William Optics Gran Turismo 81 IV Triplet APO (A-F81GTIV)

William Optics Gran Turismo 81 IV Triplet APO (A-F81GTIV)The William Optics Gran Turismo 81 Imaging APO Telescope is a high quality Apochromatic Imaging optical telescope with an aperture of 81 mm and a focal length of 478 mm or an f ratio of f 5. 9, without the optional Reducer Flattener. If you wish to take great astro images with a high quality APO refractor, this William Optics Gran Turismo 81 Imaging APO telescope is a good way to obtain your goal. Its FPL 53 glass APO design provides images with

To maintain squareness to the optical axis while changing camera orientation

both adopt a triplet APO design

001%) which delivers an excellent SNR(signal to noise ratio) and effective cut-off rate to minimize interference from other wavelengths

Prism size: 12*12mm

EOS R Only fits Canon EOS-R Cameras Canon FF

Perfect for Visual Use or Beginning Astroimaging

Additional to the Deep-Sky RGB filters Astronomik now offers you three different Luminance filters

producing a remarkable 94% reflectivity

1920Lines 83FPS @8BIT 47FPS @16BIT

8oz (704g) Barrel Size 2

for advanced control of telescope via computer

4mm tube (TLD-1000)