Baader H-alpha 35nm CCD Filter

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Baader H-alpha 35nm CCD Filter

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€ 74.00 Price excl. German VAT tax (19%): € 62.18

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  • Premium grade H-alpha interline chip CCD-filter for fast optical systems f/10 to f/2.8
  • IR-blocked
  • NO halos, NO reflections, NO ghosting
  • non-ageing sealed coating edges

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€ 74.00 Price excl. German VAT tax (19%): € 62.18

Product Questions

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What's the actual size of your 2" filters in "mm" with and without frame/ring? What step down adapter is suggested from a 52 mm to "-- mm"?
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Question by: Waqas Ahmad on Oct 10, 2016 7:54:00 PM | 1 Answer(s)
What are the threads and pitch of your 1.25" and 2" filters?
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Question by: Anders G. on Sep 20, 2017 12:55:00 PM | 1 Answer(s)
Does the filter block IR radiation right down to 2400nm. Solar radiation extends that far. KG3 heat absorbing glasses protect down to 2400nm. On your UV IR blocking filter you say it is better than KG3 so that implies that goes down to 2400nm.
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Question by: Andrew Huskinson on Nov 9, 2017 2:22:00 PM | 1 Answer(s)
I have bougth an used filter #2458380, but on the body filter, in the original Baader label, is written "H-Alpha 45nm Passfilter 2" wIR-cut.
Since in your catalog the #2458380 is 35nm filter, my question is: there where an old version with same P/N but different band?
Thanks a lot in advance for your help.
best regards
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Question by: massimo nardoni on Oct 13, 2016 5:19:00 PM | 1 Answer(s)
Hi, Astrograph use these filters as internal ERFs in solar telescopes, tested in refractors up to 152mm. I have been using a 1.25" version in a Vixen 110mm VMC with no issues. I am considering using a 2" in a 180mm Mak. Is there a specification for the watts per square cm on the filter and a specification for the maximum working temperature? I calculate there would be 26W incident on the filter spread across it, with 1.3W transmitted. Andrew.
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Question by: Andrew Huskinson on May 18, 2019 12:11:00 PM | 1 Answer(s)
Hi, can I use this H-alpha 35nm filter with your solar film to get images of the chromosphere, prominences, filaments etc on the Sun? I would be imaging with a dslr. Thanks.
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Question by: Simon Johnson on May 6, 2019 5:13:00 PM | 1 Answer(s)
What is the thickness of the 1.25" H-alpha filter cell including the depth of the thread? Thank you.
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Question by: Tim Haymes on Mar 19, 2017 11:14:00 PM | 1 Answer(s)
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