BESOS: a prism spectrograph
BESOS: a prism spectrograph
BESOS: a prism spectrograph
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10/23/12 <strong>BESOS</strong>: a <strong>prism</strong> <strong>spectrograph</strong> |<br />
Two LINOS (now Qioptiq) doublets were chosen as collimator and objective respectively. An equilateral 60º <strong>prism</strong> from<br />
Edmund Optics was used as disperser. The image quality at 400, 550 and 700 nm is illustrated in the following Figure.<br />
The square is 20 μm side. The images for these 3 wavelengths were optimized to have their minimum spot<br />
size perpendicular to the dispersion.<br />
Technical data<br />
spectroscopy.wordpress.com/2011/04/10/besos-a-<strong>prism</strong>-<strong>spectrograph</strong>/<br />
Besos. Spot diagram<br />
Instrument Prism <strong>spectrograph</strong><br />
Name <strong>BESOS</strong> (BEst Simple Optical Spectrograph)<br />
Description Low resolution <strong>spectrograph</strong> based on an equilateral <strong>prism</strong><br />
Slit Ni plate Ø 10 mm, 25 µm thick, centered slit:25 µm width, 2 mm<br />
long. Labelcomat (B)<br />
Collimator Doublet f = 30 mm, Ø 12.5 mm, external mount. Ø 25 mm. Linos<br />
ref. G052008000. Glass: SF18. Coated: ARB2 VIS<br />
Prism Dispersion <strong>prism</strong>. Material SF18, 15x15mm. AR coating. Edmund<br />
Scientific Ref U43-494<br />
Objective Doublet f = 40 mm, Ø 12.5 mm, external mount. Ø 25 mm. Linos<br />
Telescope interface Standard 1.25” tube.<br />
Camera interfaces T2 thread<br />
ref. G052010000. Glass: SF18. Coated: ARB2 VIS<br />
Eye piece. f = 20 mm, standard barrel Ø 1.25”, with extender15 mm, Ø 1.25”<br />
Slit illumination Red LED, 10 mA.<br />
(included). For direct spectrum or slit observation<br />
Power supply Battery 12 V Model MN21/A23/K23A/LRV08<br />
Slit viewer lens Doublet f = 30 mm, Ø 12.5 mm, external mount Ø 25 mm. Linos<br />
2/7
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