Quote:
Originally Posted by ausastronomer
Hi Julian,
If you read my article on "Visual Astronomy and the use of filters" it explains the difference between neutral density (moon) filters and variable polarising filters.
http://www.iceinspace.com.au/63-680-0-0-1-0.html
In my opinion the Variable Polarising filter from Orion or Lumicon is easily the best option. It gives variable rates of blockout from 5% to 35% which is user adjustable. You may want to vary the degree of blockout depending on scope aperture, eyepiece and moon phase.
http://www.lumicon.com/astronomy-accessories.php?cid=21
You need to make sure you get the "variable" polariser not the single polariser.
Cheers,
John B |
yeah thanks john your very knowledgeable it seems on these things cheers and thanks
