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Astronomik CLS EOS XL Clip In Filter

Price:  £119.00 (Inc. 20% VAT)Earn 119 Loyalty Points

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Generally In Stock, Please Confirm Before Ordering  

Generally In Stock, Please Confirm Before Ordering

Model:  8h00lc
Brand:  Astronomik

Astronomik CLS EOS XL Clip In Filter
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The Astronomik CLS is a budget filter for visual observation, Black & White photography and CCD photographs of nebulae, galaxies and star clusters with astronomical instruments of any size.

The Astronomik CLS blocks the light of the spectral lines of mercury and sodium-vapor lamps and lets the largest part of the visible light and H-alpha emissions pass. All the important emission lines, as well as the spectral region that the very well dark adapted eye can see, can pass through the filter.


Main use
The filters are optimized for use with aperture ratios from 1:3 to 1:15. Transmission losses and chromatic distortions, which are problems with other filters, only appear with Astronomik filters when extremely bright aperture ratios of 1:2 and more are used. The CLS filter is suitable for use with telescopes of all aperture sizes.
 

Suitability
Visual observation (dark skies): Good, to reduce light pollution by mercury-vapour lamps (streetlight)
Visual observation (urban skies): Good, an UHC-E or UHC filter is more suitable
Film photography: Very good, colour balance is near perfect
CCD photography: Good, when used with an additional IR-block-filter
DSLR photography (original): Good, colour balance shifted but contrast enhanced
DSLR photography (astro modified): Very good, colour balance is near perfect
DSLR photography (MC modified): Good, when used with an additional IR-block-filter
Webcam / Video (Planets): Unsuitable
Webcam / Video (Deep Sky): Very good, if light pollution is a big problem

Technical Data
92% transmission at 486nm (H-beta)
92% transmission at 496nm (OIII)
92% transmission at 501nm (OIII)
97% transmission at 656nm (H alpha)
pass from 450 to 540nm and beyond 650nm
Parfocal with other Astronomik filters
Glass thickness: 1mm
Completely resistant against high humidity, scratches and aging effects
Diffraction limited, the filter will not reduce the optical performance of your telescope!
Astronomik filters are delivered in a high-quality, long lasting, filter box
Since 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past

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Some items that are showing as in stock are in stock at our holding warehouses, not at the shop. To double check the stock levels at the shop, please contact us on 01909774369 or sales@rothervalleyoptics.co.uk.

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Rother Valley Optics

01909774369
sales@rothervalleyoptics.co.uk

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- - - Rother Valley Optics Ltd

01909 774 369
sales@rothervalleyoptics.co.uk