Icarus Slitless Spectrograph Presentation
Icarus Slitless Astronomical Spectrograph Description - technical specifications
The main body of the Icarus Slitless Spectrograph is a robust metallic box. The optics of the Astronomical spectrograph are adapted on the box and also the interchangeable objective lens and the dovetail (Vixen type 45 mm) mount adapter.
The interchangeable objective lens (which is included on the package) is mounted on the main box with the use of a lens adapter ring. On the other side of the objective lens, the user can adapt any DSLR camera, especially Canon and Nikon etc. (with the proper camera adapter ring, also included on the package). The user can adapt almost any objective lens on the ISS, with various focal lengths ranging from 100 mm up to 300 mm (using the proper lens adapter ring). Using a higher focal length increases the dispersion, resulting to better resolution (decreased Å/pixel ratio).
The Astronomical Spectrograph box can be adapted on any equatorial or alt-azimuth mount via the dovetail or on a camera tripod via a standard ¼ inch tripod screw.
The ISS was designed and constructed based on the research slitless spectrograph prototype. It is definitely not a toy. The data collected from solar eclipses with the use of ISS, can be useful for the astronomical community.
The Icarus Slitless Spectrograph has good quality optics for recording very sharp spectral images. The light analyzer is a reflection grating with dimensions 25 mm x 25 mm (or 50 mm x 50 mm), with 300 Lines/mm or 600 Lines/mm and is capable for capturing the full range of visual spectrum (4100 Å - 6800 Å). For higher resolution spectra (resulting to capturing part of the visual spectrum), can be achieved by using a grating with 1200 L/mm or 1800 L/mm. The design of the Astronomical Spectrograph is of the ‘’direct vision’’ type, with well aligned and fixed optics and pre-calibrated in our optics laboratory for the highest efficiency.
The dimensions and the contents of Icarus Slitless Spectrograph
The dimensions of the main box are: 25 cm x 20 cm x 10 cm, (10 in x 8 in x4 in). The total weight of the box with lens is about 2.3 kg (5 lbs). The postage box contains:
- The main metallic box with the optics,
- the ISS interchangeable objective telephoto lens, with the proper Canon or Nikon camera adapter (adapted on the lens),
- the lens adapter ring
Every ISS item has aligned optics, well orientated objective lens and it is tested in our laboratory optical bench, with artificial solar eclipse geometry and lighting with several emission spectral lamps and calibration lasers.
Extra Parts of the Astronomical spectrograph - commercial applications
With an adaptation of an additional optomechanical system (sold separately), the Astronomical Spectrograph can be transformed into a typical slit or fiber spectrograph.
- The ISS Slit Optomechanical System, (sold separately) is a new front plate of the ISS main box, with the proper optomechanical parts to transform the slitless spectrograph in to a slit or fiber spectrograph for a lot of applications: Measuring spectral absorption / transmission of liquids, optics laboratory observations, emission lamps observations-testing, educational use etc. After this optomechanical system installation in a short time, the Iss can be transformed into a Slit or Fiber Spectrograph. The additional package contains the Optomechanical System, the Slit or the Fiber adapter with 1.5 m fiber patch cord 125 / 65 μm or 125 / 50 μm, neon and mercury lamps with the corresponding spectral maps.
The Fiber Optomechanical System of ISS, collects the light of Neon lamp
Emission spectra of Mercury and Neon lights by the Icarus Fiber Spectrograph
- Fiber Unit for telescopes. A fiber optomechanical system adapted on the focuser of a telescope, can be used for capturing the spectra of the stars, planets, nebulas, comets etc. Through the Fiber Unit, the collected light from the telescope is transferred via the fiber patch cord into the ISS. The Astronomical Spectrograph can be placed up to 50 meters far away from the telescope. The Fiber Unit has also an aiming system port for aiming the telescope to the target. The additional package is accompanied with neon and mercury lamps with the corresponding spectral maps and a 1.5m fiber patch cord 125/65μm or 125/50μm.