Altair Ha Oiii DualBand ULTRA 4nm CERTIFIED CMOS Filter 2" (Pre-owned) SII/OIII Dual Filter H-alpha filter is the first

H-alpha filter is the first narrowband addition to LRGB set for most imagers who blend a black-and-white Ha image into RGB data to enhance structural detail while maintaining natural look

Celestron’s award-winning Nature DX binoculars get a major upgrade with the addition of ED objective lenses

The Sony IMX294 is a CMOS image sensor with a monochrome square pixel array of approximately 47

air-spaced lenses with 1 ED element Minor Axis: 70 mm Image Circle: 44 mm Tube Material: Aluminum Tube Diameter: 193 mm Tube Length: 443 mm Weight: 4

Altair Ha Oiii DualBand ULTRA 4nm CERTIFIED CMOS Filter 2" (Pre-owned) SII/OIII Dual Filter H-alpha filter is the firstUsed filter, in great condition! The Altair Dual Band ULTRA Ha Oiii nebula filter comes with a high resolution spectrographic test report. Designed for imaging in extreme light pollution, E. g. in a major city, with a colour CMOS camera. This filter transmits only the H and Oiii light from emission nebulae, with almost total suppression of unwanted light, with OD6 (0. 0001%) over the majority of unwanted visual wavelengths* for ultimate contrast. USA