
The American company Chroma Technology Corp., based in Vermont, produces high-quality, custom-fit astronomy filters, which are manufactured with hard coatings of individual substrates made of best quality glass, with no need for lamination. All primary filter coatings on the front side, as well as additional anti-reflection coatings on the back of the filters, prevent ghosting and guarantee maximum transmission. These filters’ bandpass remains stable in their spectral range and are unchanged even when exposed to extreme temperature fluctuations or changes in humidity. All filters can also be used with fast apertures of f/4 or smaller. Chroma also offers customised coatings for more demanding applications, optimised for even faster apertures such as f/3 or f/2. On request, other filter sizes and unique passbands can also be made to order.

Chroma
Filters OIII 31mm ungefasst (3nm)
$ 1,050.00

Chroma
Filters LoGlow Light Pollution 1.25"
$ 530.00

Chroma
Filters H-Alpha 1,25", 8nm
$ 530.00

Chroma
Filters H-Alpha 1,25", 3nm
$ 1,050.00

Chroma
Filters LoGlow Light Pollution 2"
$ 940.00

Chroma
Filters LRGB-Set 2"
$ 3,170.00

Chroma
Filters OIII 36mm ungefasst, 3nm
$ 900.00

Chroma
Filters Filter SII 36mm ungefasst, 3nm
$ 900.00

Chroma
Filters H-Alpha 3nm 2"
$ 1,770.00

Chroma
Filters H-Alpha 5nm 2"
$ 1,620.00

Chroma
Filters SII 3nm 2"
$ 1,780.00

Chroma
Filters H-Alpha 8nm 2"
$ 930.00

Chroma
Filters SII 5nm 2"
$ 1,630.00

Chroma
Filters OIII 8nm 2"
$ 930.00

Chroma
Filters OIII 5nm 2"
$ 1,630.00

Chroma
Filters OIII 3nm 2"
$ 1,780.00

Chroma
Filters SII 8nm 2"
$ 930.00

Chroma
Filters LoGlow Light Pollution 36mm
$ 419.00

Chroma
Filters LRGB Set 36mm
$ 940.00

Chroma
Filters Filter H-Alpha 36mm ungefasst, 3nm
$ 900.00

Chroma
Filters Sloan-i 50x50 Square SDSS Unmounted
$ 1,370.00

Chroma
Filters U-Bessel 1,25"
$ 570.00

Chroma
Filters U-Bessel 2"
$ 1,270.00

Chroma
Filters Clear Filter 36mm ungefasst, 3nm
$ 211.00

Chroma
Filters H-Alpha 1,25", 5nm
$ 860.00

Chroma
Filters OIII 1,25", 3nm
$ 1,040.00

Chroma
Filters LRGB-Set 1,25"
$ 1,060.00
