Chroma LRGB Filter Set 1.25" (27101) — threaded rings Chroma's flagship LRGB set (27101) provides coordinated luminance, red, green and blue broadband filters for true-colour imaging with monochrome cameras. This version comes in 1.25-inch threaded rings for standard 1.25-inch filter wheels and accessories.
Manufacturer model: Chroma 27101 LRGB, 1.25-inch threaded ring · Specifications checked against manufacturer data on 2026-11-03
Chroma's flagship LRGB set (27101) provides coordinated luminance, red, green and blue broadband filters for true-colour imaging with monochrome cameras. This version comes in 1.25-inch threaded rings for standard 1.25-inch filter wheels and accessories.
Each filter is made on a single substrate of high-grade glass with very durable hard sputtered coatings, so no lamination is needed. The coatings withstand humidity and temperature extremes and are spectrally precise in centre wavelength and bandpass. The primary coating is on the front face and an anti-reflection coating on the back to prevent ghosting and maximise transmission.
| Chroma set number | 27101 LRGB |
|---|---|
| Filters in set | 27040 (L), 27041, 27042, 27043 (R, G, B) |
| Format | 1.25-inch threaded ring |
| Coating | Hard sputtered; AR-coated back face |
| Substrate | Single glass substrate, no lamination; 3 mm thick (Chroma astronomy brochure) |
| Recommended focal ratio | f/4 and slower (Chroma astronomy brochure) |
1.25-inch threaded-ring version of 27101. Ring thread pitch not stated on Chroma page.
| Set number | 27101 LRGB |
|---|---|
| Member filters | 27040; 27041; 27042; 27043 |
Data sheet
Chroma LRGB Filter Set 1.25" (27101) — threaded rings Chroma's flagship LRGB set (27101) provides coordinated luminance, red, green and blue broadband filters for true-colour imaging with monochrome cameras. This version comes in 1.25-inch threaded rings for standard 1.25-inch filter wheels and accessories.
Manufacturer model: Chroma 27101 LRGB, 1.25-inch threaded ring · Specifications checked against manufacturer data on 2026-11-03
