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Scratches on filters

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#1 cmckow91

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Posted 25 January 2021 - 06:18 PM

I was wondering if anyone had scratched a filter before and kept using it? Did it effect your images? Stars? Usually I would find out on my own but it’s going to cloudy for a week probably two. The scratch is only viable under direct overhead light. Like under a lamp or so. It’s the optolong l enhance 2 inch. I don’t shoot very fast. F/5 max. Thanks

#2 ngc7319_20

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Posted 25 January 2021 - 06:28 PM

Couple light scratches will usually have no effect.  Typically the area in the scratch is microscopic compared to the OTA light cone footprint at the filter.  I guess if you somehow got the focal plane right at the filter, you might notice something -- but that will be hard to do with most eyepieces and cameras.


Edited by ngc7319_20, 25 January 2021 - 06:28 PM.


#3 Jim Waters

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Posted 25 January 2021 - 06:44 PM

Try using the filter.

 

If the scratch cuts through the 'vapor deposition' or metallic coating you will have issues.



#4 cmckow91

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Posted 25 January 2021 - 06:46 PM

Thanks. I didn’t want to have to buy a new one. For anyone wondering. I’ll post some frames once I get to image. Hopefully it works out


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