First dry run two nights ago I put this filter in the 2" thread of a Baader Hyperion and stuck that in my Vixen r200ss. I was blown away! The details and colours in M42 alone were deeply satisfying. Instantly gave me that warm fuzzy feeling inside when observing becomes an almost magical experience. Well recommended!

I bought this filter for observing Mars . It certainly allows some finer detail to be seen and does not change the tone colours. I found it was most effective in my 8 inch Dob, but it also improved the image, though more subtly in my 120 ED frac.

Looks good and gets excellent views. I have been unable to ise yet but looks and feels of a very high quality

I have the 1.25", (purchased many years ago before FLO was established).
For me it is the 'Swiss Army knife' of filters. This is the 'all in one' or 'Marmite' filter.
Either you love it or hate it.

I've had one of these for a few years but until recently I didn't use it much until recently and to be honest its about to be removed from my setup very soon. every image i have taken has a really bad colour cast, which seems to be impossible to balance out. I'll be buying another LPF very soon!

Excellent all around filter. Works great visualy: helps on Mars obervation, really makes Jupiter GRS "pop-out" and is an excellent moon filter. It can also be used stacked with the fringe killer as it neutralizes the yellow tint the latter adds to the view. May also be used as a mild light pollution filter in astrophotography applications: I very much prefer it to the UHC-S filter - and other light pollution filters - as it does not affect the color balance and provides better light througput.

To be honest, I can't say that this has made much difference so it stays in its box I'm afraid to say. Still it's well made and well packed.

Bought the 1.25 version of this filter as I already had a 2" Skywatcher LP filter. To be honest it is difficult to see much difference between the two, but it does what it is supposed to do and you cannot ask more than that.

After reading many good comments about this filter, I purchased one and have never looked back. I have since sold my 'moon filters', light pollution and coloured planetary filters as the Baader Neodymium Filter (BNF) has effectively replaced them all.
I generally prefer an unfiltered view if possible and especially on the moon to about 50% illumination. However, when the moon is fuller than this it gets quite bright and detail is washed out. Using the BNF creates a grey and contrasty image which appears extremely natural.
I also use the BNF on Jupiter in particular and it does create a colour change but then detail becomes much more visible over a period of observing.
It also does what it says on the tin regarding light pollution and therefore I consider this a 3 into 1 filter - great value indeed!