Current Price: $2799.00
Buy It Now Price: $2799.00
Bids: 0

Celestron EdgeHD 11" f/10 Aplanatic Schmidt-Cassegrain Telescope (OTA Only)  MODEL: 91050-XLT

  • 11" (280mm) aperture
  • f/10 focal ratio
  • 2800mm effective focal length
  • Aplanatic Schmidt-Cassegrain optical design
  • EdgeHD 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 edges
  • Diffraction-limited SCHOTT glass reduces internal light loss to improve color, clarity, and sharpness
  • StarBright XLT optical coatings
  • Flexible tension clutches hold the primary mirror in place to reduce image shift without putting any force or pressure on the mirror assembly, keeping subjects centered
  • Internal mirror locks prevent accidental adjustment to focus—important during long-exposure astrophotography
  • Integrated 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 temperatures
  • Resolution: 0.5 arcsec (Rayleigh); 0.42 arcsec (Dawes)
  • Secondary mirror obstruction: 3.75" (95 mm); 34% by diameter; 12% by area
  • STARBRIGHT XLT SYSTEM 
  • Maximizes light transmission through optical path
  • Improves color rendition, contrast, sharpness, resolution, and brightness
  • Broadband system provides flat wavelength transmission across the entire visual spectrum
  • Multi-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 titanium
  • High-transmission water white glass corrector plate limits light loss due to internal absorption

Adaption for mounting:

  • OTA only; mount and tripod required for proper use
  • Large CGE (Losmandy-style) dovetail plate

Accessories included: 

Visual Back:

  • Standard Schmidt-Cassegrain telescope (SCT) threads
  • 2" eyepiece/accessory holder
  • Use for prime focus or projection astrophotography with extra accessories 

Eyepiece:

  • Luminos-series wide-angle
  • 82° field of view
  • 2"-diameter barrel
  • Accepts most brands of 2" eyepiece filters
  • 23mm focal length yields 122x  power
  • Parfocal with all Luminos eyepieces, allowing it to be changed out with other Luminos eyepieces without having to adjust the focus
  • Retractable eyecup for use with or without eyewear

Reducer adapter:

  • 2"-to-1.25" reducer adapter allows the use of smaller eyepieces and accessories in visual back or diagonal

Diagonal:

  • 90° angle puts head in comfortable viewing position
  • Threaded for direct connection to OTA without the need for the visual back
  • 2" eyepiece/accessory holder
  • Star diagonal corrects image horizontally, but not vertically

Finderscope:

  • Low 9x magnification preserves wide field of view to more easily find alignment or guide stars
  • Large 50mm aperture helps to see dimmer objects and starS

THIS IS A NEW TELESCOPE.  OPEN BOX WITH ALL STANDARD ACCESSORIES. 
We are a reputable, established Ebay seller for over 10 years.  We guarantee the item is exactly as described in this listing.All pictures are of the actual product. 

Tagged with:

Filed under: High-End Telescope Auctions (USA)