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Filters > Nebulae filters > Broadband Filters > Astronomik > CLS > Astronomik Filters CLS M67
Product no.: 66935

Filters CLS M67

$ 421.00 incl. VAT, plus shipping costs
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Product description

Astronomik CLS Filter

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.

We have re-desgined all of our photographic filters. Since the end of 2008 we are shipping our new "Halo-Free" filters.

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.

In contrast to purely visual filters, photographic CCD filters have built-in IR-blocking, which prevents the optical problems caused by infrared radiation.

Specifications

Capacity


Frame
M67
Mount material
Aluminium
Coating of optical system
multiple
filter thickness (mm)
1

General


Type
Filters
Type of build
Broadband Filters
Series
CLS

Area of application


Useful for photographs
yes
Visually useful
yes
Nebulae & galaxies
yes
Anti light-pollution
yes
Astronomik Filters CLS M67
Light transmission curve

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