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Takahashi 645 Reducer-CA 0.72X The Takahashi 645 Reducer-CA 0.72X reduces the focal length of the CCA-250 telescope by 0.72X, increasing the s...

Takahashi 0.73X Reducer CR The Takahashi Reducer CR 0.73X is a is compatible with the Mewlon 250 CRS and FSQ-106EDX4 telescopes, providing a f...

Takahashi F/3 0.6X Reducer for FSQ-106 & FSQ-130 The Takahashi F/3 0.6X Reducer for FSQ-106 & FSQ-130 converts the FSQ-106 and -130 refract...

Takahashi 645 Reducer-QE  0.72x  The focal reducer for medium-format imaging with the FSQ-106EDX4 refractor   The 645RD QE0.72x focal reducer is a...

Takahashi Reducer-QE 0.73x The Takahashi Reducer-QE 0.73x reduces the focal length of the FSQ-106ED and FSQ-85ED telescopes by 0.73X, increasing th...

Takahashi FC-35 0.66x Reducer The Takahashi FC-35 0.66x Reducer is a 0.66X reducer designed to work with the FC-100DF, FC-125, FS-102, FS-128 and F...

Takahashi 76D 0.73x Reducer   The classical focal reducer of Takahashi FC-76D and FC-100D refractors   The 76D RD reducer is dedicated to Takahashi...

Takahashi Power Supply 115V AC to 12V DC  12V Power Supply for the Takahashi Telescope Mounts. Mounted inside a Seahorse waterproof hardcase. In th...

Astronomik OIII 6nm MaxFR CCD Filter There is an ever growing demand for filters suitable for extremly fast optical systems like Celestron´s RASA t...

Astronomik OIII 12nm MaxFR CCD Filter There is an ever growing demand for filters suitable for extremly fast optical systems like Celestron´s RASA ...

Astronomik OIII 12nm CCD Filter This Astronomik OIII-CCD Filter is suitable for imaging of OIII nebulas from observation sites with light pollution...

Astronomik Red Type 2c Filter Our filter set especially designed for astrophotography with CCD cameras. These filters provide a natural color repro...

PlaneWave 2″ Drawtube Spacer (for 2″ visual and imaging accessories) A CCD Spacer that accepts a standard 2″ barrel. These come in lengths of 3.8″,...

PlaneWave Visual Adapter CDK20/24 Visual Adapter, 3.5″ to 2″ (for CDK20/24): This adapter slides into the optional 3.5″ Hedrick Focuser. The adapte...

PlaneWave Visual Adapter CDK17 This adapter slides into the Hedrick Focuser. The adapter steps the 3″ opening down to 2″ for standard 2″ accessorie...

PlaneWave Visual Adapter CDK12.5 Visual Adapter, 2.75 – 2″ – This adapter slides into the Hedrick Focuser that comes standard on the CDK12.5. The a...

PlaneWave IRF90 Visual Adapter 2″ The IRF90 to 2″ Visual Accessory Adapter allows you to attach a 2″ mirror diagonal and eyepiece to your IRF90 rot...

PlaneWave Visual Adapter CDK 14 This adapter slides into the Hedrick Focuser. The adapter steps the 3″ opening down to 2″ for standard 2″ accessori...

Succesfully Starting in Astronomical Spectroscopy – A Practical Guide. This book has been written by François Cochard, general manager of Shelyak I...

Astronomical Spectrography for Amateurs 2003 The french national research organization (CNRS) organized the first Pro/Am astrophysics school in May...

Shelyak Bulb for Flats Spare bulb, alone.  In the Box Shelyak Bulb for Flats Manual & Warranty Shelyak 1-Year Warranty

Shelyak Focal Reducer 0.63x  This reducer is made of a 3-lenses apo, coated against reflections. Mechanically, it is mounted directly behind a ...

Shelyak M42 / EOS Ring  M42 x 0.75 thread / EOS ring.It allows to mount a Canon EOS Digital SLR on a LISA or Lhires III spectroscope. In the Box Sh...

Shelyak C/CS Adapter  5mm extender to use a C-mount lens on a CS-mount camera..Often used with M42/C ring. In the Box Shelyak C/CS Adapter Manual &...

Shelyak M42 to C Mount adapter It is used with classical CCD camera with M42 thread – such as Atik Titan to connect to Lhires III guiding, LISA gui...

Shelyak T-Adapter Mount your eShel fibre injection system , ALPY 600 or LISA spectrograph on a Schmidt-Cassegrain Telescope (typically with a 0.63x...

Shelyak Ring M42 Male to EOS Female Included in eShel spectroscope delivery. To connect acquisition CCD camera in M42 with eShel spectroscope. Tech...

Shelyak Adapter M42-31.75  Can also connect a SLR (digital or not) to a Star Analyser. Included in Alpy delivery. Technical Specifications...

Shelyak Main cable for the SPOX Module Cable to connect the SPOX module to the LHIRES III. Cable including at both ends, a Tiny XLR 4-pin female ...

Shelyak Thorium-Argon Bulb  Spare bulb, alone. Requires a High Voltage power supply with HCL lamp cable. This bulb is included in the eShel calib...

Shelyak Order filter kit 530 nm for UVEX  530 nm order filter kit for UVEX Order filter for UVEX intended to remove second order  from the spectrum...

Shelyak High Performance Slit 23µm  High performance 23µm slit compatible with ALPY 600 and UVEX spectrographs This 23µm “high performance” slit ...

Shelyak Photometric Slit for Lisa & LHIRES III Set of additional slits for LISA or Lhires III spectroscopes with four “dual slits” specially de...

Shelyak Slit set for LISA & LHIRES III   Set (19/50/75/100 µm) of wide slits for LISA or Lhires III spectroscopes. To be combined with slit hol...

Shelyak Standard Slit for LHIRES III / LISA  Standard slits set included in Lhires III and LISA spectroscopes.With an additional set, you can make ...

Shelyak Backfocus for LHIRES III and LISA Spectroscope Adapter to mount a CCD acquisition camera with backfocus on a LHIRE III or a LISA spectrosco...