A guidescope is very important in long-exposure astrophotography to continuously compensate for periodic tracking errors of the mount.
The UltraGuide MKII from Artesky is a 60 mm guidescope with a focal length of 240 mm, providing a fast f/4 aperture ratio – ideal as a guide scope for medium or short focal length optics.
The 1.25" helical focuser allows you to use the UltraGuide MKII both as a high-quality finder and as a guide scope.
It is equipped with a T2 thread to allow connection to most cameras on the market.
The helical, rotatable focuser is the great strength of this guidescope, as it allows two types of focusing:
A less precise mode for quick overviews (search function) and a micro-fine adjustment for maximum precision once you have found a guide star.
The back focus offers a very comfortable focus position - both with high-quality eyepieces and with most guiding cameras on the market (e.g. QHY, ZWO, Omegon GUIDE, etc.).
Thanks to its rotatable focuser, the UltraGuide MKII 60mm always maintains the correct alignment of the camera used.
The camera does not rotate with it, and this feature is essential for correct use with autoguiding software (such as PHD).
The scope includes two 80 mm guide scope rings and three screws with nylon tips, as well as a short Vixen (GP-level) prism rail, which allows connection to most common finder scopes with a standard profile.
Alternatively, you can simply connect the entire set to a prism clamp and attach it to any Vixen or Losmandy rail.
