Astronomik Pro 807 IR Pass Filter

IR Pass filter designed for scopes of 8" Aperture or over.

The seeing can be calmer in longer wavelengths and some benefit can be gain by imaging in the IR or NIR.

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Astronomik LRGB Type IIc Filters

The Astronomik Type II filters have an integral IR-Blocking coating, thereby removing the need to have a separate permanently-mounted filter.

The standard set comprises R,G,B and a standard IR-Blocker. For full-spectrum imaging you can use a True Technology clear glass filter (no IR-Block) or an IR-Transmission filter, as this part of the spectrum is not blocked as would be the case with a permanently mounted IR-Blocker.

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Astronomik 12nm Ha Filter

The Astronomik H-Alpha-CCD filter is the latest filter in the programme. It is designed for CCD observation of gas nebulas and planetary nebulas. Due to the narrow band pass of the H-Alpha line at 656nm, the filter will give maximum increase in contrast even under the best observing conditions. Faint supernova remnants and planetary nebulae the Astronomik H-Alpha filter often makes the difference between the object being detected or not at all. The filter blocks all unwanted light, especially Hg and Na emissions from streetlights, and also the IR-region where CCDs are often most senstive.

The best focal ratios for this filter are f/3.5 to f/6. The field of application is from f/2.8 to f/15. Transmission loss that other filters with smaller bandpasses can suffer, only occurs with the Astronomik filters at extreme light intensive focal ratios of f/2 and faster. Thus you can image extended objects across the whole field of view and not only in the middle. This advantage permits the use of off-axis auto-guiding chips such as that of SBIG cameras, which would receive very little light using filters from some other manufacturers. The bandwith of 13nm allows us to achieve a transmission as high as 97%. -A value that is impossible to reach with filters having a smaller bandwith.

Due to the high optical quality of the glass substrate you will still obtain needle-sharp star images using this Astronomik H-Alpha filter.

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Astronomik SII CCD Filter

The Astronomik SII-CCD filter, is designed for CCD imaging of gas and planetary nebulae. Due to the narrow bandpass of the OII line at 501 nm, the filter provides maximal increase in contrast even under poor observing conditions. The 13 nm bandwidth allows us to achieve transmission as high as 97%--a value that is impossible to reach with filters of narrower bandwidth.

With faint supernova remnants and planetary nebulae, the Astronomik SII-CCD filter often makes the difference between detecting the object or not. The filter blocks all unwanted light, especially the Mercury (Hg) and Sodium (Na) emissions from streetlights and the IR region where CCDs are often most sensitive.

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Astrononomik OIII CCD Filter

The Astronomik OIII-CCD filter, is designed for CCD imaging of gas and planetary nebulae. Due to the narrow bandpass of the OII line at 501 nm, the filter provides maximal increase in contrast even under poor observing conditions. The 13 nm bandwidth allows us to achieve transmission as high as 97%--a value that is impossible to reach with filters of narrower bandwidth.

With faint supernova remnants and planetary nebulae, the Astronomik OIII-CCD filter often makes the difference between detecting the object or not. The filter blocks all unwanted light, especially the Mercury (Hg) and Sodium (Na) emissions from streetlights and the IR region where CCDs are often most sensitive.

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Astronomik H-Beta CCD Filter

The Astronomik H-ß CCD filter is designed for CCD Imaging of gas nebulas with larger scopes. Due to the extreme small band pass of the H-ß line, the filter will produce a maximum increase of contrast even under best observing conditions. At faint H-II nebulas the Astronomik like the horsehead nebula the H-ß filter often makes the gain, that decides if the object can be seen or not. With the Astronomik H-ß you will be able to see the horsehead nebula with scopes of 10"...12" aperture under good skies.

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Astronomik Filter Clip Series

The filter Clip series of filters are tailor made for Canon EOS DSLR and Astronimical Imaging.

Large filters for large camera lens objectives are very expensive If you place a filter holder between your camera body and lens you loose the ability to focus to infinity For very fast (low f/ number) telescopes like the Vixen R200SS or the Takahashi “Epsilon” astrograph. a filter drawer or a filter wheel cannot be used since the distance to the corrector lenses would be changed.

With long exposure times your camera’s sensor chip is exposed to more dust

With the Astronomik EOS Filter Clip System you can immediately take care of all of these problems!

The patented Astronomik EOS Filter Clip System is black anodized aluminum and laser-cut on state-of-the-art modern machines. It can be inserted within seconds directly into the EOS camera body. There are no changes necessary and all lens functions (focus, screen, image stabilization) remain functional!

Almost all Canon system lenses (with the exception of the EF-S series) and all M42 and T2 lens adapters, can be used with the Astronomik EOS Filter Clip System. The EOS Filter Clip System also acts as an outstanding dust shield, which prevents the possibility of dust settling on the sensor during long time exposure (The MC-Clear filter does not have a filter effect and only acts as a dust shield.)

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Astronomik CLS Light Pollution Filter (Not IR Blocked)

The Astronomik CLS filter is a broadband light pollution filter for both visual and imaging applications.

Due to the design of the transmission curve the filter reduces the sky background and emission nebulae,planetary nebulae as well as open clusters, globular clusters and galaxies are all much improved visually as well as with a CCD camera.

The Astronomik CLS blocks the emission of Hg and Na streetlights as well as all Skyglow-lines

All major emission lines from deep-sky objects are passed without surpression.

Loss of transmission and colour displacements, that are prevalent in other light pollution filters, occur with the CLS filter only at extreme fast focal ratios of F2 or faster.

£69.99 inc. VAT and delivery

Technical specs:

High transmission of nearly 100% between 450nm and 530nm
transmission of 96% at H-alpha
total blocking of all unwanted light from light-pollution
the ideal all round filter for deep-sky observing, even with small scopes
completly resistant against high humidity and scratches
highest optical quality on the market

Astronomik CLS CCD Filter (IR Blocked)

The Astronomik CLS filter is a broadband light pollution filter for both visual and imaging applications.

Due to the design of the transmission curve the filter reduces the sky background and emission nebulae,planetary nebulae as well as open clusters, globular clusters and galaxies are all much improved visually as well as with a CCD camera.

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Skywatcher Variable Polarising Filter

These high quality anodized aluminium, optical glass variable polarising filters reduce the amount of light entering your eyepiece. You can progressively dim the view when observing a bright object, such as the Moon or certain planets, to a level according to your needs, whilst increasing contrast, reducing glare and increasing the amount of detail that can be studied. The light transmission can be varied from 40% down to as little as 1%. The filter will not change the colour of the object being viewed and will prevent eye fatigue and loss of night vision. Each filter set consists of two polarizing filters, one which can be rotated in its cell to adjust the brightness. The filters, used as single elements, can also be used for daytime terrestrial use for reducing sunlight glare from lakes oceans or window glass. Available in two sizes, threaded to fit either standard 1.25” or 2” astronomical eyepieces. Supplied with storage case.

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