Astronomik UHC Filter
Best contrast enhancer for Schmidt-Cassegrain telescope owners.
This filter is the ultimate shortcut for SCT owners looking to cut through light pollution and sharpen deep-sky contrast. You sacrifice a bit of natural color fidelity for a massive gain in structural detail, making it an essential tool for serious visual observers.
$139.95
at
Telescopes.net
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Who it's for
- Urban astronomers observing nebulae under heavy light pollution
- SCT owners seeking a seamless, vignette-free optical setup
- Serious observers requiring durable, parfocal equipment for efficient sessions
Who should skip it
- Observers interested in galaxies, star clusters, and broadband objects
- Budget-conscious hobbyists preferring standard, lower-cost eyepiece filters
- Astrophotographers with tight back focus requirements for imaging trains
Performance breakdown
Contrast Enhancement
Significantly darkens the background sky to make deep-sky objects pop.
Transmission Efficiency
High-performance light throughput ensures minimal signal loss during long observations.
Build Durability
Premium optical glass construction withstands years of rigorous field use.
SCT Integration
Designed specifically for rear cells to ensure a perfect, secure fit.
Nebula Detail
Excellent H-alpha transmission reveals intricate structures in emission nebulae.
Long-term Reliability
A decade-long warranty provides total peace of mind for serious astronomers.
Key Specs
Filter Type
UHC (Ultra High Contrast)
Peak Transmission
96% H alpha
Material
Optical Glass
Compatibility
SCT Rear Cell
Connection Interface
SCT Thread
Accessory Type
Filter
Telescope Compatibility
Schmidt-Cassegrain
Shape
Round
Warranty
10 Year
Know before you buy
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