The NA (Neo-Achromatic) refractor features a two element secondary lens at the rear of the optical tube to provide a flatter field of view (Petzval design). Spherical abberation and field curvature are less than 1/3 to 1/5 of standard doublet refractors.
Pair this optical tube with the SPHINX equatorial mount. The STARBOOK controller have been intelligently engineered for high-speed automatic location of celestial objects.
The NA (Neo-Achromatic) refractor features a two element secondary lens at the rear of the optical tube to provide a flatter field of view (Petzval design). Spherical abberation and field curvature are less than 1/3 to 1/5 of standard doublet refractors. The Sphinx SXD incorporates one piece hardened steel RA and DEC shafts with needle bearings throughout, the new Sphinx D can handle a load capacity up to 50 lbs. The Sphinx D comes complete with PEC and the incredibly accurate SX Polar Finder Scope. The STAR BOOK controller provides you with built in star charts, upgradeable data base, and full color images.
Package includes NA140SSf with Dual Speed Focuser, Sphinx SXD Mount, Tripod, 7x50 Finder Scope, Bracket, Flip Mirror, and NLV25 Eyepiece.
