About Baader Baader, Clear Focusing 50.4mm Rnd Filter (3mm Thick, Optically Polished)
The Alpine Astronomical Baader Clear Focusing Filter can be used first to clearly focus the image before adding colored and specialty filters.
Baader Baader, Clear Focusing 50.4mm Rnd Filter (3mm Thick, Optically Polished) Features
- For Steeltrack NT Focusers 
- Full Wavelength Throughput 
- Unmounted for Versatile Use 
- Parfocal with Baader LRGB Filters 
- Allows for Sharp Focus Before Imaging 
- Anti-Reflection Fully Coated 
Warranty Information
This product has a limited warranty of 24 months for parts and 24 months for labor.