Baader Ultra Narrowband O-III CCD-Filter (4,5nm)

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Baader Ultra Narrowband O-III CCD-Filter (4,5nm)

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€ 238.00 Price excl. German VAT tax (19%): € 200.00

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  • Premium grade O-III CCD-filter for fast optical systems f/8 to f/3
  • IR-blocked
  • NO halos, NO reflections, NO ghosting
  • non-ageing sealed coating edges

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€ 238.00 Price excl. German VAT tax (19%): € 200.00

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"?
63
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?
25
Question by: Anders G. on Sep 20, 2017 12:55:00 PM | 1 Answer(s)
A few days ago I acquired an OIII filter 4.5 nm 31mm and after trying it the halos it generates are horrible.
Why does this happen if the specifications ensure that they do NOT produce halos?
1
Question by: Jesus Magdalena on Aug 9, 2019 12:22:00 PM | 1 Answer(s)
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