Astronomik UHC professional deepsky filter (31.7mm)
incl. 27% VAT
Including 27% VAT:
102.72 € (41 600 HUF)Net price (for non-EU customers):
80.88 € (32 756 HUF)Stock avalability
Delivery:
Available for deliveryBudapest shop:
Minimal stock- 10 year manufacturer warranty
- 2 years consumer warranty
Product code: AsUHC
Astronomik UHC professional deepsky filter (31.7mm)
You will enjoy using your Astronomik UHC filter because you will see
more stars and more details in deep-sky-objects compared to using
filters from all other manufacturers.
The Astronomik UHC (Ultra
High Contrast) filter allows the transmission of nearly 100% of the
radiation from both O-III and the H beta lines. Though the second window
for the H-alpha-line is not intended for visual observing, it is
important, if the filter is used with an electronic device. All
annoying, scattered light from other wavelength sources, including local
artificial light pollution, is reliably filtered out. With this strong
blocking of the sky background an unexpected wealth of detail becomes
visible for gas nebulae and planetary nebulae.
Main use
Astronomik UHC filters’ astounding high light transmission brings better views of deep-sky-objects even to small telescopes! The high transmission of our optical glass filters means that enough light is available to allow successful visual observations with telescopes beginning at 2" (50mm) aperture. Our Astronomik filters are optimized for use with telescope focal length f / ratios of f/4 to f/15. Transmission losses and chromatic distortions, which arise with other filters, only occur with Astronomik filters when extremely bright aperture ratios of 1:2 and more come into play. Another major advantage of our Astronomik UHC filter is the high optical quality of the filter glass. When using Astronomik UHC filters you will quickly notice the same needle-sharp stars which you are familiar with from your astronomical instrument without any filter!
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).
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Stock avalability
Delivery:
Available for deliveryBudapest shop:
Limited stock (1 piece). Please contact our colleagues before ordering: +36-1-202-5651
Stock avalability
Delivery:
Available for deliveryBudapest shop:
Limited stock (1 piece). Please contact our colleagues before ordering: +36-1-202-5651
Stock avalability
Delivery:
Available for deliveryBudapest shop:
Limited stock (1 piece). Please contact our colleagues before ordering: +36-1-202-5651New Products

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