Astrodon 1.25" Gen2 I-Series LRGB Filter Set – Mounted

The Astrodon Gen2 I-Series 1.25" Mounted LRGB Filter Set is optimized for Kodak/Interline CCD detectors, balancing the flux response across Red, Green, and Blue channels.

Designed for equal exposure times across all RGB channels (~1:1:1), this filter set minimizes star halos, improves color separation, and enhances galaxy imaging. Durable sputtered coatings ensure long-lasting performance, while parfocal alignment with Astrodon narrowband filters simplifies imaging workflow. Proudly Made in the USA.

• Set includes: Luminance (NIR/UV-blocked), Red, Green, Blue
• 1.25" mounted filters (31mm, 49.7mm dia.)
• Balanced RGB weights for equal exposure times
• Improved color separation & rendition for galaxies
• Reduces reflections and star halos
• Spectral gap between red & green reduces light pollution impact
• High-efficiency blue filter with reduced UV
• OIII signal >97% in blue & green → correct teal planetary nebula color
• Parfocal with Astrodon narrowband filters
• Ultra-hard durable sputtered coatings to the filter edge
• Made in USA with 5-year warranty

• Filter Size: 1.25" mounted
• Substrate: 3 ±0.025 mm fused silica (1/4 wave)
• Parallelism: 30 arcsec
• Shape: Round
• Weight: ~0.25 lbs (113 g)
• UPC: 791512981047
• Brand: Astrodon
• Warranty: 5 years