Astronomik CLS Light Pollution Filter - Canon EOS APS Clip

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Astronomik CLS Light Pollution Filter - Canon EOS APS Clip
$129.95
Item # AK-CLS-EOS
  • Wow, an Astronomik CLS Light Pollution Filter for your standard Canon EOS camera that clips in above the mirror! All normal functions of your EOS camera will be unaffected... focus, image stabilization, etc.
  • The Astronomik CLS Light Pollution Filter is presented in a Canon EOS Clip format, and is compatible with most Canon EOS Cameras (300D, 350D, 400D, 20D, 20Da, 30D, 40D).
  • 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.
  • The Astronomik Visual CLS Light Pollution Filter are optimized for use with aperture ratios from 1:3 to 1:15.
  • 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.
Description

Details

Astronomik CLS Light Pollution Filter - Canon EOS APS Clip

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.

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 and even works well with binoculars.

The Astronomik CLS Light Pollution Filter is good for use under both dark and urban skies for reducing light pollution made by mercury-vapor lamps. For film photography and modified DLSR use, the CLS filter gives good performance and near perfect color balance. While this filter does perform well with webcam and video equipment under light polluted skies, it is not suitable for planetary use.

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 


About the Astronomik Clip-Filter System....

The patented Astronomik Clip-Filter 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 Clip-Filter System. The Clip-Filter 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.)

Note: For Photographers interested in daylight IR-Photography a "MC-modification" is possible for some cameras. If you are interested in this, please send us a short mail. We will give you more details. The "MC-modification" gives you no advantage for normal astrophotography!   If you have a full-frame EOS camera, like the 5D or 6D, you should buy the Astronomik CLS XL EOS Clip Filter instead.

Astronomik Visual CLS Light Pollution Filter - Canon EOS Clip Features.

  • 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

Astronomik Product Number: CLS-EOS

Additional Information

Additional Information

SKU AK-CLS-EOS
Manufacturer Astronomik
Type of Filter Light Pollution Reduction
Filter Usage Imaging
Single or Set? Single Filter
Filter Size EOS Clip
Filter Shape EOS Clip
Filter Mounted? Mounted
Warranty 10 Year Warranty
Reviews

Customer Reviews 4 item(s)

Greatly reduces light pollution
I bought this about a month ago. I did have to spread the "wings" on the filter to make it fit snugly into my Canon EOS Rebel T3. Now fits fine. Because of light pollution my astrophotography exposures were limited to about 60 sec at ISO 1600. With the filter I can now achieve 3 min or greater exposures. Took a beautiful California Nebula image the other day with this filter.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by STEVE333 / (Posted on 10/25/2014)
Probably will not use it
After one night out I am not convinced the CLS will be helpful for my imaging at my site. I am in a suburban setting with a lot of sodium vapor scatter in the night sky. I have a T1i with a 50mm lens (by the way the CLS is not compatible with the stock 18-55mm lens). Here are four images. The top row is without CLS and with CLS. Both 15 second exposures. It is apparent the filter blocks the sodium glow. The bottom row are the same two images flat fielded using with and without CLS as appropriate. These two are nearly indistinguishable. The CLS cuts out the sodium but also some green and blue so the total signal is reduced. If one can afford to take exposures 2 to 3 times longer with the CLS, then the signal to noise would be better than without it.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Stargazer / (Posted on 5/26/2014)
Excellent filter
I must admit, I was a little bit skeptical about how useful this filter would be, but I have been nothing but pleased!
Easy to install and remove and great results. I would definitely recommend this to my friends.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Douggiee / (Posted on 4/8/2013)
Works well
Easy to install, easy to remove. The filter works well from my suburban skies. I'm very happy with it and would certainly buy it again.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by BK / (Posted on 6/24/2011)
Included Items

Included Items

  • Astronomik CLS Light Pollution Filter Clip for Canon EOS APS Cameras
  • Plastic Storage Case
Questions & Answers

Product Questions

is this the filter you where showing at the ny show and can I put it in my 60d
16
Will it fit/work with Canon EOS REBEL T3?
12
will this filter fit the t31?
6
Will the use of an Astronomik CLS Canon clip filter in an unmodified stock T5i really result in greater red response as some seem to say? If so that doesn't seem reasonable if the stock IR filter is still present. Please explain. Thank you.
5
Will this filter fit the canon t5i?
5
Will this filter fit the Canon Sxi (450D)?
3
Does it fit the Canon 50D?
3
Does it fit in Canon EOS 700D ? and 70D
3
Will it fit/work with Canon EOS 7d?
3
I see lots of words about this filter, but where are the charts showing cutoff frequencies, transmission, etc?
0
How easily will this install in my Canon 300D? Are there any modifications to the camera necessary to use this product?
0
If I use this with a "DSLR (original)" for nightscapes will the color of the land be shifted any? And if so will the shift be correctable?
0
Will this filter work on the 5D MKII ?
-2
Does the CLS LP filter work on a Canon 60D attached with a T ring to Celestron EDGE SCT?
-3
The filter Astronomik CLS Clip Filter for Canon EOS cams produce goods results with Canon EOS 60D and the TPO RC6?
-8
Does it fit in the Rebel SL1?
-11
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