SVBONY SV128 2" Moon Filter, Multi Coating Optical Glass, Variable Polarizing Telescope Filter, Aluminum Frame Telescope Accessories for Moon Planet Astrophotography&Observation

Fantastic Addition to My Telescope The SVBONY 1.25" Variable Polarizing Filter has significantly enhanced my stargazing experience. Excellent Performance: This filter greatly reduces glare and enhances contrast, making celestial details much clearer. Easy to Use: It fits perfectly on my telescope eyepiece and is easy to adjust for the perfect amount of light. High Quality: The build quality is solid, and it feels durable and well-made. Overall, this filter has been a game-changer for my astronomical observations. Highly recommend it to any stargazing enthusiast!

I'm very impressed with this SVBONY variable polarizing filter. When I got into astronomy decades ago, I needed an entire set of fixed polarizing filters for different uses and conditions. This filter has become my "one size fits all" polarizing filter solution! It's not only great for 'dimming down' the very bright moon (of course) but works great for bright planets like Jupiter and for solar astronomy -- when using an over the aperture optical grade solar filter. I particularly enjoy solar astronomy and this variable filter not only helps bring out planetary features like the bands of Jupiter but features of the sun like sunspots and faculae. It also works very well when using an eyepiece projection into a camera (or even a smartphone, like I use). Important: NEVER use a camera or look at the sun through a telescope without using an optically rated, over-the-aperture solar filter (as shown in my photos). Yes, it' is somewhat inconvenient to remove the eyepiece in order to make adjustments, but it's not nearly as inconvenient as removing the eyepiece, unscrewing a filter of a specific percentage, screwing in a different fixed percentage filter, then putting the eyepiece back in … only to do it all again if the fixed percentage filter you choose was still not right for the application. The range of percentages on this SVBONY variable polarizing filter is great, the filter's optical quality seems excellent and it's adjustment is very smooth. This is my first SVBONY product purchase, but certainly not the last.

Great adjustable filter. Clear optics, easy to use. Makes moon viewing so much easier on the eyes.

This is my first filter like this, and I have to say I’m really impressed. It does exactly what I wanted to do and helps me view the moon without going blind. I only wish that I could adjust it more easily without taking the eyepiece and filter off but other than that, I think it’s a great buy and would definitely recommend it

Very good. Could have had a little Knurling to aid the functional use in rotation.

Fits the factory eyepieces that came with my Orion 90mm telescope, my Aperture 2x Barlow, and the sv diagonal I bought for image correction. Good smooth adjustability. Stays where you set it, for me anyways. Gives a different perspective, I LIKE IT!

Very effective, daylight to midnight instantly. The fit is absolutely fine, it threads in nicely and is secure. There is no rattling around.

Great variable filter for viewing the moon & Jupiter

Fit telescope

Sehr leicht zu handhaben, eine Skala am Rand wäre jedoch hilfreich!

Ya lo he probado y funciona excelente...al menos los pocos días que he probado este filtro para observación es muy bueno...

At low, medium and high polarizing settings it does not appear to harm the clarity of the view. Just does its job of reducing light. Very happy with it for the price.

Great product, I use this to add to my telescope as a brightness function