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For 1.25" or 31mm filters Easy to install on the telescope and the camera Filters are easy to ins...

For 1.25" or 31mm filters Easy to install on the telescope and the camera Filters are easy to ins...

Aperture of 107 mm Focal Length of 749mm Focal Ratio of f/7 Quadruplet APO Full Frame Imaging Circle Supported No need for flattener No need to ca...

Shortens the Focal Ratio of the FF107APO & FF130APO Focal Ratio shortened to f/4.9 Reduces th...

Aperture of 130 mm Focal Length of 1000mm Focal Ratio of f/7.7 Quadruplet APO ...

Shortens the Focal Ratio of the FF65APO Focal Ratio from f/6.4 to f/4.8 Reduces the Focal Length to 312mm Reduction Factor of 0.75x Standard 55mm ...

Quintuplet air-spaced APO F/6.4 416mm focal length 65mm aperture ...

Shortens the Focal Ratio of the FF80APO Focal Ratio from f/7.5 to f/5.7 Reduces the Focal Length ...

Quintuplet air-spaced APO High-quality ED glass Small and round stars Support full frame cameras 44mm image circle Description Specifications I...

The New filter Drawer for EOS Lens，26.5mm thickness is independently designed by ZWO and specifically made to match with ASI cooled cameras and EOS...

New filter Drawer with a thickness of 29mm that can be used for carrying 2” filter and connecting ASI cooled cameras to Nikon Lens.It is compatible...

Easily switch 2" mounted filters Eliminates light leaks Compatible with most 2" mounted filters Optical length of 21mm Description Specificatio...

Easily switch 2" mounted filters Eliminates light leaks Compatible with most 2" mounted filters Optical length of 20mm Description Specificatio...

Additionnal 2" filter holder for your ZWO M42 V2 filter drawer. It is not compatible with older filter drawers.

The new ZWO LRGB Filters are designed to approximately equalize the flux of ASI1600 mono sensorBetter transmission, Better coating, Better color...

7nm Bandpass for Precision Imaging Enhanced Nebula Imaging Light Pollution Suppression ...

7nm Bandpass for Precision Imaging Enhanced Nebula Imaging Light Pollution Suppression ...

7nm Bandpass for Precision Imaging Enhanced Nebula Imaging Light Pollution Suppression ...

Precise 7nm Bandpass Enhanced Contrast for Emission Nebulae Light Pollution Reduction ...

Tripod Weight of 2.3kg Load Capacity of 50kg Easy to Carry Stable Performance ...