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Astronomik UHC professional deepsky filter (31.7mm)
incl. 27% VAT
102.72 €
Including 27% VAT:
102.72 € (41 600 HUF)Net price (for non-EU customers):
80.88 € (32 756 HUF)
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- 10 year manufacturer warranty
- 2 years consumer warranty
Product code: AsUHC
Astronomik UHC professional deepsky filter (31.7mm)
More about the product
The UHC filters are general purpose deepsky filters which blocks the light from Hg and Na lamps, but transmits all of important wavelengths, such as H-alpha, H-beta and O-III. UHC filters are available from many different manufacturers, checking the image below might help to choose the right one. As it is evident there is no such thing as UHC "standard". All of the filters transmits most of the light around H-alpha (656nm), Oxigen-III (501nm) and H-beta (485) lines.
There are wider and narrower filters. But what might be the difference between them in practice? It depends on heavily the selected targets.
A general rule is that the narrowed the transmission is the higher the contrast is, meaning that they work excellently for emission, planetary nebulae and supernova remnants. They don't work that well on objects with wider spectrum, like stellar clusters, galaxies, open- and globular clusters. To photograph these a wider transmission, light pollution reduction filters are recommended.
So: for emission and planetary nebulae, and supernova remnant use a narrowband filter, like Astronomik or Castell UHC.
bcsego's opinion
Have been using it for years
Optical quality
Mechanical quality
Price/Value ratio
Astronomik UHC professional deepsky filter (31.7mm)
Pros
Az általam próbált legjobb UHC szűrő. A legszebb Orion ködöt ezzel láttam. Városból. Panelház erkélyéről. A vasútállomásnál...
Cons
Nem \"óccó\"... de nem is kínai.
Summary
Egyszeri beruházás és örök élmény.
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The product comes with 10 years warranty (excluding the electronical parts).
The product comes with 2 years consumer warranty.
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Rating
5, based on 3 reviews
Optical quality
5, based on 1 reviews
Mechanical quality
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Price/Value ratio
5, based on 1 reviews
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