Baader 3.5/4nm f/2 Ultra-Highspeed-Filter-Set 1¼" CMOS-optimized (Ha /OIII/SII)
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Product details
| Management number | 22510306 | Release Date | 2025/11/11 | List Price | $359.99 | Model Number | 22510306 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
• Baader CMOS-Optimized 3.5/4nm f/2 Ultra-Highspeed - 1.25" Filter Set
• 1¼" x 2 mm Baader CMOS H-alpha / O-III / S-II f/2 Ultra-Highspeed Filter Set – Premium Grade – with 1¼" (28,5 mm) filter thread
• 3.5 / 4 nm FWHM (to harmonize the exposure time from H-alpha with O-III / S-II), recommended for extremely fast optical systems from < f/2.3
• Specially designed for the special filter requirements when used with extremely fast f/2 optics like the Celestron RASA astrographs
• For highest contrast even at strongest light pollution, minimizes star size, emphasizes finest nebula detail – indispensable under Bortle 9/8/7/(6) skies
• Reflex-Blocker™ hard coated and planeoptically polished – with sealed coating edges (Life-Coat™)
• Blackened edges all around, with filter-lead-side-indicator in the form of a telescope-sided black outer rim
• Optimized for modern CMOS cameras, but likewise excellent for CCD camera technologies
• Mounted in Baader Low Profile Filter Cell (LPFC) – 6 mm height
| Category | Other > Other |
|---|---|
| Size | N/A |
| Brand | None |
| Condition | Like new |
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