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H-Alpha telescope

camera filter telescope

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H-Alpha Telescope
Manufacturer Celestron
ED80, achromatic doublet using high-dispersion glass
D 80mm
F/D 7.5
Diameter of solar image 5.687mm
Energy rejection filter (full aperture) Baader D=90mm
Baader TZ-4 telecentric Barlow lens
Magnification 4.0
Diameter of solar image
Monochromator Solar Spectrum, Chino Hills, CA, USA, 2007
Type Fabry-Perrot, Research Grade RG38
Nominal Wavelength 656.2808nm (line width = 0.4nm)
Filter bandpass 0.05nm +/- 0.01nm
Tunable filter range +/- 0.25nm (par contrôle de température)
Nominal temperature ~53°C
Focal reducer/corrector Baader #94175, achromatic doublet (corrector)
F 220mm +/- 5mm
Magnification 0.59
Diameter of solar image 13.421
CCD camera QImaging Retiga 4000R
Detector Kodak KAI-4021, inter-line transfer
Detector size 2048x2048 pixels, pixel size = 7.5x7.5 micron
Sensitive area 15.16x15.16mm

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USET images can be freely downloaded as public data. However, any public use, web based or paper publication of those data must include an explicit credit to the source:
(USET data/image, Royal Observatory of Belgium, Brussels)