Best Telescope Filters Under $100 (2026)
We ranked filters under $100 by optical function, build compatibility (mount sizes and drawer support), user ratings, and overall value score for common telescope workflows
Top Picks
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1
Celestron 1.25" Variable Polarizing Moon Filter
Variable polarizing moon filter for 1.25" eyepieces reduces brightness and glare for moon, Venus, and bright double stars. Easy to adjust brightness and threads onto Celestron 1.25" eyepieces
- adjustable 1-40% light transmission
- rotating ring for brightness control
- fits 1.25" eyepieces
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2
Celestron EclipSmart Solar Eclipse Filter for SCT Telescopes
Solar-safe telescope filter compatible with 5 Schmidt-Cassegrain telescopes; enables viewing eclipses and sunspots with secure fit. Customers note stable attachment and safety features
- ISO safety standard compliance
- secure two-strap attachment
- compatibility with common SCT models
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3
Rollei Astroklar Light Pollution Filter 67mm for Night Photography
Astroklar light pollution filter reduces artificial light while shooting at night. Manufactured from optical glass with double-sided water-repellent nano coating; neutral in infrared range. Customer insight notes mixed sentiment
- reduces artificial light pollution
- nanocoated glass for clarity
- infrared-neutral performance
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4
SV226 M54 Filter Drawer for 2'' filters
Astrophotography filter drawer with dual magnets for secure 2'' filters and fast swapping. Compatible with full-frame setups and adaptable to 2"/1.25" filters, with two drawers for quick transitions
- dual magnets for stability
- two filter drawers for quick swaps
- vignetting-free field with 2-inch filters
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5
OPTOLONG 1.25" UV/IR Cut Filter for CCD Astrophotography
UV/IR cut filter for CCD astrophotography with high transmission at key wavelengths. Maintains telescope performance with durable, scratch-resistant material. Customer insight mentions no explicit feedback
- high wavelength transmission
- durable filter material
- all-round deep sky utility
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6
SVBONY 2" CLS Broadband Telescope Filter
2" CLS broadband telescope filter reduces city lights for better deep-sky viewing and photography. Useful for color CCDs and unmodified DSLRs; performance can vary by setup, with some users noting fit issues
- high pass-band transmission
- coating stability across temperature
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7
SVBONY SV226 Filter Drawer for 1.25" and 2" filters
Compact double-drawer filter holder with M42-M48 adapter for 1.25" and 2" filters. Noted for solid build and versatile compatibility; some users report mixed magnet strength and light leakage concerns
- dual filter drawer design
- 2" and 1.25" compatibility
- M42-M48 adapter support
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8
Celestron Solar Eclipse Telescope Filter 8 Schmidt-Cassegrain/EdgeHD
Solar-safe filter conforming to ISO 12312-2, fits Celestron 8 Schmidt-Cassegrain and EdgeHD telescopes. Provides clear sun viewing; customers note easy fit and secure attachment
- ISO 12312-2 compliance
- secure, snug fit
- works with 8 SCT/EdgeHD telescopes
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9
SVBONY UHC Telescope Filter for CCD/DSLR
UHC filter designed for celestial observations and astrophotography with multilayer coatings to reduce light pollution. Some customers report mixed results on light pollution reduction and image quality
- low vignetting design
- broadband anti-reflection coating
- precision CNC aerometal construction
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10
Rollei Astroklar Light Pollution Round Filter I 105mm
Astroklar filter reduces artificial light pollution for night photography. Manufactured from optical glass with double-sided nano coating and anti-reflective, water, oil, and dirt-repellent properties. Customer insight mentions clarity and utility in night imaging
- light pollution reduction
- robust coating and repellents
- infrared-neutral performance