{"product_id":"shelyak-eshel-ii-spectroscope-pf0011","title":"Shelyak ESHEL II Spectroscope (PF0011)","description":"\u003ch2 class=\"p1\" data-mce-fragment=\"1\"\u003e\u003cspan class=\"s1\" data-mce-fragment=\"1\"\u003eShelyak ESHEL II Spectroscope\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"p1\" data-mce-fragment=\"1\"\u003e\u003cspan class=\"s1\" data-mce-fragment=\"1\"\u003eeShel II is\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cb data-mce-fragment=\"1\"\u003ethe core piece\u003c\/b\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eof your echelle spectroscopy solution  for your astronomical projects. Fitted with a second generation collimator, it takes your spectra to the Hδ line !\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSpectral domain extended from 30 to 55 against 32 to 52 previously.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eResolution higher than 10 000 for orders 33 to 53\u003c\/p\u003e\n\u003ch4\u003eA fiber spectroscope\u003c\/h4\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eIt is based on our strong experience in spectroscopy (with design and manufacturing of the Lhires III and Lhires Lite) and nights of observations including with MuSiCoS \u0026amp; Narval spectroscopes. This practical experience helped us to design a robust and productive solution in the field.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eWe designed the spectroscope with Christian Buil, a higly recognized optician expert. The software module has been written by Michel Pujol, an expert in Tcl\/Tk and AudeLA platform. They both complement our expertise to bring you the best solution in echelle spectroscopy for astronomy !\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eChoice of optical fibre has been made to increase radial velocities measurement accuracy and for a better confort in using the eShel.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003eThe Echelle spectroscopy\u003c\/h4\u003e\n\u003cp\u003eThis technique makes it possible to reach high spectral resolutions because it uses the diffraction orders \u0026gt; 20 of a grating. The spectrum obtained passes through a cross disperser that “cuts” the spectrum in several successive orders by occupying the entire surface of the sensor of the camera. This gives the entire spectral in visible range  on about twenty order (in the case of eShel).\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Schema_Echelle_480x480.png?v=1687886571\" style=\"display: block; margin-left: auto; margin-right: auto;\" width=\"475\" height=\"256\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Schema_Echelle_480x480.png?v=1687886571\" data-mce-style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003cem\u003e\u003cspan class=\"s1\"\u003eSchematic diagram of an Echelle spectrograph\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e(© Christian Buil)\u003c\/em\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\n\u003ch4 style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003eThe Echelle spectroscope\u003c\/h4\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/EshelDetour-231x300_480x480.png?v=1687886661\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/EshelDetour-231x300_480x480.png?v=1687886661\" data-mce-style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003eThe main module that generates the Echelle spectrum. It covers the spectral range from about 450 to 700 nm with a resolution \u0026gt; 10000 (with an ATIK 460 Ex camera in 2×2 binning not included). It has a fiber input on FC \/ PC connector to fix the 50 μm object fiber.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/dsco-1_480x480.jpg?v=1687886698\" style=\"display: block; margin-left: auto; margin-right: auto;\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/dsco-1_480x480.jpg?v=1687886698\" data-mce-style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan\u003e\u003cem\u003e\u003cspan class=\"s1\"\u003eDelta Sco spectrum (Be star). Note the H-alpha line in emission (click on the image to enlarge)\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan\u003e\u003cem\u003e\u003cspan class=\"s1\"\u003eCanon 40D, 9 x 300 s, 8′ SCT télescope (C.Buil)\u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003eThe eShel software\u003c\/h4\u003e\n\u003cp class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eEasy to use, it is based on the AudeLA software  ‘opensource’, written in Tcl\/Tk, works under MS Windows (several languages ​​available), it allows during the acquisitions of spectra, to remotely control the various units (injection unit  and calibration unit).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eSpectrum reduction can be started right after the acquisition by generating a multi-HDU fits file. An export of the individual orders or the combined spectrum (all orders merged) can also be realized.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/eshel_betper_t60-1_480x480.png?v=1687886754\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/eshel_betper_t60-1_480x480.png?v=1687886754\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem data-mce-fragment=\"1\"\u003e\u003cspan class=\"s1\" data-mce-fragment=\"1\"\u003eExample of calibrated spectrum of Beta Persei, between H-beta and H-alpha (click on the image to enlarge)\u003c\/span\u003e\u003c\/em\u003e \u003c\/p\u003e\n\u003ch4 style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003eExample of raw spectra\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/novaDel2013_480x480.jpg?v=1687886878\" alt=\"\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/novaDel2013_480x480.jpg?v=1687886878\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cspan\u003e\u003cem\u003e\u003cspan class=\"s1\"\u003eBeta Lyr – Shelyak [:-)] \u0026amp; P Cygni – 7 x 300 s  8′ SCT   \u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003eExample of animation of a pulsating star\u003c\/h4\u003e\n\u003cp style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eHere is also a good exemple of echelle spectroscopy with an animation of raw images of BW Vul, a pulsating star. 5min expoures, 60cm f\/3.5 telescope at pic du Midi; QSI 516s camera.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e \u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" height=\"237\" width=\"301\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/BWVul-anim20080726crop-1_480x480.gif?v=1687886949\" data-mce-style=\"display: block; margin-left: auto; margin-right: auto;\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/BWVul-anim20080726crop-1_480x480.gif?v=1687886949\" data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eHere is a spectrogram of BW Vul around Sodium doublet :\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cem\u003e\u003ca href=\"https:\/\/www.shelyak.com\/wp-content\/uploads\/BW-Vul_p17-1.jpg\" rel=\"https:\/\/www.shelyak.com\/wp-content\/uploads\/bw-vul_p17-1.jpg\" data-mce-href=\"https:\/\/www.shelyak.com\/wp-content\/uploads\/BW-Vul_p17-1.jpg\" target=\"_blank\"\u003e\u003cimg decoding=\"async\" class=\"aligncenter wp-image-2579 entered lazyloaded\" title=\"https:\/\/www.shelyak.com\/wp-content\/uploads\/BW-Vul_p17-1.jpg\" src=\"https:\/\/www.shelyak.com\/wp-content\/uploads\/BW-Vul_p17-1.jpg\" alt=\"\" width=\"463\" height=\"340\" data-lazy-src=\"https:\/\/www.shelyak.com\/wp-content\/uploads\/BW-Vul_p17-1.jpg\" data-ll-status=\"loaded\" data-mce-src=\"https:\/\/www.shelyak.com\/wp-content\/uploads\/BW-Vul_p17-1.jpg\"\u003e\u003c\/a\u003e\u003c\/em\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003cem\u003e\u003cspan class=\"s1\"\u003e \u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003eApplications :\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eHigh resolution spectrograph of variable stars\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eTime series of pulsating stars (RR Lyr)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eRadial velocities\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eHigh Resolution Solar Spectrum\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eBe star tracking\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003ePlanetary nebulae\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eSpectral classification of stars\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eAsteroid classification\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eLunar geology\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003ePlanets composition\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eAbundance measure\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003enovae\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eRR Lyrae\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eHerbig Ae \/ Be\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eT Tauri\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"text-align: left;\" class=\"p1\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eWolf Rayet\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cstrong\u003e\u003cspan class=\"s1\"\u003eExternal links\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eeShel review by Christian Buil :\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/astrosurf.com\/buil\/eshel3\/review.htm\" target=\"_blank\" data-mce-href=\"http:\/\/astrosurf.com\/buil\/eshel3\/review.htm\"\u003e\u003cspan class=\"s2\"\u003ehttp:\/\/astrosurf.com\/buil\/eshel3\/review.htm\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eExoplanets measurements :\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/astrosurf.com\/buil\/extrasolar\/obs.htm\" target=\"_blank\" data-mce-href=\"http:\/\/astrosurf.com\/buil\/extrasolar\/obs.htm\"\u003e\u003cspan class=\"s2\"\u003ehttp:\/\/astrosurf.com\/buil\/extrasolar\/obs.htm\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eTau Boo measurements (\u0026amp; method) :\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/astrosurf.com\/buil\/tauboo\/exoplanet.htm\" target=\"_blank\" data-mce-href=\"http:\/\/astrosurf.com\/buil\/tauboo\/exoplanet.htm\"\u003e\u003cspan class=\"s2\"\u003ehttp:\/\/astrosurf.com\/buil\/tauboo\/exoplanet.htm\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eEpsilon Aurigae followup during eclipse :\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/astrosurf.com\/buil\/star\/epsaur\/epsaur.htm\" target=\"_blank\" data-mce-href=\"http:\/\/astrosurf.com\/buil\/star\/epsaur\/epsaur.htm\"\u003e\u003cspan class=\"s2\"\u003ehttp:\/\/astrosurf.com\/buil\/star\/epsaur\/epsaur.htm\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eSeveral stars:\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/astrosurf.com\/buil\/star\/index.htm\" target=\"_blank\" data-mce-href=\"http:\/\/astrosurf.com\/buil\/star\/index.htm\"\u003e\u003cspan class=\"s2\"\u003ehttp:\/\/astrosurf.com\/buil\/star\/index.htm\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p2\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s3\"\u003eRR Lyrae study by Christian Buil with an early eShel prototype :\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/astrosurf.com\/buil\/rrlyr\/obs.htm\" target=\"_blank\" data-mce-href=\"http:\/\/astrosurf.com\/buil\/rrlyr\/obs.htm\"\u003e\u003cspan class=\"s2\"\u003ehttp:\/\/astrosurf.com\/buil\/rrlyr\/obs.htm\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eNova KT Eri (2009) :\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/astrosurf.com\/buil\/nova_eri2009\/obs.htm\" data-mce-href=\"http:\/\/astrosurf.com\/buil\/nova_eri2009\/obs.htm\"\u003e\u003cspan class=\"s2\"\u003ehttp:\/\/astrosurf.com\/buil\/nova_eri2009\/obs.htm\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eIllustration of a typical observing night :\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.shelyak.com\/dossier.php?id_dossier=71\u0026amp;lang=2\" target=\"_blank\" data-mce-href=\"https:\/\/www.shelyak.com\/dossier.php?id_dossier=71\u0026amp;lang=2\"\u003e\u003cspan class=\"s2\"\u003ehttps:\/\/www.shelyak.com\/dossier.php?id_dossier=71\u0026amp;lang=2\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eeShel on a Meade 16″ equipment overview :\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/gabalou.canalblog.com\/archives\/2012\/09\/09\/25067889.html\" target=\"_blank\" data-mce-href=\"http:\/\/gabalou.canalblog.com\/archives\/2012\/09\/09\/25067889.html\"\u003e\u003cspan class=\"s2\"\u003ehttp:\/\/gabalou.canalblog.com\/archives\/2012\/09\/09\/25067889.html\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003eTechnical Specifications \u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eResolution \u0026gt; 10 000\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eF\/5\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eFC connector for 50µm fiber\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"p1\" style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cspan class=\"s1\"\u003eAcquisition 85mm f\/1.8 lens, back focus 40 mm max\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe fiber injection and guiding unit\u003c\/li\u003e\n\u003cli\u003eThe calibration unit\u003c\/li\u003e\n\u003cli\u003eThe Echelle spectroscope\u003c\/li\u003e\n\u003cli\u003eThe eShel software\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003eYou have to add to the set up, an optical fiber object of 50 µm, an optical fiber calibration of 200 µm, an autoguiding camera and a main camera for spectra\u003c\/p\u003e\n\u003ch3\u003e\n\u003cbr\u003e\u003cbr\u003eManual \u0026amp; Warranty\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.shelyak.com\/wp-content\/uploads\/DC0009B-eShel-User-Guide.pdf\" target=\"_blank\"\u003eUser guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.shelyak.com\/wp-content\/uploads\/DC0010C-eShel-Installation-Maintenance-Manual.pdf\" target=\"_blank\"\u003eSet up guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eISIS tutorial:\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.astrosurf.com\/buil\/isis\/eshel\/tuto1.htm\" target=\"_blank\"\u003ehttp:\/\/www.astrosurf.com\/buil\/isis\/eshel\/tuto1.htm\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eCheck latest beta version of AudeLA software which now inlcudes eShel module in standard :\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cspan class=\"s1\"\u003e\u003ca href=\"http:\/\/sourceforge.net\/projects\/audela\/files\/audela\/current-development\/\"\u003ehttp:\/\/sourceforge.net\/projects\/audela\/files\/audela\/current-development\/\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eCheck also\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.shelyak-instruments.com\/Web\/eshel\/vcredist_x86.zip\"\u003e\u003cspan class=\"s2\"\u003evcredist_x86\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eMicrosoft program that you may need to install fo AudeLA to run properly.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003eShelyak 1-Year Warranty\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Shelyak","offers":[{"title":"Default Title","offer_id":44122543849701,"sku":"SHE-PF0011","price":16730.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/shelyak-eshel-ii-spectroscope-pf0011-astronomy-plus.jpg?v=1690491495","url":"https:\/\/istronomyplus.com\/products\/shelyak-eshel-ii-spectroscope-pf0011","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}