The Long Slit Mode

Long slit spectrometer is based on a 600 lines/mm grating blazed at 5000 Å, covering 4340-8970 Å spectral range with a typical spectral resolution is R=1200*.
First and second orders of the grating are split with a BK7 wedge prism with a 11° vertex angle. A Argon hollow cathode lamp is used for wavelenght calibration.

* with the popular KAF8300 CCD chip (18x13.5mm).

resolution resolution

False colors spectrum of Nova Cyg 2014 (above) and false colors spectrum of the twilight sky (below) recorded with a SBIG ST-10 CCD camera.


Wedge prism guarantees no overlapping between the first and the second orders of the grating.

Find out more:

Echelle mode

Long Slit mode

Technical specs

Example targets