Celestron CGEM II 800 EdgeHD Telescope 8in. 25" mirror diagonal for more comfortable viewing and 1.25" 40 mm Pl ssl eyepiece are all included EdgeHD FEATURES EdgeHD aplanatic flat field SCT optics for pinpoint stars to the edge of the largest imaging sensors and widest eyepieces. Lightweight and portable Aluminum optical tube with tube vents featuring an integrated 95-micron mesh filter allows hot air to be released from behind the primary mirror. Mirror support knobs hold the mirror in place and reduce image shift during imaging Versatile design accommodates 3 focal ratios: native f/10 f/7 with the addition of a focal reducer or ultra-fast f/2 imaging with a removable secondary mirror and third-party accessories COMPUTERIZED MOUNT FEATURES 40 lbs payload capacity Dual-fit Vixen/CG-5 and Losmandy/CGE dovetail saddle 2" steel legs with height index marks for quick leveling USB 2.0 port on hand control for direct links to a PC via ASCOM supported software. 40000 object database with over 100 user-definable objects and expanded information on over 200 objects Internal cabling throughout for worry-free remote operation Low cog DC Servo motor with integrated optical encoders offer smooth quiet operation Able to track past the meridian allowing seamless imaging Permanent periodic error corrections allow users to train out the worm gears periodic errors once while the mount retains the PEC recordings. Software Features include: Mount Calibration Database Filter Limits Hibernate five Alignment Procedures and user-defined slew limits Built-in polar alignment program to polar align on any star in the sky Longer clutch levers to make tightening and loosening of clutches easier Custom database lists of all the most famous deep-sky objects by name and catalog number Solar System alignment method allows to view the moon and planets during the day Permanent Programmable Periodic Error Correction (PEC) corrects periodic tracking errors inherent to all worm drives Custom Rate 9 feature allows to set maximum slew rate Tandem mode allows to star align the mount even when positioned for tandem scope use RS-232 communication port on hand control to control the telescope via a personal computer Includes NexRemote telescope control software for advanced control of telescope via computer Precision machined 40 mm diameter steel Polar shafts supported by multiple tapered roller bearings and ball bearings GPS-compatible with optional SkySync GPS Accessory Specifications for Celestron CGEM II EdgeHD Telescope: Manufacturer: Celestron Magnification Type: Variable Package Contents: Celestron CGEM II EdgeHD Telescope Celestron 12017: CGEM II 800 EdgeHD Telescope 8in
