Solar Spectrum
Solar Spectrum: Professional H-alpha solar filters
Experience the sun in impressive detail and exceptional sharpness
For observing in H-alpha light, Baader Planetarium offers SolarSpectrum Optical Filters in the range of 0.3 to 0.8 Angstrom FHWM. These are temperature controlled H-alpha-filters (lambda = 656,3 nm) with electronic temperature control (combined heating and cooling!)
The american company Solar Spectrum Optical Filters has been producing ultra narrow optical filters for observing the sun, ranging from the professional to the amateur alike. The popular Solar Spectrum H-alpha filters are only one of the many wavelengths Solar Spectrum Optical Filters provide.
Solar Spectrum H-Alpha Filters give you an incomparable view of our Sun's eruptive surface. The SolarSpectrum filters follow the classical design and are placed behind the telescope in the focuser. In combination with a telecentric system tuned to the focal length of the telescopic, between 2/3s of the aperture and the full aperture of the telescope can be used with most refractors and SC telescopes, depending on the telescope's f/ratio!
Other narrow-band H-alpha filters are placed in front of the telescope lens. They are avaiable at affordable prices only up to 90mm diameter. For larger telescopes, the aperture of the telescope is stopped down by the filter. This reduces both light gathering power and resolution of the telescope dramatically!
Further information about the First class H-alpha Solar Fitlers by Solar Spectrum can be found here
You can read more about H-alpha observing and photography on our website www.astrosolar.com:
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# 1363018
€ 7,350.00 Price excl. German VAT tax (19%): € 6,176.47- Research Grade Filter RG 18: 18mm clear aperture, selected quality with extremely uniform H-alpha image over the entire image field
- Halfbandwidth 0.30 + 0.10/- 0.05 Angström
- Focal ratio: f40 +10/-5
- incl. Pre-mounted Adapterset: (2x 2" Universal flange - suitable for Solar Spectrum Filter (#2958240 , € 39,-) , 1x Baader Expansion Ring 2"a/T-2i with 1mm optical path length (T-2 part #28) (#2958242 , € 25,-) , 1x Baader Adapter 2" (male) / T-2 (male) (#1508035 , € 41,-) , 2 pc. T-2 Dust caps ( Baader Male T-2 Dustcap, outer thread M42 x 0,75 (#2904000 , € € 6.50) , Baader Female T-2 Dustcap, inner thread M42 x 0,75 (#2904010 , € € 6.50) )
- Heated H-alpha – Filter (lambda = 656,3 nm) with electronical temperature control (heating and cooling combined).
- Requires an additional Energy Rejection Filter (D-ERF) in front of the lens. SolarSpectrum Filter are not available by shopping cart system and have sometimes long waiting periods. If you are interested, please contact us by email or contact form
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From: € 4,050.00 Price excl. German VAT tax (19%): € 3,403.36- Solar Observer Filter Serie 1,5: Standard-Filter with a clear aperture of 25mm. Shows the full sun disc up to effective focal lengths of approx. 2200mm
- Different Halfbandwidths available – please choose "Version"
- incl. Pre-mounted Adapterset: 2x 2" SolarSpectrum Universal Flange #2958240, 1x 2"a to T-2i Reducer #2958242, 1x 2"a to T-2a Adapter #1508035, 2 pc. T-2 Dust caps (#2904000, #2904010)
- Heated H-alpha – Filter (lambda = 656,3 nm) with electronical temperature control (heating and cooling combined).
- Requires an additional Energy Rejection Filter (D-ERF) in front of the lens. SolarSpectrum Filter are not available by shopping cart system and have sometimes long waiting periods. If you are interested, please contact us by email or contact form
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From: € 5,780.00 Price excl. German VAT tax (19%): € 4,857.14- Advanced Solar Observer Filter: Standard-Filter with a clear aperture of 32mm. Shows the full sun disc up to effective focal lengths of approx. 2700mm
- Different Halfbandwidths available – please choose "Version"
- incl. Pre-mounted Adapterset: 2x 2" SolarSpectrum Universal Flange #2958240, 1x 2"a to T-2i Reducer #2958242, 1x 2"a to T-2a Adapter #1508035, 2 pc. T-2 Dust caps (#2904000, #2904010)
- Heated H-alpha – Filter (lambda = 656,3 nm) with electronical temperature control (heating and cooling combined).
- Requires an additional Energy Rejection Filter (D-ERF) in front of the lens. SolarSpectrum Filter are not available by shopping cart system and have sometimes long waiting periods. If you are interested, please contact us by email or contact form
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From: € 10,750.00 Price excl. German VAT tax (19%): € 9,033.61- Research Grade Filter RG 46: 46mm clear aperture, selected quality with extremely uniform H-alpha image over the entire image field
- Different Halfbandwidths available – please choose "Version"
- incl. Pre-mounted Adapterset: 2x 2" SolarSpectrum Universal Flange #2958240, 1x 2"a to T-2i Reducer #2958242, 1x 2"a to T-2a Adapter #1508035, 2 pc. T-2 Dust caps (#2904000, #2904010)
- Heated H-alpha – Filter (lambda = 656,3 nm) with electronical temperature control (heating and cooling combined).
- Requires an additional Energy Rejection Filter (D-ERF) in front of the lens. SolarSpectrum Filters are not available by shopping cart system and have sometimes long waiting periods. If you are interested, please contact us by email or contact form
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From: € 7,210.00 Price excl. German VAT tax (19%): € 6,058.82- Research Grade Filter RG 32: 32mm clear aperture, selected quality with extremely uniform H-alpha image over the entire image field
- Different Halfbandwidths available – please choose "Version"
- incl. Pre-mounted Adapterset: 2x 2" SolarSpectrum Universal Flange #2958240, 1x 2"a to T-2i Reducer #2958242, 1x 2"a to T-2a Adapter #1508035, 2 pc. T-2 Dust caps (#2904000, #2904010)
- Heated H-alpha – Filter (lambda = 656,3 nm) with electronical temperature control (heating and cooling combined).
- Requires an additional Energy Rejection Filter (D-ERF) in front of the lens. SolarSpectrum Filter are not available by shopping cart system and have sometimes long waiting periods. If you are interested, please contact us by email or contact form
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