Used only 2-3 times. New $199.95 pick this one up for $150.00 a 25% savings. Moved to CCD imaging and just do not use this fine filter. Estimate shipping costs at $5.00 USPS or UPS Ground. Killer Nebula views with great transmission numbers.
The Lumicon Ultra-High-Contrast narrow bandpass filter (24nm) isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) and H-beta line (486nm) emitted by planetary and most emission nebulae, while blocking, completely the rest of the overall spectrum of light. The result is extreme contrast between the black background of space