Description
Celestron combined their smallest EdgeHD optical tube with a light, but steady, mount and tripod to give you a complete observation platform you can easily take to remote locations: the EdgeHD CGE 8" f/10 Aplanatic Schmidt-Cassegrain GoTo EQ Telescope. Included in this kit are the 8" EdgeHD optical tube, with a 90 diagonal and 40mm eyepiece, and the Advanced VX motorized equatorial mount, with a NextStar hand controller that has a database of over 40,000 objects and Sky Tour mode as well as a solid 2" stainless steel tripod.Optical Tube 8" (203.2mm) aperturef/10 focal ratio2032mm effective focal lengthAplanatic Schmidt-Cassegrain optical designEdgeHD field-flattener aplanatic design eliminates spherical aberration, field curvature, and off-axis star coma to improve resolution, sharpness, and clarity across the entire field of view, especially at the edgesDiffraction-limited SCHOTT glass reduces internal light loss to improve color, clarity, and sharpnessStarBright XLT optical coatingsFlexible tension clutches hold the primary mirror in place to reduce image shift without putting any force or pressure on the mirror assembly, keeping subjects centeredInternal mirror locks prevent accidental adjustment to focus important during long-exposure astrophotographyIntegrated 95-micron mesh filter allows hot air to be released from behind the primary mirror without dust getting in, to prevent mirror distortion due to uneven surface temperaturesResolution: 0.69 arcsec (Rayleigh); 0.57 arcsec (Dawes)Secondary mirror obstruction: 2.7" (69mm); 34% by diameter; 11% by areaStarBright XLT System Maximizes light transmission through optical pathImproves color rendition, contrast, sharpness, resolution, and brightnessBroadband system provides flat wavelength transmission across the entire visual spectrumMulti-layer mirror coatings with layers of aluminum, SiO2 (quartz), and TiO2 (titanium dioxide)Multi-layer anti-reflective corrector plate coatings with layers of MgF2 (magnesium fluoride) and HfO2 (hafnium dioxide); hafnium has a wider band-pass than the commonly used titaniumHigh-transmission water white glass corrector plate limits light loss due to internal absorptionMounting OTA only; mount and tripod required for proper useLarge CGE (Losmandy-style) dovetail plateIncluded Accessories Visual Back:Standard Schmidt-Cassegrain telescope (SCT) threads1.25" eyepiece/accessory holderUse for prime focus or projection astrophotography with optional adaptersEyepiece:Pl ssl lens configuration1.25"-diameter barrelAccepts most 1.25" eyepiece filters40mm focal length yields 51x powerDiagonal:90 angle puts head in comfortable viewing positionThreaded for direct connection to OTA without the need for the visual back1.25" eyepiece/accessory holderStar diagonal corrects image horizontally, but not verticallyFinderscope:Low 9x magnification preserves wide field of view to more easily find alignment or guide starsLarge 50mm aperture helps to see dimmer objects and stars for easier star-hopping navigation