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美国美得(Meade)8''LX200ACF

  • 本店售价:¥36800元 ¥44160元
  • 商品货号:ECS000424
  • 商品库存: 999 台
  • 商品品牌:美德MEADE
  • 商品重量:0克
  • 上架时间:2010-04-03
  • 商品点击数:3196
  • 购买数量: 商品总价:

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美国美得(Meade)8''LX200ACF天文望远镜

 
 
The most widely used research telescope on earth now comes with the most advanced optical system. Meade's LX200-ACF brings Advanced Coma-Free (ACF) optics within reach of aspiring astronomers everywhere. Nearly every observatory reflector in the world uses an aplanatic (coma-free) optical system like the Ritchey-Chrétien (RC), including NASA's Hubble Space Telescope. Now you can own similar optics to what the professionals use. The LX200-ACF includes all the field-proven features of the LX200 including GPS, Primary Mirror Lock, Zero Image-Shift Microfocuser, Oversized Primary Mirror, SmartDrive™;, Smart Mount™, AutoStar® II and more. Plus, the LX200-ACF comes with observatory-class optics and a Series 5000 26mm 5-Element Plössl eyepiece. The new LX200-ACF. It's the biggest news in astronomy since, well, the LX200.

The "advanced" in Advanced Coma-Free.
A traditional Ritchey-Chrétien (RC) is a type of reflector that delivers a coma-free, flat field of view via hyperbolic primary and secondary mirrors. RC telescopes (from a variety of manufacturers) are found in most of the world's top observatories and NASA's Hubble Space Telescope. Because the mirrors in these telescopes have always been very expensive to make, few amateur astronomers could enjoy them. Fortunately, Meade engineers developed a radical new Advanced Coma Free design by combining a hyperbolic secondary mirror with a corrector-lens-and-spherical-primary-mirror combination that performs as one hyperbolic element. This ACF design produces a coma-free, flat field of view that rivals traditional RC telescopes at a fraction of the cost. The design even eliminates diffraction spikes and improves astigmatism, both of which are inherent in the traditional RC design. When reviewing Meade's LX400-ACF Advanced Coma Free, Sky and Telescope magazine said, " [It] does indeed perform like a [Ritchey-Chrétien]. The difference between the off-axis images (compared to a Schmidt-Cassegrain) was dramatic to say the least."
 
 
 

f/10 Advanced Coma-Free Optics:Building from a classic RC design, Meade has created a new design with the same coma-free pinpoint star images and flatter field that discerning astrophotographers and most professional observatories have come to expect from classic Ritchey-Chrétien optics. Meade's Advanced Coma-Free system also reduces the astigmatism and eliminates diffractions spikes found in classical RCs. The LX200-ACF is the perfect platform for the demanding researcher and imaging enthusiast with telescopes available in apertures of 8 inches, 10 inches, 12 inches, and 16 inches.

Meade Ultra-High Transmission Coatings (UHTC™)increases total light tran+smission and image brightness by nearly 20% over Meade's standard coatings. Objects such as stars, galaxies and nebulae will appear significantly brighter.

Zero Image-Shift Microfocuserallows you to obtain precise image focus with no image movement.

Primary Mirror Locklocks the mirror in place during long-exposure astrophotography.

Oversize Primary Mirrordiameters are greater than their listed aperture (e.g., the diameter of the 8" LX200-ACF is actually 8.25"). This additional 1/4" yields a wide, fully illuminated field-of-view.

Smart Mount™constantly refines pointing accuracy each time an object is centered and updated. Compatible with both equatorial and altazimuth mounts.

 

Coma Killer - What is coma?It's not some sort of astronomical state of unconsciousness. It's an optical aberration. Precisely defined, coma is a distortion in which the image of a star cannot be focused to a point, but takes on the shape of a comet.
[more about coma killer]

Smart Drive™
provides permanent periodic error correction (PPEC) on both axes by learning and averaging error over the course of one or more training periods, thereby minimizing guiding corrections during long-exposure photographs. PPEC is available on both axes and functions in both polar and altazimuth modes.

Sony®GPS Receiver Sensorautomatically inputs precise time, date, and geographical location to help quickly and precisely align the telescope.

AutoAlign™- Telescopes with Meade's new AutoAlign come pre-aligned.They are smart scopes that know the night sky right out of the box. AutoAlign picks two fail-proof alignment stars for you and places them right in your view-finder. Just center to fine tune your alignment and the wonders of the universe are at your fingertips.

AutoStar® IIcontroller features "Hot Keys" for quick access to a 145,000 celestial object database. AutoStar II can be updated with the latest software upgrades, guided tours and timely objects like comets free at meade.com.

Specifications 8" 10" 12" 14" 16"
Optical Design Advanced Coma Free Advanced Coma Free Advanced Coma Free Advanced Coma Free Advanced Coma Free
Clear Aperture 203mm (8") 254mm (10") 305mm (12") 356mm(14") 406.4mm (16")
Focal Length Focal Ratio 2000mm f/10(8") 2500mm f/10 (10") 3048mm f/10 (12") 3556mm f/10 (14") 4064mm f/10
Maximum Practical Visual Power 600X (8") 650X (10") 750X (12") 850X (14") 950X (16")
Telescope Mounting heavy-duty fork type; double-tine heavy-duty fork type; double-tine heavy-duty fork type; double-tine heavy-duty fork type; double-tine heavy-duty fork type; double-tine
Primary Mirror Lock included (progressive tension) All models
Zero Image-Shift Microfocuser included (4-speed) All models
Eyepiece Series 5000 26mm 5-Element Plossl Series 5000 26mm 5-Element Plossl Series 5000 26mm 5-Element Plossl Series 5000 26mm 5-Element Plossl Series 5000 26mm 5-Element Plossl
Viewfinder 8 x 50mm 8 x 50mm 8 x 50mm 8 x 50mm 8 x 50mm
GPS, True-level and North sensors included (16-channel GPS receiver) All models
Pointing Precision, High Precision Mode 1-arc min. All models
Autostar® II Hand Controller included (147,541 object database) All models
Batteries (user-supplied) 8 x C-cells 8 x C-cells 8 x C-cells 8 x C-cells none
Battery Life (approx.) 20 hrs 20 hrs 20 hrs 20 hrs n/a
Slew Speed: RA and Dec: 0.01x to 1.0x sidereal, variable in 0.01x increments; 2x, 8x, 16x, 64x, 128x sidereal; 1°/sec. to 8°/sec., variable in 0.1° increments All models
Tracking Rates sidereal, lunar, or custom-selected from 2000 incremental rates All models
Primary, Secondary Mirrors Pyrex® glass Pyrex® glass Pyrex® glass Pyrex® glass Pyrex® glass grade-A,
Correcting Plate/Lens water white glass water white glass water white glass water white glass water white glass
Total Net Telescope Weight 73 lbs. 90 lbs. 125 lbs. 166 lbs. 318 lbs. (with Field Tripod)
Telescope Shipping Weight (approx.) 94 lbs. 122 lbs. 165 lbs. 225 lbs. 360 lbs.
Field Tripod Height all models: 30" to 44" variable 30" to 44" variable 40" to 50" variable 40" to 50" variable 40" to 50" variable
UHTC Included Included Included Included Included


光学设计:改进型 Advanced Coma Free
口径:203mm (8")
焦距/焦比:2000mm f/10(8")
最大有效倍率:600X (8")
架台:双超稳叉臂
主镜锁:全部包括
零漂移微聚焦器:全部包括(四速)
目镜:5000系列 26mm 5片式普洛素
寻星镜:8 x 50mm
GPS,真水平/北传感器:全部包括 (16通道GPS 接收机)
定位经度, 高精度模式:1-角秒. 全部型号
Autostar® II 手控器:全部型号 (147,541个 天体数据库)
电池(自备):8节1号电池
电池使用时间:20 小时
马达速度:经赤纬: 0.01x to1.0x 恒星时, .01x 增量; 2x, 8x, 16x, 64x, 128x 恒星时; 1°/sec. to 8°/sec., 0.1°增量 (全部型号均包括)
跟踪速率:恒星时, 月亮时, 或用户从2000增量自定义(全部型号)
主镜/副镜材质:Pyrex玻璃
改正镜:水白玻璃
整机净重:33公斤
整机毛重(带包装):42公斤
三角架长度:76-112cm可变

LX200R 地球上使用最广泛的科研望远镜如今受到最先进的空间光学系统的影响。Meade最新的LX200R望远镜为世界各地的天文爱好者带来了先进的R-C光学系统。世界上几乎所有的天文台都使用R-C系统的反射镜,包括NASA的哈勃太空望远镜。现在你可以迈向专业领域了。LX200R包含前一代LX200系列的所有功能,包括GPS定位,主镜锁,无影像抖动微型聚焦器,超大口径的主镜,智能驱动,智能镜座,AutostarⅡ等。另外,LX200R的光学镜片生产于加利福尼亚,附带一只5片结构的5000系列PL目镜。最新的LX200R系列是自LX200系列发布以来天文界最大的喜讯!

先进的f/10 R-C光学系统:R-C光学设计在专业的天文摄影家中知名度很高,而且是世界上大型天文台望远镜的首选光学系统。LX200R对于要求苛刻的观测者和热心的摄影者来说是个完美的工作平台,望远镜的口径有8",10",12",14"和16"。

Meade超高透光率镀膜(UHTC):相对于Meade的标准镀膜,透光率和亮度差不多都提高了20!%。诸如恒星、星云、星系之类的天体都会变得更加明亮。

无影像抖动微型对焦器:允许你在没有图像抖动的情况下获得精确的聚焦。

主镜锁:在长时间曝光中锁定主镜的位置。

超大的主镜:实际直径要大于标示的数值(例如:直径8"的LX200R实际直径是8.25" )。这额外的1/4" 直径全面增加了视场的亮度。

智能镜座:每次当一个天体被瞄准和校正后,便不断地细化指向准确度。无论是赤道式还是地平式都可以使用。

智能驱动:通过一次或多次训练阶段来学习和平衡错误,在双轴上提供长周期错误校正(PPEC),以便减少长时间曝光中的导星错误。在两个轴上以及赤道/地平模式中都能提供PPEC功能。

索尼公司的GPS接收器:自动输入精确的时间、日期和地理的位置以便快速精确的校正望远镜。

自动校正:Meade的自动校正望远镜有预先校正功能。这些望远镜对外界的星空了如指掌。自动校正为您选择两颗校准星并放在您的寻星镜视场中。将它们调整到校正器中央,宇宙的奥秘尽在您的指掌。

AutostarⅡ:控制器有一个“热键”可以快速进入包含145000多颗天体的数据库。AutostarⅡ能用最新的升级软件更新,导航信息和实时的天体信息如彗星,都可以在Meade的网站获取。

美国制造:所有的LX200R望远镜都是在Meade位于美国加利福尼亚的设计与制造中心生产。

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