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Meade 8" S-C LXD75, S-N 6", 8" 10" LXD75 Schmidt-Cassegrain & Schmidt-Newtonian telescope
Meade 8" S-C LXD75, S-N 6", 8" 10" LXD75 史密特-卡塞格林 [折反射式]史密特-牛頓(Schmidt-Newtonian) 望遠鏡
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凡購買天文儀器滿港幣8000 元或Meade 套裝 天文望遠鏡,可免費獲得一次由

天文匯派員到貴校提供儀器使用課程。

詳情可電郵 本公司 或致電 96383899查詢


www.astronomy.idv.hk
香港最高人氣的 GOTO電腦赤道儀

Star party, 路邊 天 文,觀星營必定見到 !

Q: 為何LXD75成為香港最多人使用 的赤道儀 !
A: 簡單易用,優良質素,價格合理


Q:
除目視觀測外,天文攝影可以嗎?
A: LXD75 smart drive可有效減低PEC, 適合天文攝影
 

stock available!!! 有 現 貨


MEADE 全自動追星赤道儀 LXD75 W/ #497 AUTOSTAR, TRIPOD, COUNTERWEIGHT. VIXEN TYPE PLATFORM (FEMALE)

HK$5,180 self pick up price *STOCK AVAILABLE*

MEADE AUTOSTAR
The AutoStar controller helps you quickly find, and GO TO over 30,000 objects in the night sky. View planets, stars, galaxies, nebulae, and comets…all at the push of a button. AutoStar is pre-programmed with several guided tours, including the popular Tonight’s Best(TM). Input date, time and location—then let AutoStar take you on a guided tour of the best objects that particular night.

可 連 接 用 電 腦 控 制

STANDARD FEATURES

* Telescope Mounting: LXD75, German-type
* Setting Circle Diameters, RA and Dec.: 2.25"
* Polar Illuminated Viewfinder: included
* RA Control System: 9-speed, microprocessor-controlled, 12v DC, 72mm (2.83") worm gear
* Declination Control System: 9-speed, microprocessor-controlled, 12v DC, 72mm (2.83") worm gear
* Hemispheres of Operation: North and South
* GO TO Pointing Precision (approx.): 15 arc mins.
* Slow-Motion Controls: electric, both axes
* Bearings: 2 – Ball Bearings RA: outer – 1x58mm, 1x47mm; inner – 1x45mm, 1x35mm DEC: outer – 1x72mm, 1x47mm; inner – 1x55mm, 1x30mm
* AutoStar? Hand Controller: PIC 16C57 microcontroller; 2 line x 16 alphanumeric character display; 20-button keypad, red LED backlit

* Main Telescope Controller: Motorola 68HC11 microprocessor; 1-Megabyte flash memory (field reprogrammable); 32K RAM
* Batteries (user-supplied): 8 x D-cells. LXD75-Series models may alternatively be powered from an automobile cigarette lighter plug, using the #607 Power Cord, or from a 115v AC home outlet, using the #547 AC Adapter; both the #607 and the #547 include 25 ft. cords. (not included)
* Battery Life (approx.): 40 hours
* Onboard Celestial Object Database: 30,223 objects
* Slew Speeds both axes: 1x, 2x, 8x, 16x, 64x, 128x sidereal; 1.5°/sec., 3°/sec., 4.5°/sec.
* Tracking Rates: sidereal, lunar, or custom-selected from 2000 incremental rates

全自動追星赤道儀 LXD75,smart drive可有效減低PEC, 適合天文攝影負載可達20公斤 !

市面充斥其他近似赤道儀 ,品質粗劣,質檢馬虎,
購買前請認明正貨 ,免招損失!

Meade LXD75 ACF-8AT 8" f/10 望遠鏡規格

Meade 8 Jupiter

2011年10月22日 00:00 - 01:28 HKT, EQ6,
Meade8 + 2x Barlow + Toucam, 800/900 frames, seeing 6/10
taken with Meade 8" OTA
Registax6

疊相時用Drizzling整大了一倍,再在photoshop
縮返0.66%

AstroForum 天台影木星

Image courtesy by its owner



2003-9-12 1531UT
Telescope: Meade 8" S-C w/3x barlow, diagonal as extension, Toucam Pro Stacking: 537frames, Registax2.0 & Photoshop
Photo: Jabis
(HK)

M8, The Lagoon Nebula
LRGB image; 8" Schmidt-Newtonian @ f/4, HX916 Camera
June 6, 2002 from Escondido, CA
L=60 minutes with Red filter; RGB=30:30:30 binned 2x2




非球面修正鏡 (aspherical corrector) 可原全將球面像差 (spherical aberration)消除


M16, The Eagle Nebula
LRGB image; 6" Schmidt-Newtonian @ f/5, HX916 Camera
May 11, 2002 from Escondido, CA
L=80 minutes with Red filter; RGB=40:40:40 binned 2x2



STABLE MEADE LXD75 GERMAN EQUATORIAL MOUNT:

Sturdy Mount with Heavy-Duty Castings Designed by Meade’s engineers and manufactured for high-performance observing and astrophotography.

Shaft & Bearing System The sturdy German Equatorial Mount is accurate and precise. The RA and Dec axes move effortlessly on four
high-precision stainless steel ball bearings.

High-Precision Worm Gears Located on both axes for smooth tracking and slewing.

High-Precision Pointing (HPP) For even more precise pointing use the HPP function. HPP puts objects in the center of the field-of-view which allows you to confirm deep sky objects at the faintest limits of the telescope’s capability.

Periodic Error Correction Corrects periodic errors on the RA axis over the course of one or more training periods, thereby minimizing guiding corrections during long-exposure photography.

9-Speed Drive Controls From a rapid slew rate of 4.5°/sec. to 1x sidereal—it’s all controlled from the AutoStar controller.

3-Star Alignment Ensures precise alignment while eliminating the need for a complicated optical/mechanical alignment process.

Heavy-Duty Tripod Variable-height field tripod with spreader bar brace provides the stability and vibration damping required for visual observation and astrophotography.

Illuminated Polar Alignment Viewfinder For quick, precise polar alignment.

Power Supply Powered by 8 D-size batteries. Can also be powered by optional car cigarette lighter or AC wall adapter.





Specifications for Meade LXD75 N-6EC 6" Newtonian Telescope:

* Aperture: 6" (152mm)
* Focal Ratio: f/5
* Focal Length: 762mm
* Primary Mirror: Plate Glass
* Viewfinder: 6 x 30
* 2" Aluminum rack and pinion focuser.
* Accepts both 1.25" & 2" eyepieces.
* Hand Controller: Electronic


Specifications for Meade LXD75 10" Schmidt Newtonian Telescope:

* Aperture: 10" (254mm)
* Focal Ratio: f/4
* Focal Length: 1016mm
* Corrector Lens: White Water
* Primary Mirror: Pyrex
* Viewfinder: Achromatic 8x50
* 2" Aluminum rack and pinion focuser.
* Accepts both 1.25" & 2" eyepieces.
* Hand Controller: Autostar

 


Meade LXD75 系列
'史密特-牛頓' (Schmidt-Newtonian) 望遠鏡之優點為廣視場, 大光圈折反射系統望遠鏡, 配合 LXD75 德式赤道儀, Autostar 控制, 適合目視觀測及攝影用途. 由於其修正透鏡為非球面 (aspherical) 設計, 使整個視場的星點皆呈點狀, 沒有彗差 (coma), 故其光圈 (焦比, focal ratio) 可達 f/4, 極適合觀測星雲、星團及作 '尋彗星鏡' (comet hunter) 用途.

LXD75 的赤道儀可用手動及自動追蹤, 極軸的仰角及水平均可微調以便準確對準天球北極, 適宜長時間追蹤攝影之用. 配合先進之 Autostar 手控, 只需輸入日期, 時間及預調兩顆修正星 (alignment star), 即可自動導入 30,223 個天体: 包括太陽,行星, 小行星, 彗星, 星雲, 星團 及預設的任何目標

由於所有LXD75赤道儀是運作於極軸制式 (Polar mode祇赤經馬達轉動), Autostar 25E/ 26E 或以前版本, 請即用 #505 connector cable set下蛓最新版本 31E. Autostar 31E 或以後版本, 請在 Setup > Telescope > Telescope Model 選擇 LXD75適用型號, 以便轉為極軸式 (polar mode)正常運轉.
#505 Connector cable set: 含連接 Autostar 及電腦的連線、串連埠轉接器及 Autostar 並聯線 (另購).

Autostar
更新網址: http://www.meade.com/support/auto.html   http://www.meade.com/support/auto/ASU361.exe  

LXD75系列 與 Autostar 簡易對準 (alignment)

1. Autostar 上按 5
2. 輸入 [日期], 本地 [時間], Daylight Saving [NO]
3.
屏幕顯示 Align, Enter 選擇 easy
4. Home Position/
歸零位置: 將鏡筒調成向北 (與極軸平衡) 及平衡錘置於最低位置 (平衡桿呈垂直狀態)
5.
enter, 望遠鏡自動指向一顆己設定的亮星
6. 如該星不在主鏡視場, 按 上///右符號鍵
7. enter, 望遠鏡再自動指向另一顆己設定的亮星
8. 如果該星不在視場, 重覆步驟 6
9.
如果該星剛在視場中央, enter
10. alignment
步驟完成, 望遠鏡已在追蹤及自動找星

赤緯馬達置於西方位置, 將鏡筒環下方燕尾接口 [] (dovetail adapter, male) 與於赤道儀上方燕尾接口 [] (dovetail adapter, female) 鎖緊。

極軸鏡對準方法:

1. 將西六對應刻度指針

2. 再把當晚日期對應當晚時間

3. 再把極軸鏡內的北極星移至 [ ] 內, 基本上人手對極方面已大致完成

4. 最後, 啟動 LXD75 Handbox 便可

備註: Autostar 使用 utilities>park scope 關機後再開機, 若三腳架位置沒有移動, 則無需再做修正 (align) 這個步驟.
型號 SN-6 SN-8 S-N10
口徑  152mm (6") 203mm (8") 254mm (10")
焦距 762mm f/5 812mm f/4 1016mm f/4
解像度 (弧秒) 0.74 0.56 0.45
鍍膜 MgF2, 標準鋁 MgF2, 標準鋁 MgF2, 標準鋁
主鏡材料 Pyrex® Pyrex® Pyrex®
極限星等/ 攝影星等 13.5/ 16.0 14.0/ 16.5 14.5/ 17.0
最高可用倍率 400x 500x 600x
鏡筒尺寸(直徑x長度) 7.1"x27" 10"x29.5" 11.9"x36.1"
副鏡直徑/ 遮擋比率 2.14"/ 12.7% 3.1"/ 15.0% 3.19"/ 10.2%
平衡錘 (kg) 1x4.5 2x4.5 3x4.5
極軸望遠鏡 內藏 內藏 內藏
赤經、赤緯系統 9段速, 12V DC, 72mm 蝸牙 9段速, 12V DC, 72mm 蝸牙 9段速, 12V DC, 72mm 蝸牙
GOTO 精度 (弧分) 15 15 15
自動導入天体數目 30,223 30,223 30,223
轉向連度 (雙軸) 1x, 2x, 8x, 16x, 64x, 128x
甯P速; 1.5/, 3/, 4.5/
1x, 2x, 8x, 16x, 64x, 128x
甯P速; 1.5/, 3/, 4.5/
1x, 2x, 8x, 16x, 64x, 128x
甯P速; 1.5/, 3/, 4.5/
總重量 (kg) 22 31 39
三腳架高度 27"~43" 27"~43" 27"~43"

SPECIFICATIONS: Models SN-6, SN-8, and SN-10 Schmidt-Newtonian Telescopes — Each complete telescope includes 6" f/5, 8" f/4, or 10" f/4 Schmidt-Newtonian optical tube assembly with MgF2 coatings on the correcting lens and standard aluminum coatings on the primary and secondary mirrors (Ultra-High Transmission Coatings, available optionally); quick-release cradle ring assembly with locks; 6 x 30mm achromatic viewfinder; metal rack-and-pinion focuser with eyepiece holders for both 1.25" and 2" eyepieces; Series 4000 Super Plössl 26mm eyepiece. LXD55 German-type equatorial mount with worm gear drives and electric slow-motion controls on both axes; micrometric controls for azimuth and elevation adjustments; illuminated polar alignment finder with reticle; variable-height field tripod with accessory shelf. Autostar dual-axis control system with digital readout display; 9-speed drive controls; 30,223-object celestial software library and automatic GO TO object-locating. Battery pack accepting eight (user-supplied) D-cells (optional 25 ft. cords permit powering from either 12v DC auto cigarette lighter plug or from 115v AC home outlet); operating instructions.

如需更詳細資料, 請參閱 
Meade 網頁 或 下載產品目錄



Mars by Chin Wei Loong, Malaysia taken with ToUcam+Meade SC-8"/LXD500

狗仔隊也用Meade 8?



一點也不稀奇
美國間碟早於70年代已使用8吋折反射

(史密特-卡塞格林)望遠鏡進行偵察敵方機密活動.

這類鏡頭也曾出現於人所共知的占士邦

James Bond 007電影
中...
 

Spectacular CCD & ToUcam images taken with SN6" 8" & SC8/LXD55   
SN6", 8" & SC8"/LXD55 拍攝的精彩照片

    (by courtesy of Paul LeFevre)                                                                        (承蒙  Paul LeFevre 借用) 


LXD55 Yahoo discussion groups
 LXD55 web page by Richard Harris

 

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