of the spectrum to ensure each order is well defined during the geometry section of the processing.

Additional Information

Additional Information

Manufacturer Shelyak
Spectrograph or Accessory? Spectrography Accessory
Spectrography Series Accessory eShel
Warranty 1 Year Warranty
Included Items

Included Items

  • High Voltage Power Supply
  • Calibration Unit with Four Switches
  • Thorium-Argon Lamp
  • LED's for the flats
  • RS232 PC Interface
  • Miscellaneous Cables
Questions & Answers

Product Questions

No questions yet. Be the first to ask the question!
Support / Downloads