Maksutov Cassegrain NMC1900x152
152 > Eyepieces
HIOPTIC PLOSSL EYEPIECES
The telescope came supplied with a couple of eyepieces. These were
6.5mm and 20mm Plossls with fully coated
optics. They seemed very similar to Meade Plossls in weight and size
but the 20mm lacked any fringer grips and the coating used was a
blue rather than green. The edges are blackened to stop
reflections along the edges of the lenses. They came with handy
bolt cases to
keep them clean, however as with most of the items supplied in this
kit, they arrived having looked slightly used, in this case having
white hairs everywhere.
The lenses can be
broken down for cleaning. The rubber eye cup can be removed revealing a
that can be used for afocal camera mounts like the Scopetronix Digi-T.
that allow filters to be screwed into them. Unfortunately no filters
with this kit dispite being part of the manufactures specs.
TOO MUCH ZOOM!
One issue that cropped up during testing was that the supplied
eyepieces offer too much zoom. When combined with the 1900mm focal
length of this telescope the 20mm gives 95x zoom and the 6.5mm gives
zoom. Both require reasonable seeing conditions to gain focus. Not a
problem for a seasoned telescope users who understands about
things as atmospheric disturbance but telescope newbie may worry
that they have a duff scope on their hands and return it!
Hioptic made a mistake not providing a wider eyepiece than 20mm with
this scope. Most suppliers use a 26mm. A wider 40mm or 32mm eyepiece
should be next on any potential purchasers
shopping list so the can fit the complete moon in the eyepiece!