Upgrading my filters to a full set that fits my STL Camera (50mm unmounted) that are also Par-focal. These filters (and the Broadband posted) are in A1 Condition, always kept in their packets. They are about 8 Months Old.
Enhance your deep sky viewing with the latest in multi-layer coating technology. Thousand Oaks H-Beta Filters transmit desired wave-lengths in a very steep slope vs. gentle transition slopes in competitive brands. Thousand Oaks Hydrogren-Beta filters give you better contrast and overall performance.
H-Beta filters are designed for a narrow hydrogen-beta wavelength and work well for objects such as the "Horsehead" nebula.
Part Number : LP-4
Sale Price Now $140
Pickup from Melbourne or Postage Extra
Last edited by Big Dave; 06-01-2009 at 08:34 PM.
Reason: Price Change
