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Baader Planetarium 2" Six Piece Eyepiece Filter Set - FCFS-2
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
- Orange (570 nm) Longpass
- Yellow (495 nm) Longpass
- Green (500 nm) Bandpass
- Bright Blue (470 nm) Bandpass
- Dark Blue (435 nm) Bandpass
- 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%