Shelyak Alpy 600 The Alpy 600 and Demetra software (developed by Shelyak Instrument for the ALPY 600 spectrograph) will allow you to produce spectra scientifically exploitable. The Alpy 600 opens the doors to Astrophysics: explore different types of stellar objects (stars, galaxies, nebulae, planets, comets, and more), compare the different spectral types, observe absorption and emission lines, see how (some) stars evolve from one day to the other – the possibilities are limitless. The Alpy 600 is performant, modular, compact (a few cm long), and easy to use slit spectroscope. These specifications make it ideal to get started in astronomical spectroscopy… but not only. This real scientific instrument, and will be with you for a long time. Its Resolution Power (R=600) allows it to cover all the visible domains and even more (from 375nm in the near UV to 750 nm in the near IR). You will be able to distinguish many details in the spectral profile. The resolution is 1nm. The dispersing element is a grism, which is the combination of a prism and a diffraction grating (600t/mm). The slit allows isolating a fringe of the light source. It brings several advantages: we isolate the object which we wish to observe, we can work on extended objects (nebulae, planets), we can take spectra of calibration light… thanks to the slit, the quality of the spectrum becomes independent from observing conditions (seeing, problems of telescope tracking, and so on). Alpy 600 is delivered with several exchangeable slits (see photo on the left), to cover numerous situations of observation. The compactness and the lightness of the Alpy 600 make it compatible with small instruments (telescope from 80mm of diameter), on modest mounts. You will reach faint objects in a few minutes (even a few seconds) of exposure time. The optics of Alpy 600 was specially designed to give the best image quality, on the whole visible domain, with a large aperture ( F/4). You will be surprised by the quantity of information you can extract from a so small spectroscope! This quality is such as numerous scientific publications are based on observations with the Alpy 600. Alpy 600 is robust, almost not sensitive to temperature variations, and requires few tunings. It makes a spectroscope easy to use, to obtain quickly spectacular results. The usage is still simplified thanks to the (free) Demetra software. This software helps you during your observations from the acquisition up to the reduction of data. The Alpy 600 can be completed by two optional modules: the guiding module and the calibration module The purpose of the guiding module is to visualize the telescope field of view, and thus to select, then to track the star you want to observe. The calibration module allows making spectra of flats and calibration lamp (Argon-Neon), to make a quick and precise wavelength calibration of your spectra. Technical Specifications Resolution power: R~600 (resolution around 1 nm) for 25µm slit Aperture: F/4 Slit with several positions: 25µm hole; slits 25µm, 50µm, 100µm, 300µm slits (5µm tolerance); 3mm hole (slitless mode) Slit length: 3mm Weight: 200g Size: 65mm long with a diameter of 45mm Standard 1.25″ nose piece, or f M42x0.75 thread, backfocus (front 1.25″ adapter edge to slit): 3.8mm Acquisition CCD camera M42x0.75 mount, backfocus 10.5-21mm Total backfocus (with the calibration and autoguiding module) : 64mm In the Box Shelyak Alpy 600 Manual & Warranty Shelyak 1-Year Warranty
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