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  • Astronomik filtro UHC 31,8mm Astronomik filtro UHC 31,8mm

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Astronomik CLS CCD EOS Clip XL filter

Product code: AS8H00LD

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Quick Overview

The Astronomik CLS CCD is suitable under light-polluted skies for DSLR Cameras, which have been remodeled for astronomical use. The filter enhances the contrast between all deep-sky objects and the background.


The EOS Clip XL model plugs directly into the Canon EOS camera body (compatible with all Canon EOS Full Frame 24x36mm sensor camera, except for 5DS) so it is very practical to use.

Availability: In stock

€219.00
22% tax incl
if you pay by bank transfer €212.43

Details

The CLS-CCD Filter enhances the contrast between astronomical objects and the background. Due to the wider transmission curve compared to UHC filters, a greater amount of light will pass the filter. Stars will be less dimmed. This filter has been optimized to block as much spurious light as possible and simultaneously provide the best performance for 'useful' light. A good filter for DSLR-, CCD- and film b/w-photography as well as observation of deep-sky-objects with telescopes or photo lenses of all aperture f/3 and above.

 

Main use

The filter blocks completely emission lines of artificial light sources like streetlights (e.g. sodium- and mercury-vapor) as well as the airglow. All 'important' emission lines as well as the spectral range of the night-adapted eye are beeing passed. The supplementary IR-blocking layer allows the use for DSLR- and Webcams without an integrated IR-block filter.


 

Suitability

Visual observation (dark skies): Good, to reduce light pollution by mercury-vapour lamps (streetlight)
Visual observation (urban skies): Reasonable, an UHC-E or UHC filter is more suitable
Film photography: Very good, colour balance is near perfect
CCD photography: Very good, optimized rejection of light pollution
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): Very good, colour balance is near perfect
Webcam / Video (Planets): Unsuitable
Webcam / Video (Deep Sky): Very good, if light pollution is a big problem

 


Technical Data

95% transmission at 486nm (H-beta)
95% transmission at 496nm (OIII)
95% transmission at 501nm (OIII)
97% transmission at 656nm (H-alpha)
pass from 450 to 520nm and from 640 to 690nm
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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