Chroma LRGB Filter Set 36 mm (27101) — unmounted Chroma's flagship LRGB set (27101) provides coordinated luminance, red, green and blue broadband filters for true-colour imaging with monochrome cameras. The four hard-sputtered filters deliver high transmission and strong out-of-band blocking for galaxies, nebulae and star clusters.
Manufacturer model: Chroma 27101 LRGB, 36 mm unmounted · 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. The four hard-sputtered filters deliver high transmission and strong out-of-band blocking for galaxies, nebulae and star clusters.
Chroma sputtered coatings
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 filter coating is on the front face and an anti-reflection coating on the back to prevent ghosting and maximise transmission. Chroma tests its sputtered filters to relevant ISO and MIL environmental and durability specifications.
Specifications
Chroma set number
27101 LRGB
Filters in set
27040 (L), 27041, 27042, 27043 (R, G, B)
Format
36 mm diameter, unmounted
Coating
Hard sputtered; AR-coated back face
Substrate
Single glass substrate, no lamination; 3 mm thick (Chroma astronomy brochure)
36 mm unmounted; needs a filter wheel/holder for 36 mm unmounted filters. Not the HaLRGB/Ha3LRGB/Ha5LRGB sets. Passband figures for 27040–27043 not on the set page.
Additional specifications
Set number
27101 LRGB
Member filters
27040; 27041; 27042; 27043
70691
Technische Daten
Vergütung
Hard sputtered, front primary coating, AR back
Format
36 mm diameter, unmounted
Empfohlenes min. Öffnungsverhältnis
f/4
Substrat
Single substrate, no lamination
Dicke (mm)
3
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Chroma LRGB Filter Set 36 mm (27101) — unmounted Chroma's flagship LRGB set (27101) provides coordinated luminance, red, green and blue broadband filters for true-colour imaging with monochrome cameras. The four hard-sputtered filters deliver high transmission and strong out-of-band blocking for galaxies, nebulae and star clusters.
Manufacturer model: Chroma 27101 LRGB, 36 mm unmounted · Specifications checked against manufacturer data on 2026-11-03
