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- #55 in Telescope Filters
Product Description
Astronomia variable polarizing filters are made up of two individual filters, which one's variable darkening effect is produced by rotating the lower filter relative to the upper one.
Just One Step To Install, Convenient For Everyone Even For Astronomical Beginner
Astromania 1.25" Variable Grey Polarizing Filter - Good and Trustworthy Partner
Dennis R Price
Reviewed in the United States on January 9, 2025
Dual polarized filters allows adjustment of brightness of moon or other objects. Fine quality. Can be used on end of eyepiece or diagonal. Eyepiece may set up higher due to extra added length.
Ron S.
Reviewed in the United States on September 27, 2024
The main reason I purchased this filter is it’s ability to separate into two parts. I’m able to attach one piece to my 2-inch barlow lens and the other to the eyepiece . This way I don’t have to remove the eyepiece to adjust the amount of filtering, I just need to turn the eyepiece. This works well for telescopes that use a diagonal too. I like using these filters for observing the Moon, and the brighter planets like Venus and Jupiter. It appears to be made well. No issues attaching the filter to the barlow or eyepiece. The only complaint I have is, I did have to clean the filter. There was a smudge on the glass and some particles that had to be blown off. I also had to clean out the storage case to remove some small particles. All is good though and I do recommend it.
steve w
Reviewed in the United States on September 22, 2024
A variable polarizer is what you need to view details on the moon, and this one works perfectly at a great price. Highly recommended.
STOICA GABRIEL
Reviewed in the United States on July 20, 2023
Although I have not ordered this product, it is a very good quality product! Thanks Astromania!
fuzzyface
Reviewed in the United States on February 4, 2023
Price point and delivery incredible. This handy filter makes such an amazing difference in being able to control the amount of light entering the telescope with just a simple twist of the filter. Allows great detail in objects you are viewing. The filter is very well built and I absolutely recommend this little beauty as a must have in your filter collection.
Buck
Reviewed in the United States on November 4, 2022
has 2 polarized layers. one screws into your eyepiece and the other is attached and you rotate it to vary the darkness of the filter. The part that rotates spins almost too freely. I wish it had just a little resistance so I could be sure it stays where I put it. Also, I wish there were index marks around the edges where the 2 layers meet to show where the darkest and lightest alignment would be and a few marks in between so you know how far you've turned it. The way it is now you have to take out the eyepiece, give the filter a little twist, put it back and hope you didn't make it too dark or too light.
Sergey C.
Reviewed in the United States on September 2, 2020
Fits into regular 1.25" eyepiece with standard filter threads. Works as expected - using it as a moon filter / dimming filter for planetary observation with my 4" Maksutov scope.
Dan H
Reviewed in the United States on November 25, 2019
I purchased this filter to use on my Celestron 9.25" telescope for viewing the moon. The idea of having a variable polarizing filter is great and this filter works very well. On a full moon, the filter can be adjusted to make the viewing very comfortable - it's nice to be able to look at the entire moon without being blinded! With different phases of the moon the filter can easily be adjusted to provide just the right combination of detail and comfort. I am very impressed.
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