OPTIQUES FULLUM FOLDED NEWTONIAN 30" f/3.5 case - Periodic error: it is

- Periodic error: it is caused by the eccentricity of the worm gear in right ascension which has to turn constantly in order to compensate the Earth's rotation

which allows you to mount it to the bottom of any standard Vixen or Losmandy-style dovetail bar

the use of a Barlow lens is recommended

A deformation like this can be easily caused just by moving around the barycenter of a non-perfectly balanced telescope

especially for astrophotography with short focal length lenses

OPTIQUES FULLUM FOLDED NEWTONIAN 30" f/3.5 case - Periodic error: it isAs these are custom made systems, please contact us to discuss your requirements. Testar Australia is proud to partner with Optiques Fullum to offer the full range of large Fullum folded Newtonians for the discerning astronomer who demands exceptional quality, ease of use and extreme apertures. Fullum folded Newtonian telescope systems are designed, engineered and manufactured in house by Optiques Fullum and are available with mirrors up to 65" (165