LISA Spectroscope (VIS)

4 746,00  incl. VAT - 3 955,00  excl. VAT

The LISA is the most sensitive instrument in our product range. Thanks to its internal reducer and low resolution, it is the undisputed master of faint objects such as novae & supernovae, planetary nebulae, comets, symbiotic stars, cataclysmic variables, galaxies…

Complete your LISA spectroscope with the products below:

Additional modules

Additional modules: technical specifications

Shelyak ref.
Acc. type
LISA internal guiding module
Guiding module
Built-in LISA
Internal LISA calibration module
Calibration module
Includes Ar-Ne calibration lamp and flat lamp (tungsten)

Grating module

Grating module : technical specifications

Shelyak ref.

R @650 nm

Dispersion (nm/mm)


Grating LISA 300 t/mm
500 nm


Slits : technical specifications

Shelyak ref.

Material (% reflexion)

Mirror size

AR coating

Multiple slit 15/19/23/35 µm
Chromium (55%)
17 x 17 mm
400 – 700 nm
Slits 15, 19, 23, 35μm
Photométric slit 23/27/31/35 µm
Chromium (55%)
17 x 17 mm
400 – 700 nm
23/200, 27/250, 31/300, 35/350μm
Wide slit 19/50/75/100 µm
Chromium (55%)
17 x 17 mm
400 – 700 nm
Hole 19μm + slits 50, 75, 100 μm
LISA slit holder
To add for all optional slits

Recommended guiding cameras

Recommended cameras: technical specifications

Shelyak ref.

Acc. type




Camera QHY174-M GPS
Guiding camera
The high-level solution for tracking faint targets (cooling allows > 30s exposure times)
Camera ASI174 mini
Guiding camera
LISA’s “standard” guiding camera (with NO cooling).

Recommended acquisition cameras

Recommended cameras: technical specifications

Shelyak ref.

Acc. type




Caméra ASI 533 MM Pro
Science camera

Other accessories

Other accessories: technical specifications

Shelyak ref.

Acc. type

12V/7A power supply + 4-way cable
Power supply
12V power supply (7A), to power several accessories (cameras, lamps, etc.). Supplied with 5m silicone cable and 4 connectors (2x 2.5 mm and 2x 2.1 mm)
Spare lamp for flats
Spare lamps
Halogen lamp
Argon-Neon lamps
Spare lamps
Spare calibration lamp (Argon & Neon). Requires the calibration module.
SPOX module short cable
Other add-on modules
SPOX module for flat and calibration lamps remote control. Must be used with calibration module (SE0103). Version with short cable (80cm), if the SPOX module is installed onto the telescope.
SPOX module long cable
Other add-on modules
SPOX module for flat and calibration lamps remote control. Must be used with calibration module (SE0103). Version with long cable (5m), if the SPOX module is installed beside the telescope (on a table for instance).
0.63x SCT F/6.3 focal reducer
Other add-on modules
Focal reducer for an SCT (F/10) telescope. Changes the F-ratio from F/10 to F/6.3.

All about the LISA spectroscope:


A high-luminosity instrument

The LISA spectroscope is dedicated to the spectroscopy of faint objects such as comets, novae, supernovae, faint variable stars, the redshift of distant galaxies or quasars, or the confirmation of planetary nebulae. Its optical design has been specially studied for the observation of this type of object, with custom-made optics. Its calibration module (optional) enables easy calibration using an Argon/neon lamp, providing a large number of emission lines over the entire LISA spectral range. The same module is equipped with a tungsten lamp for flats.

A wide spectral range

With a resolving power of R = 1,000 with a 23 µm slit, its spectral range covers the entire visible range between 400 and 700 nm, and even extends into the near UV and near IR.

Example of a raw spectrum on BD+59 2829, a Be star of magnitude V=9.9 obtained with a LISA


The LISA’s F/5 aperture makes it particularly well suited to faint objects, and it can be installed on telescopes or scopes natively f/5, but also on any type of Schmidt Cassegrain or Ritchey Chretien telescope using a focal reducer to bring the native focal length of this type of telescope, generally f/10 or f/8, down to a focal length close to 5.

Guiding system

Thanks to its mirror slit, the Lisa accurately positions and holds the target in the slit. A guiding camera (not supplied) enables the telescope’s movements to be controlled (autoguiding), ensuring optimum observation.

Field of the LISA autoguider with the slit positioned vertically, on a Seyfert galaxy

Interchangeable slit

The interchangeable slit supplied as standard (15-19-23-35µm) makes it possible to adapt the instrument to any observational situation, giving priority to resolution or brightness if required. Other slits are also available as options (wide slits, photometric slits), to further extend the possibilities.

Mechanical interfaces

The LISA is supplied as standard with a 2″ nosepiece. The nosepiece can be removed to access an T-mount female thread (M42x0.75mm thread). For mounting on a classic Schmidt-Cassegrain telescope (2″ external thread), you’ll need the BA0027 variable T-adapter.

The interface with the acquisition camera is also a T-mount thread (M42x0.75mm) with a 54.9 mm backfocus, while the guiding camera port is C-mount with a 17.5 mm backfocus.

For ATIK cameras, you need a 13mm long ring (13mm mechanical backfocus), supplied with the LISA. We offer a wide choice of adapter rings in our accessories catalog.

Going even further with LISA

In addition to the astrophysical knowledge that LISA can provide, it is also a tool for collaboration between amateur and professional astronomers: study of nova, supernova, comets, symbiotic stars, confirmation of planetary nebulae… Numerous scientific publications have been produced on the basis of LISA observations. like this one. Other publications or first spectra are regularly produced with a LISA. For instance:
ATEL Observation Ha in SS433
Optical Spectroscopy of Classical Nova ASASSN-16ig (Nova Sgr 2016 no. 2)
Monitoring of the slow classical nova Sct 2017

LISA spectrum of a Seyfert galaxy (z=0.061) of magnitude V=15.2

The support of a large community

LISA is used all over the world, and you can find many examples of its use and advice on the spectro-L discussion list or on the spectroscopy forum: ARAS


  • Collimator F=130mm F/5
  • High efficiency thanks to internal focus reducer
  • Resolution power R ~1000 with a 23 µm slit
  • Grating 300 tr/mm blazed à 500nm
  • Visible domain (400-700nm)
  • Slit 15/19/23/35µm
  • Slit length : 4 mm
  • Weight: 1.4 kg (w/o caméra)
  • Telescope Interface T-mount (M42*0.75), backfocus 41mm
  • Science camera interface, T mount, M42*0.75, backfocus 54.9 mm
  • Guiding camera interface, C-mount, backfocus 17.5 mm


  • LISA Spectroscope
  • Interchangeable slit : 15, 19, 23, 35μm
  • Adapter for 13mm backfocus camera


  • Calculating the redshift of distant galaxies and quasars
  • Confirmation of Planetary Nebula candidates
  • Spectra of faint Be stars
  • Studies of star spectral classes
  • Spectra of faint objects (Novae, Supernovae, Comets)

Retour d’expérience d’utilisateurs :

Report on mission to St-Véran observatory : Mission report to C2PU Calern :

F. Teyssier:

C. Buil:

F. Teyssier article:


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