Wurde zurückgeschickt.

Definitely has helped with my light pollution problem here. I would recommend it.

I enjoy having this lense with my extensive collection. The lens helps reduce light pollution and moon viewing is slightly better. The lens isn't amazing but, works, I was able to see Orion's Nebula on the constellation's belt. The lens increases visibility of hard to see objects every so slightly. I enjoy using it, not as impressive as I originally thought but, not disappointed either. I also viewed Andromeda's Galaxy with the help of the lens.

Adds a lot more contrast to camera astro images. Not sure if it is great, as my experience is limited, but can see a large difference in 180 second exposures, far less washed out.

Cheap

Does a good job of cutting out light pollution. The sky is much more black than without it. However it does cause a halo. If you turn down the exposure it does go away or weakens up enough not to notice. For the price I can't complain too much. Attached a picture with the exposure turned up to show the halo and one turned down.

My brand new filter arrived with a perfect finger print on it. Almost positive the finger print is good enough to identify the worker. Quality control is severely lacking.

Disclaimer: I purchased this directly from Solomark before it was available on Amazon.This has been one of the best accessory purchases I've made, and I was impressed with it the first time I tried it. It does exactly what it says it does: boosts contrast by blocking some frequencies of light (commonly used by street lights) and letting through light in the wavelengths emitted by most nebulae. I think this type of filter is also sometimes called a "narrowband" filter, because it lets through a narrower part of the spectrum, thus blocking more light. I have a similar "broadband" filter, and I suppose theoretically there may be some objects that show up better with it than the UHC filter but I haven't come across any, so between the two the UHC filter is the way to go (in my experience at least). Your mileage may vary.Basically, it works by darkening the background so you can see more nebulosity that would otherwise be too faint. Unfortunately, it doesn't do much else and doesn't help at all with star clusters, galaxies, etc. While it blocks some of the streetlight glow it also blocks some of the light from the stars, so they end up being dimmed as much as the background and there's no net improvement, or at least not enough for me to be able to tell a difference.But it certainly helps for nebulae. I live in a pretty light polluted area (beach tourist town in Florida), so most things dimmer than Magnitude 8 are invisible to me in my telescopes. This filter has allowed me to actually see some small planetary nebulae that would otherwise be too washed out by the background to be seen, and I'm able to see more detail and more of the dimmer fringe of larger nebulae like the Orion Nebula, the Dumbbell Nebula, and the Lagoon Nebula. It helps with finding the little planetary nebulae because it dims everything but the nebula, i.e. you can look at the same spot with and without the filter, and with the filter in place the stars are dimmed somewhat but the nebula isn't. The nebula is the dot that doesn't get dimmer when you thread in the filter. It works well at both low and high powers, too.To echo another reviewer, I tend to do astronomy on a budget and I was hesitant to shell out nearly $100 on a "name brand" filter when I had no idea how much (if any) difference it would make for me. This one was much more affordably priced, and from what I've heard I think it works just as well as the pricier ones (for all I know it may be identical but with a different brand label on it). I'm glad I bought it.As yet another reviewer pointed out, it's also as much of a help in darker skies as well, since it helps make more of the nebulosity visible. I've read some critics who dismiss the use of filters like this for smaller telescopes, but it makes as much difference in my 60mm refractor and 76mm reflector as it does in my 130mm reflector. It's a noticeable improvement and helps you see things you wouldn't otherwise and this worth it in my book. Plus, it works with any telescope, so it'll always be useful.One thing that does take some getting used to is that it gives everything a greenish tint. Not enough to be distracting, but it is noticeable. I don't know what effect it may have on image colors if used for astrophotography since that's not my thing, but since everything looks black and white for visual observing it doesn't really make a difference.The threads are well made and it threads perfectly into every eyepiece I own. It came in a nice flip-open snap-closed plastic case with a foam insert, and even in the dark it's easy to take in and out of the case without touching the glass.The most amazing thing to me continues to be the price. If you're not sure if a light pollution filter will benefit you or not (and it probably will), this is a relatively inexpensive way to find out. Best of all, once you have it you'll probably feel no need to pick up a pricier one since this one will likely meet all of your needs. I've purchased a bunch of things in my efforts to combat light pollution in my yard and I ended up being disappointed by most of them, but this is one that exceeded my expectations.

Not good at all. It doesn't reduces the light pollution. It simply darken all celestial objects and adds color distortion and chromatic aberration to your observations.

Excelent Light Pollution filter!The difference is even noticiable from looking through it without a telescope!

I love astronomy, but my checkbook often finds itself abused by my favorite hobby. I am always looking for that gadget that will do what the high end stuff does with at a much lower cost. More often than not, I end up disappointed. Not this time! This filter is excellent. I live is an area with some light pollution. I can still see a faint glow from the Milky Way on really,really good nights. The major stars in most every constellation are visible almost every clear night, so I am not looking for a light pollution slayer. I wanted to boost contrast... And boost contrast it does. The sky becomes much blacker and the nebulas become much brighter. It is amazing! From my house, I can not see any nebulosity in the eagle nebula. I put this filter on, and the nebulosity became immediately evident. The lagoon nebula is usually just a streak of nebulosity around the two stars next to the cluster. With this filter it became much larger with the dark streak dividing it popping right out. The triffid is usually a challenge, it was easy to spot with this filter. He blinking planetary became very bright and easy to see. It really does work. It will do nothing for galaxies. I tried but it just makes them dimmer. I didn't bother with globular clusters, expecting the same results, but if you like finding nebulas, this is the filter to get.