Solar Spectrum Observer Series 1,5 (25mm clear aperture)

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Solar Spectrum Observer Series 1,5 (25mm clear aperture)

Please choose product variant below to see price and SKU number

€ 4,050.00 Price excl. German VAT tax (19%): € 3,403.36
Shipping time: Sometimes long waiting periods

  • 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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€ 4,050.00 Price excl. German VAT tax (19%): € 3,403.36

Product Questions and Answers

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I am currently using an 8" SCT telescope with a few Baader filters to image the sun's surface but after much reading
I am now considering purchasing a dedicated solar telescope to expand my viewing.
However, having found an article that led me to your page, I would like to know whether such filter
(Solar Spectrum Observer Series 1,5 or similar model) would work with my SCT.
I already have your OD 3.8 film which I use when imaging (not viewing).

Question by: Philippe Fossier on Jun 1, 2023 10:27:00 PM | 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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