Baader Plantarium Filter For Sale
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Baader Plantarium Filter:
Baader 2" Eyepiece Filter Set - 6 Colors
This set of Baader Eyepiece Filters - Round, 2" size includes six (6) precision color filters, which will be ideal for using when you wish to observe lunar and planetary details.
Baader Planetarium Color Filters Represent the Finest In Quality and Precision
Straie-free substrates are polished parallel to 30 arcsec to eliminate wedge errors
7 Layer Multicoatings with anti-reflection multicoatings
Red (610 nm) Longpass Filter
Orange (570 nm) Longpass Filter
Yellow (495 nm) Longpass Filter
Green (500 nm) Bandpass Filter
Bright Blue (470 nm) Bandpass Filter
Dark Blue (435 nm) Bandpass Filter
2" Diameter for 2" Eyepieces and large diagonal format
Baader 2" Eyepiece Filter Set - 6 Colors - Features:
Freedom from Ghost images, even when stacked; striae-free substrates are polished parallel to 30 arcsec to avoid wedge errors
Finest 7-layer hard multicoatings on both faces feature 0.25% residual reflections
Carefully designed spectral characteristics; filters may be stacked without image degradation or ghosting, in order to provide even narrower passbands; combined with any of the other Baader filters for interesting possibilities
No reduction in sharpness, even at high magnifications or when using the filter far ahead of the focal plane as for digital imaging, or in front of a diagonal or binoviewer
Extremely High Transmissions result in maximum contrast and isolation of planetary details, even with smaller telescopes. Efficiencies of the three longpass filters (Red, Orange, and Yellow) peaks at 98%, and efficiencies of the three bandpass filters (Green, Blue, Dark Blue) achieve 70%
Note: I am moving into a large city with limited telescope viewing options. new - never used. The items are 399 at retailers.