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Optec Gemini Focusing Rotator Optec Gemini Focusing Rotator New Design Concept: Optec engineers have developed a completely new concept for combin...

Chroma Bessel UBVRI Filter Set U-Bessel: UV photometric filter in UVBRI seriesV-Bessel: Green (Visible) photometric filter in UVBRI seriesB-Bessel:...

Chroma HaLRGB Filter Set The Chroma HaLRGB Filter Set includes five individual filters: 8nm H-alpha, luminance, red, green and blue. They are avail...

Chroma 8nm OIII Filter The Chroma 8nm OIII Filter isolates the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the n...

Chroma 5nm OIII Filter The Chroma 5nm OIII Filter isolates the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the n...

Chroma 8nm SII Filter The Chroma 8nm SII Filter isolates the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is ...

Chroma 5nm SII Filter The Chroma 5nm SII Filter isolates the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is ...

Chroma 5nm H-beta Filter H-beta filters are also useful for imaging nebulae and objects rich in ionized hydrogen. At 486.1nm, a narrow-band filter...

Chroma 3nm H-Beta Filter H-beta filters are also useful for imaging nebulae and objects rich in ionized hydrogen. At 486.1nm, a narrow-band filter...

Chroma 8nm H-alpha Filter The Chroma 8nm H-alpha Filter is essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 6...