H-alpha Accessories
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From: € 275.00 Price excl. German VAT tax (19%): € 231.09
- D-ERF (Dielectric Energy Reflection Filter) in different sizes
- Pre-filter to reduce heat during H-alpha observation with SolarSpectrum Filters
- Plane parrallel plate (without filter cell) with IR-Cut dielectric coating
- non-ageing sealed coating edges
- Half-Band-Width (HBW): 80 mm – see also graph
- Filter WITHOUT cell – 3D-printed filter cells - customized for your telescope, can be ordered in addition (not available as standalone product)
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From: € 250.00 Price excl. German VAT tax (19%): € 210.08
- Filter Frame for D-ERF Filter, Diameter 75 - 180 mm
- No serial production - every filter frame will be adapted to your needs and professionally produced on our in-house 3D-printer (70-160 mm) or are CNC machined Aluminium (180 mm)
- Filter frame offers complete safe and firm hold for the delicate D-ERF energy reflection filters
- Only available in combination with Solar Spectrum H-alpha Filters and D-ERF Filters Learn More
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# 2459300
€ 325.00 Price excl. German VAT tax (19%): € 273.11- Steplessly variable, white anodized and heat reflecting diaphragm from 13- to 113 Millimeter for our D-ERF Filters
- For optimum adjustment of a telescope aperture when observing with an H-alpha filter of Solar Spectrum (also suitable for other brands)
- The diaphragm has four telescope-sided M3-threads on a pitch circle radius of 60 mm to fasten also on a DIY-holder.
- Please note: in addition to the price of the diaphragm there might be additional modification costs of EUR 50.- if we adapt the diaphragm to a self-manufactured D-ERF-filter holder (Our filter holders are available ONLY IN ADDITION to a Solar Spectrum H-alpha filter).
- Other applications: The iris may of course be used to selectively dimming of a refractor objective, eg to hide the edge residual error of inexpensive lenses. Learn More
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# 2459258
€ 375.00 Price excl. German VAT tax (19%): € 315.13- Telescopic connection for Baader FFC and telecentric systems
- Consisting of 9 components: 1x Four-In-One (T-2 version) adapter M68/T-2/M68 (T-2 male Inverter #26 included ) # 245 8225; 1x T-2 / Extension Tube 40mm # 150 8153 (T-2 #25B); 1x M68 Extension tube 80mm # 245 8208; 2x M68 Extension tube 40mm # 245 8204; 2x M68 Extension tube 10mm # 245 8201; 1x M68/2"/M68Ultra short clamp 2" focus-side M68, telescope-side M68 (Zeiss) and M60 (Vixen) # 245 8196 (T-2 #32); 1x 2"/T-2 Nose Piece and Camera adapter # 240 8150 (T-2 #16)
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# 2459260
€ 325.00 Price excl. German VAT tax (19%): € 273.11- Alike the TZ-3 telecentric, also the RG 0.4x Telecompressor features 46mm clear aperture throughout, perfectly suitable even for large SolarSpectrum RG46 Research Grade H-alpha Filters
- Working distance: 74mm (Distance to the camera sensor), optimized for videography and full solar disc imaging. Ø 16 mm corrected image field in conjunction with the TZ-3
- mounts straight onto the body of the SolarSpectrum filter and reduces f/30 f/ratio back to f/10, thanks to the factor of 0.4
- 2" male threads on both sides, fitting the SolarSpectrum Universal Flange Adapter #2958240 (included as standard on both sides of the SolarSpectrum H-alpha filters)
- The RG 0.4x Telecompressor serves to adjust the focal length in order to improve poor seeing conditions and / or to enlarge the field of view for photographic- or lucky imaging applications
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# 2459255
€ 345.00 Price excl. German VAT tax (19%): € 289.92- Telecentric with 2" outer diameter and T-2 threads on both sides
- Aplanatic, with 2x focal length extension to achieve a parallel f/30 beam in conjunction with ~f/15 optics systems – free of field curvtare
- Primarily calculated and produced for H-alpha at 656,3 nm, delivering 99% Strehl (99% definition brightness )
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# 2459257
€ 395.00 Price excl. German VAT tax (19%): € 331.93- Research Grade Telecentric Unit, featuring an oversized pick up expanding lens set and 2" (50.8mm) threads on both sides – T-2 Adapter and 2" m/f inverter ring are both included as standard accessories
- 46mm clear aperture at the H-alpha-filter entrance side - suitable for research grade SolarSpectrum H-alpha filters
- Large working distance of 250mm for optimized focal length reduction with a telecompressor and suitable room for adapting a binocular viewer
- Aplanatic, with 3x focal length extension to achieve a parallel f/30 beam in conjunction with ~f/10 optics systems – free of field curvtare
- Primarily calculated and produced for H-alpha at 656,3 nm, delivering 99% Strehl (99% definition brightness )
- Diffraction limited design also at 396 nm (CaK)
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# 2459256
€ 345.00 Price excl. German VAT tax (19%): € 289.92- Telecentric with 2" outer diameter and T-2 threads on both sides
- Aplanatic, with 4x focal length extension to achieve a parallel f/30 beam in conjunction with ~f/7,5 optics systems – free of field curvtare
- Primarily calculated and produced for H-alpha at 656,3 nm, delivering 99% Strehl (99% definition brightness )
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# 2459259
€ 275.00 Price excl. German VAT tax (19%): € 231.09- gets mounted eyepiece-sided directly onto the SolarSpectrum filter and reduces the previously by the telecentric system extended focal length again by a factor of 0.7
- Working distance: 110mm (Distance to the camera sensor)
- 2" male threads on both sides, fitting Universal Flange Adapter #2958240 (included with SolarSpectrum H-alpha filters
- Telecompressor is used to adjust the focal length to possibly poor seeing conditions and / or enlarging the field for photographic- or webcam applications
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# 2959279
€ 34.00 Price excl. German VAT tax (19%): € 28.57- A Solar Shade made from Aluminium to clamp between any T-2 connection
- T-2 drilling (ø 42 mm)
- Use as shade (glare protection) for visual observation / imaging through eyepiece or camera
- Used to shade the eyepiece or camera viewing opening from direct solar radiation during photographic- or visual solar observation in the H-alpha region with narrowband filters from SolarSpectrum
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# 2959280
€ 35.00 Price excl. German VAT tax (19%): € 29.41- A Solar Shade made from Aluminium to clamp between any 2" connection
- Drilling for 2", (ø 50,8 mm)
- Use as shade (glare protection) for visual observation / imaging through eyepiece or camera
- Used to shade the eyepiece or camera viewing opening from direct solar radiation during photographic- or visual solar observation in the H-alpha region with narrowband filters from SolarSpectrum
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# 2959281
€ 36.00 Price excl. German VAT tax (19%): € 30.25- A Solar Shade made from Aluminium to clamp between any M68 connection
- Drilling for M68 threads
- Use as shade (glare protection) for visual observation / imaging through eyepiece or camera
- Used to shade the eyepiece or camera viewing opening from direct solar radiation during photographic- or visual solar observation in the H-alpha region with narrowband filters from SolarSpectrum