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Solar Spectrum Research Grade RG32 (32mm clear aperture)

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€7,210.00

Price excl. German VAT tax (19%): € 6,058.82

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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

Important note:

Please note our information on the availability of 3D-printed or CNC-turned cell mounts for front side D-ERF filters as custom-made products.

First Class H-alpha Solar Filters by SolarSpectrum

A SolarSpectrum filter transforms almost any telescope into a high-end H-α telescope with appropriate accessories. The filter design is optimized for observatories and amateurs who want to use the full aperture and resolution of large telescopes for solar observation and plan more than just an occasional view at H-alpha.

The filters have no central obstruction and are actively heated. This means that the filter does not need to be readjusted during the course of the day - ideal for long-term observations, time-lapse photography or public relations work.

Further information can be found on our detailed Blogpost:

First class H-alpha Solar Filters by SolarSpectrum

Temperature controlled H-alpha-filters (lambda = 656,3 nm) with electronic temperature control (combined heating and cooling!)