Society for Popular Astronomy

Light Pollution Filters
Page 1 of 1

Author:  Peter1959 [ Fri Feb 10, 2012 6:10 am ]
Post subject:  Light Pollution Filters

I'm considering getting a light pollution filter and was wondering if these are worth getting as they are a little on the expensive side.

Any advice/comments would be appreciated.


Author:  David Frydman [ Fri Feb 10, 2012 9:02 am ]
Post subject: 

Dear Peter,

It depends on what telescope you use, its aperture.
Also what light pollution you have, street lights neighbours lights general sky glow.
Also whether for visual or imaging.
And what objects you are looking for.

I did find some help years ago, but have no current knowledge.
The streetlights are changing and may be mixed.

They may be a help but really you have to try them and see.
Perhaps you have a local astro society and could try them.

Others here may advise better.

Regards, David

Author:  David Frydman [ Fri Feb 10, 2012 11:02 am ]
Post subject: 

I think light pollution filters only really help nebulae.

Maybe things like M42, maybe planetary nebulae. I cannot remember.
I don't think they help see galaxies or other things.
Maybe not Pleiades nebulosity.

Somebody will advise.

regards, David

Author:  Cepheus42 [ Wed Sep 18, 2013 6:20 pm ]
Post subject:  Re: Light Pollution Filters

Hi, I'm no expert and live in South London but I recently purchased n Astronomik CLS-Filter.

It helps strip away some of the glare caused by present day sodium street lighting and I have found it does make a difference for observational use. It comes in both 1.25" and 2 " versions. The 2" is just over the £120 mark but it does help. Can't wait to try it out when I finally get to grips with photography.

Hope that helps.

Author:  brian livesey [ Wed Oct 16, 2013 10:18 am ]
Post subject:  Re: Light Pollution Filters

I have the Astronomik filter, too, Peter. As you said, it does give some improvement. To complement this filter, you could get a Olll filter. This type of filter is used for planetary nebulae, such as the Ring nebula in Lyra.

Author:  Cepheus42 [ Sat Nov 23, 2013 12:26 pm ]
Post subject:  Re: Light Pollution Filters

Hi Brian,

I'm making rapid additions to my filter set at a pace. There are some well priced Revelation coloured filters at about £13 a piece which have made some difference in observing Jupiter and with my initial attempts in astrophotography.

I have found it's well worth doing some research on filters as it's amazing what a difference they can make when used properly. The different uses can be a bit confusing at first, but I have found it essential to do a planning session before going out.

If you select a list of targets, research them and work out which filter / equipment is useful for each target, it saves time and give you a more seamless and enjoyable observing session. Also if you make a target diary, it helps you to keep a record of what you did, when you did it, and what worked and didn't. It also means that you learn more about the object and the subject matter as you go along.

Oxygen III is my next purchase, not sure if I can wait for Santa!

Author:  brian livesey [ Mon Nov 25, 2013 10:54 am ]
Post subject:  Re: Light Pollution Filters

Hope you find this useful: ... ilter.html .

Page 1 of 1 All times are UTC
Powered by phpBB® Forum Software © phpBB Group