Solar Spectrum Research Grade RG 46 (46mm clear aperture)

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Solar Spectrum Research Grade RG 46 (46mm clear aperture)

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€ 10,750.00 Price excl. German VAT tax (19%): € 9,033.61
Shipping time: Sometimes long waiting periods

  • 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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€ 10,750.00 Price excl. German VAT tax (19%): € 9,033.61

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Is it possible to obtain the D-ERF energy protection filter for SolarSpectrum H-alpha filters more cheaply from other sources?
Question by: Johannes H. on Apr 10, 2024 10:37:00 AM | 1 Answer(s)

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Can I use an UV/IR-Cut filter or the BBHS mirror in front of an H-Alpha or Calcium Solar Filter? Do you recommend the 2" BBHS or 2" Clicklock Mirror for solar observation?
Question by: Enrique V. on Sep 26, 2016 3:04:00 PM | 1 Answer(s)

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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:

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