BAADER CMOS O-III NARROWBAND FILTER ROWAN-IP The large rack and pinion

The large rack and pinion 4" focuser can be rotated 360°and it has a reduction gear of 1:10 for precise focusing

GIOTTO manual  PLAY software

carbon fiber and brass for long lasting

Vixen dovetail bar

Optical thickness of this adapter is 9mm

BAADER CMOS O-III NARROWBAND FILTER ROWAN-IP The large rack and pinionThe new Baader CMOS optimized O III 4nm 6. 5nm filter is a precision grade ultra narrowband filter with a high transmission at the Oxygen III line at 500. 7nm. It is designed to work very well with modern highly sensitive astronomy cameras and telescopes with focal ratios between f 15 to f 3. 4. The ultra narrow 4nm bandpass make these ideal for imaging under light polluted skies. The 6. 5nm versions are recommended for most cases where there is not a