Four-inch refractors engross the astronomic sweetly mark for yard Galileos: boastfully plenty to prepare expectant detail, size plenty to set up on simple, non-motorized mounts. The SV102ED2 uses low-dispersion glass in its two-element lens to minimize color aberrations that can cause annoying halos around luminous objects. Views are bright and crisp, with plenty of detail.
Every unit is personally inspected and tested by either company founder Vic Maris or his senior technician. If you want to save a few hundred bucks, you can skip the two-speed focuser — Stellarvue's standard unit is also very smooth.
Lens shield snags when extended or retracted. Logo is a slapped-on decal instead of being painted on — petty gripe, but it diminishes an otherwise marvelous rig.