Baader Planetarium U Filter
Best specialized optical tool for dedicated planetary imaging enthusiasts.
A specialized tool for capturing the invisible, this filter opens up the deep ultraviolet spectrum for both planetary astronomy and creative terrestrial photography. It delivers high transmission and precise blocking, making it an essential choice for those looking to document details typically hidden from standard sensors.
$332.00
at
Telescopes.net
Who it's for
- Astrophotographers seeking maximum light throughput for faint ultraviolet signals
- Serious planetary imagers requiring high-contrast results without spectral contamination
- Planetary observers dedicated to documenting the complex atmosphere of Venus
Who should skip it
- Budget-conscious hobbyists looking for a more affordable entry into astrophotography
- Users without stable mounts or high-sensitivity monochrome cameras
- Beginners using standard glass refractors that naturally block ultraviolet light
Performance breakdown
UV Transmission Efficiency
Peak transmission levels deliver exceptional clarity for deep ultraviolet imaging.
Spectral Blocking Precision
Aggressive blocking of unwanted wavelengths ensures minimal light pollution and noise.
Coating Durability
The 20-layer dielectric stack resists degradation under demanding field conditions.
Venus Cloud Contrast
Specifically engineered to reveal subtle atmospheric structures on Venus with ease.
Versatility
Adapts seamlessly from planetary astronomy to specialized forensic and floral photography.
Build Quality
German-engineered construction provides a robust, reliable fit for standard mounts.
Key Specs
Filter Size
1.25 inches
Filter Type
Ultraviolet
Transmission Range
300nm - 400nm
Peak Transmission
80%
Blocking Range
200nm - 1500nm
Substrate
UG-11
Coating
20-layer dielectric
Mounting
M28.5x0.6 thread
Country of Origin
Germany
Warranty
2 years
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