The ZWO 16.5MM M48-M48 EXTENDER is useful to obtain a precise spacing when using a focal reducer or corrector that needs a certain chip-reducer spacing.
Specifications: Telescope side connection: M48x0.75 male Camera side connection: M48x0.75 female Backfocus: 16.5mm
OAG-L has a large prism size of 12*12mm, far bigger than M68 OAG. The bigger clear aperture brings wider field of view in guiding. It is easy to use, and suitable for users who are interested in long focal length photography.
To take the most advantage of it, we recommend you to match it with large format guiding cameras.
Can be use to mount telescopes or spotting scopes to tripod head
Made of extruded, anodized aluminum. After anodizing treatment, an electrically insulating coating is formed on the surface to maintain the smoothness of the metal for a comfortable feel
1/4-inch standard screw thread fits almost all telescopes
Length of dovetail mounting plate is 210mm
Compatible with F9144C dovetail clamp, sold separately
It is designed for light pollution suppression for OSC and Mono cameras. The spectral design selected the most substantial information in the RGB bands, which makes Antlia Triband RGB Ultra Filter possible to shoot over 90% of deep sky objects, in addition to its excellent performance on emission nebula, different from other ultra-narrowband filters, it is able to capture galaxies, reflection nebulae, and star clusters from a Bortle 8 location to Bortle 1 while presenting more balanced RGB colors in your images. Also, it has a broad bandpass designed to cope with faster optics up to the f/2 focal ratio.
Excellent Ha filter, installed it in a ZWO filter wheel and tried it on the evening just after receiving it and got great captures of the Dumbbell planetary nebula, very sharp and detailed. Thanks to Thaiexcite who shipped it quickly, so I was able to use it on that clear sky night!