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

More Views

Abbildung ähnlich Application Image: Solar Spectrum H-alpha Filter with TZ-3, Telecompendium, D-ERF and additional optional accessories Example of a SolarSpectrum cooling fan (included for all models) Application image: © W. Paech – for more images please visit our image gallery on www.astrosolar.com Application image: © W. Paech – for more images please visit our image gallery on www.astrosolar.com Application image: © B. Koch – for more images please visit our image gallery on www.astrosolar.com Application image: © W. Paech, F. Hofmann – for more images please visit our image gallery on www.astrosolar.com Application image: © K. v. Schauroth – for more images please visit our image gallery on www.astrosolar.com Case and accessories included Application image: D-ERF Filter in different size. Required for SolarSpectrum H-alpha Filters Example of included items for a SolarSpectrum Filter (shown #2459219: SolarSpectrum Solar Observer 1.5 - 0.50 Å) Application image: D-ERF Filter with 3D-printed filter holder and steplessly variable diaphragm Application image: Solar Spectrum H-alpha Filter with telecentric system and Skyris Videomodule Application image: telescope combination in whitelight and H-alpha on Mercury Transit 2016 Application image: Solar Spectrum H-alpha Filter on Zeiss telescope at partial solar eclipse 2016 Application image: Solar Spectrum H-alpha Filter on Zeiss telescope at partial solar eclipse 2016 Application image: Solar Spectrum H-alpha Filter with mirror diagonal and Hyperion eyepiece Application image: Solar Spectrum H-alpha Filter on Refractor Anwendung

Application Images

$Application image: Solar Spectrum H-alpha Filter on Refractor$

Images uploaded by Customers

No customer Image uploads yet. Add Your Review with Images

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

Please choose product variant from dropdown below to see SKU number

€ 10,100.00 Price excl. German VAT tax (19%): € 8,487.39

Shipping time: Sometimes long waiting periods

Be the first to review this product

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). 5 years warranty if handled properly

Important note: 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

*Version

* Required Fields

€ 10,100.00 Price excl. German VAT tax (19%): € 8,487.39

Product Questions

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?

-16

Question by: Enrique V. on Sep 26, 2016 3:04:00 PM | 1 Answer(s)

If you want to observe the sun in H-Alpha, we recommend the standard dielectrical Clicklock mirror (# 2956100) in combination with a suitable filter combination, because the dielectrical filter reflects less radiation below 380nm and above 740nm. This way, the mirror can reduce the strain on the following filters at least a little bit.Please do also use an energy rejection filter in front of the telescope to reduce the strain on the filters as much as possible.

We highly advise against visual calcium observations of the sun - the 397nm of Calcium are already ultraviolet radiation, and UV-radiation can cause phototoxic reactions which can harm your eyes. In addition, even young people can't see these wavelengths very good, and sensitivity decreases with the age. Because of this, the eye doesn't feel if the intensity is much too high. If you now try to increase the amount of radiation (e.g. with another mirror) to achieve a brighter image, you will increase the risk for eye damage. According to the newest norms for eye safety and to ophtalmologist conclusions, the sun must not be observed visualy at 397nm.

We highly advise to only observe the sun in calcium photographically, then you also do not need a star diagonal. We can't understand why some manufacturers promote these calcium-filters for visual observations.

We also advise against placing a filter so close to the focus - any energy rejection filter belongs in front of the front lens, even if this sets high demands to the quality of such a large filter. Placing the filter close to the focus will save money, because you can use a much smaller filter, be we absolutely can't recommend it - because of our own conscience as well as because of EU-regulations. The filter would receive all the energy collected by the front lens. We can only recommend putting the energy rejection in front of the front lens, which is the ethically and technically correct method.

Answer by: Baader Web Team (Admin) on Oct 14, 2016 9:32:00 AM

-2

You must be logged in to answer questions.

Related Articles

An experience report on the new Baader Telecentric System TZ-3 and the Research Grade (RG) Telecompressor (TC) 0.4

An experience and observation report on the new Baader Telecentric System TZ-3 and the Research Grade (RG) Telecompressor (TC) 0.4 for solar observation in the H-alpha light with SolarSpectrum filters download the complete review (pdf) Introduction Successful H-alpha-observations of the sun with narrow-band line filters from the manufacturers “SolarSpectrum” and / or "DayStar" require an almost parallel beam of light with a focal ratio of approx. f/30 directly in front of the filter, otherwise the filter will not work properly. This is not so easy with today's fast optical systems, which work around f/7. Such an opening ratio can be achieved either by masking (reducing) the front lens opening or by parallizing the optical beam with a "telecentric system" (TZ). * TZ: See also the supplement at the end of the report. My "solar telescope" is an AstroPhysics refractor with an aperture of 155mm and a focal length of 1.085mm, the aperture ratio in the prime focus is f/7. In order to use the filter without extending the focal length, the telescope's aperture would have to be reduced to approx. 35mm in order to realize the optimum f/30 focal ratio. It is clear that this is highly unsatisfactory – the resolution detail...
read article

Specifications