Astronomik UHC professional deepsky filter (31.7mm)

incl. 27% VAT

100.57
Including 27% VAT:
100.57 € (35 200 HUF)
Net price (for non-EU customers):
79.19 € (27 717 HUF)
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Stock avalability
Budapest shop:
Minimal stock (2-3 pieces)
Delivery:
Delivery in 24-48 hours
Bp. shop:Minimal stock
Delivery:Delivery in 24-48 hours

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.

's opinion

Have been using it for years

Optical quality

Mechanical quality

Price/Value ratio

Astronomik UHC professional deepsky filter (31.7mm)
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).

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Mechanical quality

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Price/Value ratio

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