- UV/IR-cut (visible-pass) filter: ≥ 95% transmittance
- Blocking depth OD 4.0 (outside 400-700 nm)
- Frame ~7.5 mm thick (5 mm body + 2.5 mm thread); glass 1.85 mm
- Slim profile fits drawer and filter-wheel systems
Speciality filters for everything else: UV/IR cut, Venus, Solar (white-light or Ca-K), methane (CH4), planetary contrast filters
Showing all 9 results
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Anti-Halo 2 inch UV IR-CUT Filter
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CH4 8nm 1.25 inch Filter E-series
- CH4 Methane filter: CWL 889 nm, 8 nm bandwidth
- Threaded 1.25″ filter: M28.5×0.6
- Transmittance ≈ 90%, OD 4 blocking
- Slim 7.5 mm frame; 1.85 mm glass
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ERF 1.25 inch Filter S-series for Quark Chromosphere
- Energy rejection for solar Hα imaging
- Reflects IR/UV, reduces glare & heat
- 1.25″ threaded (M28.5×0.6)
- Use with Daystar Quark
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ERF 2 inch Filter S-series for Quark Chromosphere
- Energy rejection filter for solar Hα imaging
- Reflects UV/IR; enhances contrast
- 2″ threaded (M48x0.75)
- Use with Daystar Quark
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IR685nm 1.25 inch IR-Pass Filter S-series
- IR pass above 685 nm
- M28.5×0.6 1.25″ thread
- Improves lunar/planetary clarity
- 7.5 mm slim frame
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IR850nm 1.25 inch IR-Pass Filter S-series
- IR long-pass >850 nm
- M28.5×0.6 1.25″ thread
- Blocks visible light
- 7.5 mm frame; 1.85 mm glass
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Photosphere 7.5nm 1.25 inch Filter E-series
- Hα 656.3 nm ±7.5 nm
- Transmission ≥ 90%
- M28.5×0.6 1.25″ thread
- Slim 7.5 mm frame
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UV IR-CUT 1.25 inch Filter S-series
- UV/IR cut: 420-680 nm passband
- 1.25″ threaded (M28.5×0.6)
- Protects sensors and color accuracy
- OD3 rejection; 7.5 mm frame
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UVenus 1.25 inch UV-PASS Filter E-series
- UV pass: 320-380 nm
- Transmission ≥ 85-90%
- M28.5×0.6 1.25″ thread
- Slim 7.5 mm frame; 1.85 mm glass
