Image of the day Captured by John Roach Enhanced Uranus showing Polar Cap and possible Aurora About Astromart Terms of Service Privacy Policy Help & FAQ Astronomy Links User Profiles Top Users List Sponsors Supporters RSS Feeds My Account Log In New to Astromart? Register an account... Need Help? [email protected] Home Forums IMAGING Digital SLR AstroPhotography LPS LPS Started by Kevin, 11/25/2009 01:13AM Post Reply Posted 11/25/2009 01:13AM Opening Post Kevin Brennan View public profile Send a private message to Kevin Brennan Find more posts by Kevin Brennan Find threads started by Kevin Brennan Forum Member Join Date: May 2001 Location: Anderson SC, US Posts: 310 What is the difference between IDAS P1, and IDAS P2 filters? Thanks,Kevin Quote Post Reply Funding Member Sponsors Astromart Customer Service APM-Telescopes ASTROPHOTOGRAPHY BY MARTIN PUGH kwtelescope OMI OPTICS USA LLC SellTelescopes.com BBLABS LLC Waite Research AstroMart LLC Desert Sky Astro Products RemoteSkies.net BW FocusKnobs astronomy-shoppe Anacortes Telescope Matsumoto Company View all sponsors Search News Classifieds Auctions Reviews & Articles Members Reviews & Articles Forums Calendar Events Go