A really good filter and although I have the 2" version I do not doubt that the 1.25" is just as good. A good value alternative to the more expensive filters.
Skywatcher Light Pollution Filter
Rating (max 5):
5
sodium killer - Winston
In my location on the south coast we have horrid old sodium orange lights of the old sling it in all direction sort,having nearly given up using a dslr as 2 min + exposures you end up with a bright orange pic,even down to 1 min you still see the intrution,after using the 1 1/4 size the images are pure black,totally taking out the false colour,have ordered a 2in version also flo do a one piece adaptor(no more bits unscrewing and cameras doing there own thing)in the past have used sw direct connection but this does not allow the addition of any form of filter,if your in a sodium light area these are superb,as other reviewers say maybe not for all light types.
Skywatcher Light Pollution Filter
Rating (max 5):
4
Good - Tom
The filter works well for light pollution, though only for the light from the orange sulphur street lights on these it does work very well.
It also cuts down the general skyglow as well, which is very welcome.
Skywatcher Light Pollution Filter
Rating (max 5):
3
Either awesome or poor depending on your light pollution - Mike
This is a good filter but it's performance will vary from miraculous to a damp squib depending on the type of light pollution you are facing.
If you're observing through city light pollution, don't expect much improvement. There's just too much light for the filter to block out. If the filter blocked out all that light you wouldn't see anything at all.
However, if you have old street lights, the deep orange low pressure sodium ones - this filter will do an excellent job of cutting that out. It works too on the higher pressure sodium (still orange) lights but not quite as well as these lights are brighter.
As for floodlights, security lighting, etc, these filters won't do much.
I highly recommend these filters for all observers using 1.25" eyepieces. If you're in England, you really need one of these in your eyepiece box. If you're in a city, they're helpful too in case you travel outside. I've tested this filter from two English star parties from relatively dark skies and they did improve the views, increasing contrast and dulling down the orange glow from nearby towns.
