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Astronomik CLS EOS Clip-Filter Test


Earl

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It sure is but well worth it IMHO. They do two version of it aswell, one is better suited to nebula imaging and the other galaxy if my memory serves me right. I cant remember which one the P2 is but thats the one you want.

Dont shoot the messenger but I thought you'd prefer to see all the options, imagine if I had told you after you had bought a second one :)

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Wow! i realised that the CLS filters were usefull but i had no idea how effective they were! this is the first real world test i have seen on a non astronomical subject.

i just wish my 10d supported the EOS clip type filter. i could use the 2" filter when imaging through my telescope, but i'd need another solution for camera lenses.

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Would this negate the reason to mod your DSLR? Looks like a brilliant solution.

No this filter is to reduce light pollution. The reason to mod a DSLR is to remove the original IR cut filter thus allowing light from the H-alpha wavelengths to be detected.

the Astronomik CLS is avaliable with an IR cut for use with modified DSLR's and without the IR cut which is for use with standatd DSLR's.

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Would this negate the reason to mod your DSLR? Looks like a brilliant solution.

Unfortunately not, the built in Canon filter stills shuts out alot of the red Ha, this CLS filter is purely for cutting out light polution, it lets all the good stuff right through, its at that point the good stuff hits the Canon filters.

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Ah right. When i read it's description I wrongly read the IR part as saying it removed the functionality of the IR filter.

Thanks for clearing it up guys :)

One thing...if you removed the original IR filter why would you then buy a light pollution filter with IR filtering back in?

Just getting to grips with DSLR modding :)

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  • 4 weeks later...

Just ordered the CLS for my newly acquired modded 1000D, and having read the above I'm a little confused. May I ask the question again - why would you add an IR cut filter to a modded camera please? (mine has the filter removed only)

David

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Depends on what sort of light polution you have, all the street lights near me are sodium ones so the CLS CCD works amazingly well.

You need to check to see what your LP is like first before buying the more expensive specialist ones. A quick call to the local council with your location will normally get an accurate answer. If your using general purpose ones like the Skywatcher one then its not too much of a worry.

You can get sodium, mercury, metal halide lighting etc etc. I think the CLS CCD is particuarly good at dealing with sodium and mercury as they are the more common types.

If you have a look on the Astronomik site they have the wavelength charts available for you to look at.

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Just ordered the CLS for my newly acquired modded 1000D, and having read the above I'm a little confused. May I ask the question again - why would you add an IR cut filter to a modded camera please? (mine has the filter removed only)

David

The reason for having IR cut in relation to astro imaging is to reduce star bloat which particularly affects refractors.

Tony..

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