Altair Ha Oiii DualBand ULTRA 4nm CERTIFIED CMOS Filter 2" (Pre-owned) SII/OIII Dual Filter air-spaced lenses with 1 ED

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

Interface: USB2

ASI2600MC/MM Duo’s max FPS in RAW 8 mode at full resolution is 15FPS

Telescope in photo is shown with an OPTIONAL LUNT ZOOM EYEPIECE

With its light but very rigid frame

Altair Ha Oiii DualBand ULTRA 4nm CERTIFIED CMOS Filter 2" (Pre-owned) SII/OIII Dual Filter air-spaced lenses with 1 EDUsed 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