FWIW
Some links you might like to wander through regarding filters
http://www.lumicon.com/faq.php?p=faq-f
http://www.lumicon.com/filterspec.php (look toward the bottom)
#80A Blue
Moon: Feature Contrast
Jupiter: Belts, Rilles, Festoons, Great Red Spot
Saturn: Belts, Polar Regions
For Nebula
http://pages.sbcglobal.net/raycash/filters.htm
http://www.ilddat.demon.co.uk/filters.html
CS, Bill
Some links you might like to wander through regarding filters
http://www.lumicon.com/faq.php?p=faq-f
http://www.lumicon.com/filterspec.php (look toward the bottom)
#80A Blue
Moon: Feature Contrast
Jupiter: Belts, Rilles, Festoons, Great Red Spot
Saturn: Belts, Polar Regions
For Nebula
http://pages.sbcglobal.net/raycash/filters.htm
http://www.ilddat.demon.co.uk/filters.html
CS, Bill