WILLIAM OPTICS GUIDESTAR 61 F/5.9 APO Color:Gold 5 arc seconds

5 arc seconds

the Veloce Series has a fixed focal position versus temperature shift during imaging sessions

-11C sensor temperature

keeping all eyepieces used with the 3x Barlow in like-new condition

Various functions are provided by the 10Micron firmware: even the number of turns you must apply to the adjustment handles for the azimuth and altitude is given

WILLIAM OPTICS GUIDESTAR 61 F/5.9 APO Color:Gold 5 arc secondsThe William Optics GuideStar 61 is an apochromatic guide scope with a focal ratio of f 5. 9 and a focal length of 360mm. Utilizing FPL 53 synthetic fluorite glass, the GuideStar 61 provides excellent aberration correction. The GuideStar 61 is compatible with QHY, Touptek ZWO and many other guide cameras (Note: some guide cameras may require an extra 2" extension tube to reach focus). The locking dew shield focuser allows you to easily reach the