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Levenhuk Skyline Pro Mak Telescope, Black, Oversized, 127 Mm Save $50.00 Brand Levenhuk

หากกำลังมองหา Levenhuk Skyline Pro Mak Telescope, Black, Oversized, 127 Mm Save $50.00 Brand Levenhuk อยู่และต้องการ ตรวจสอบราคา เพื่อตรวจสอบ ราคาล่าสุด โปรโมชั่นและ ราคาส่วนลด เราได้เจอข้อมูลของ Levenhuk Skyline Pro Mak Telescope, Black, Oversized, 127 Mm Save $50.00 Brand Levenhukในอินเตอร์เน็ตที่มีคนรีวิวแล้วได้อ่านมาพอสมควรว่า สินค้านี้ใช้ได้ดีเลยทีเดียว แต่การเลือกซื้อสินค้าในเว็บออนไลน์ ควรเลือกซื้อสินค้าในเว็บที่มีชื่อเสียง ให้ข้อมูลครบถ้วน และควรอ่านรีวิวสินค้า เพื่อให้แน่ใจ ว่าเป็นสินค้าที่ดี เพื่อความคุ้มค่า ก่อนการตัดสินใจซื้อ เราแนะนำว่า คุณควร ตรวจสอบราคา เสปค ยี่ห้อ ของแบรนด์เนม หรือ ของก็อป มีการการันตี หรือไม่ ถ้าเกิดซื้อมาแล้ว ใช้งานไม่ได้ เคลมได้หรือไม่ มีระยะเวลาในการ การันตีเท่าไหร่. ถ้าคุณต้องการเช็คข้อมูลเพิ่มเติมของ Levenhuk Skyline Pro Mak Telescope, Black, Oversized, 127 Mm Save $50.00 Brand Levenhuk จากร้านค้าออนไลน์ที่น่าเชื่อถือมากที่สุด และ ได้รับความนิยมมากในขณะนี้


Levenhuk Skyline Pro Mak Telescope, Black, Oversized, 127 Mm Save $50.00 Brand Levenhuk.

Product Description

Product Info for Levenhuk Skyline PRO MAK Telescope, Black, Oversized, 127 mm

The Levenhuk Skyline PRO MAK Telescope, Black, Oversized, 127 mm goes above and beyond the skyline for you. Levenhuk Skyline PRO MAK Telescope is a catadioptric telescope of Maksutov-Cassegrain optical design. This design allows for a long focal distance encased in a tube that allows for easy stargazing in the the conutryside. The aperture and long focal distance make this telescope perfect for high-powered planetary observations, and provide views of high quality. At medium power you can observe various deep-sky objects, such as nebulae and star clusters. This model is for those who do not want to worry about carrying cumbersome equipment to the countryside for observations, but still want to have a powerful tool for their observations. Besides, this telescope may be easily mounted on a regular tripod and - with an addition of an erecting prism - may become a powerful spotting scope for terrestrial observations.

The lenses and mirrors of the Levenhuk Skyline PRO MAK are fully multi-coated, which allows for maximum light-gathering and increases their service life. The sturdy and lightweight aluminum tube is set up on an equatorial mount with slow-motion controls. You can also install the equatorial computerized drive system (purchased separately) on your mount. It is equipped with setting circles which - after a quick adjustment - allow for locating objects by their celestial coordinates and tracking them with just a turn of an equatorial control. The adjustable height tripod has a practical accessory tray where you can store all your tools. Levenhuk Skyline PRO MAK Oversized Telescope was designed for advanced and demanding astronomers and includes a range of different models. The one thing in common is maximum precision and reliability during observations and astrophotography, high-quality materials and optics.

Specifications for Levenhuk Skyline PRO MAK Telescope, Black, Oversized, 127 mm:

Optical design: Maksutov-Cassegrain
Optics coating: fully multi-coated
Objective lens diameter (aperture), mm: 127
Focal length, mm: 1500
Highest practical power, x: 250
Focal ratio: f/11.8
Resolution threshold, arcseconds: 1.1
Limiting stellar magnitude: 12.5
Eyepieces: SUPER 25 mm, SUPER 10 mm
Eyepiece barrel diameter: 1.25
Finderscope: Red Dot
Tripod: steel
Tripod height (adjustable), mm: 700-1120
Tripod height (adjustable), in: 27.6-44.1
Mount: German equatorial EQ3
Optical tube dimensions, mm: 143x370
Optical tube dimensions, in: 5.63x14.57
Optical tube weight, kg: 3.3
Optical tube weight, lbs: 7.3
Usage: General use product.May be used by kidsover 3 years old.

Package Contents:

  • Levenhuk Skyline PRO MAK Telescope, Black, Oversized, 127 mm
  • PL 10
  • PL 25 eyepieces
  • User Manual and Warranty

Explore Scientific 12in/305mm Truss Tube Dobsonian Telescope Save 55% Brand Explore Scientific.

Product Description

Product Info for Explore Scientific 12in/305mm Truss Tube Dobsonian Telescope

Explore Scientific 12" (305mm) Truss Tube Dobsonian. 1525mm Focal length f/5. 2" two-speed focuser with 10:1 speeds. Deluxe Red-dot finder. Two large radial fans for fast thermal equilibrium. Lightweight and portable two-piece design allows the primary objective to store in a unique self contained aluminum housing with a lid for transport and the secondary fits inside the aluminum rocker box. Primary mirror inside mirror box weighs 41.7 lbs. Primary, secondary and truss tube assembly weighs 50.5 lbs. Rocker box weighs 15.7 lbs. Total weight 66.2 lbs.

Package Contents:

  • Explore Scientific 12in/305mm Truss Tube Dobsonian Telescope

Meade Lightbridge Mini 114 Newtonian Reflector Telescope Save 29% Brand Meade.

Product Description

Product Info for Meade LightBridge Mini 114 Newtonian Reflector Telescope

Aperture: 114mm, Focal Length: 450mm, Focal Ratio: f/4; Parabolic Primary

Specifications for Meade LightBridge Mini 114 Newtonian Reflector Telescope:

Included Accessories: 2 Eyepieces,2x Barlow Lens,Red Dot Viewfinder,Autostar Suite Astronomy Planetarium DVD
Finish: White

Package Contents:

  • Meade LightBridge Mini 114 Newtonian Reflector Telescope

Celestron Digital Microscope Imager, 2mp, 1600x1200 Save 11% Brand Celestron.

Product Description

Product Info for Celestron Digital Microscope Imager, 2MP, 1600x1200

Turn your traditional microscope (stereo and biological) into a high-resolution digital microscope using a 2MP CMOS sensor digital microscope imager. Place the imager over the eyepiece of your microscope and stream the image to your computer via a USB cable. Its the perfect tool for hobbyists, teachers, students, medical labs, exhibits and more.

Celestron S-Viewer Software

Use the included Windows software to capture images and video of your discoveries. Measure and annotate your specimens with built-in measurement and marking tools.

Note S-Viewer software is only compatible with Windows (XP, Vista, Windows 7/8/10). Imager can be used directly as an external camera on Mac OS systems via Photo Booth or Quick Camera.

Specifications for Celestron Digital Microscope Imager, 2MP, 1600x1200:

Included Accessories: Digital Microscope Camera, USB 2.0 cable, CD with control software S-Viewer and driver, Adapter ring (23.2mm - 30mm)
Color: Black

Features of Celestron Digital Microscope Imager, 2MP, 1600x1200:

  • 2MP image sensor makes a traditional microscope into a digital microscope
  • Capture images and video of your specimens via your computer.
  • The microscope imager works with 23 mm to 30 mm diameter eyepieces.
  • Connect the imager to your computer via USB 2.0 cable.
  • New Celestron S-Viewer imaging software for Windows 7 /8 / 10.
  • Imager itself compatible with Mac OS Photo Booth and Quick Camera.
  • Sensor type: Color CMOS
  • Imaging sensor size: 1/3.2"
  • Pixel size: 2.8m2.8m
  • Effective pixels: 1600 x 1200
  • Max resolution: 1600 x 1200
  • Exposure Controls: Auto/Manual
  • Gain Control: Auto/Manual
  • White Balance: Auto/Manual
  • Image Frame Rate: 15fps @ 1600 x 1200
  • 15fps @ 1280 960
  • 30fps @ 640 480
  • Control interface: USB 2.0
  • Control Software Operating System: Windows XP
  • Vista
  • Win7
  • Win8
  • Win10
  • Power: USB 2.0 supported
  • Operating Temp: 0 degree to 50 degree C
  • Weight (without box): 90g
  • Dimensions (without box): 30mm 53.5
  • Included Accessories:Digital Microscope Camera
  • USB 2.0 cable
  • CD with control software S-Viewer and driver
  • Adapter ring (23.2mm - 30mm)
  • Included Accessories:
  • Digital Microscope Camera
  • USB 2.0 cable
  • CD with control software S-Viewer and driver
  • Adapter ring (23.2 mm to 30 mm)

Package Contents:

  • Celestron Digital Microscope Imager, 2MP, 1600x1200

Meade Lx90acf 8in Telescope With Uhtc 0810-90-03 Save 40% Brand Meade.

Product Description

Product Info for Meade LX90ACF 8in Telescope with UHTC 0810-90-03

The Meade LX90ACF 8in Telescope with UHTC 0810-90-03 can do more than track satellites. Meade LX-90 ACF 8" UHTC Telescope talks to them as well. Turn the Meade LX 90 ACF 8 inch Advanced Coma Free Telescope on and the built-in Sony GPS sensor immediately determines your precise date, time and location. Meade AutoAlign then uses this info to align your telescope for a tour of the most spectacular sights in the universe. With all the features of the legendary Meade LX 90 Advanced Coma Free plus the ability to communicate to satellites, the new Meade LX90ACF 8" Telescope w/ UHTC now has it all. When it comes to industry-leading optics, depth of features, and value for your dollar, the Meade LX90 ACF Telescope is the best all-around telescope value you can find. Meade LX90 ACF Telescopes are upgraded versions of older Meade LX90 LNT Telescopes. Meade LX90ACF Astro Telescopes includes GPS Technology.

Meade AudioStar Controller - Meade LX 90 ACF Advanced Coma Free Telescopes include Meade AudioStar Computer Controller. Meade AudioStar Controller helps you quickly find, and GoTo over 30,000 objects in the night sky. Meade Audio Star Computer Controller allows to View planets, stars, galaxies, nebulae and comets - all at the push of a button. You don't already know the night sky? Let the preprogrammed Tonight's Best tour in your Meade AudioStar automatically point your Meade Telescope to the best objects in the sky and play detailed audio clips about them. Astronomy has never been so easy and rewarding. Meade AudioStar can be updated after purchase. Log on to www.meade.com to download software upgrades, guided tours and timely objects like comets, satellites and new discoveries - Free! Keep your Meade AudioStar Computer up-to-date, and your Meade LX90 ACF Go To Telescope will grow with you for years to come.

Autoalign - Meade LX 90 Telescopes with Meade Auto Align come pre-aligned. They are smart scopes that know the night sky right out of the box. Meade AutoAlign picks two fail-proof alignment stars for you and places them right in your viewfinder. Just center them to fine tune your alignment and the wonders of the universe are at your fingertips.

Advanced Coma-Free Design - Meade 's ACF optical design produces coma-free pinpoint star images and a flatter field that discerning astrophotographers and most professional observatories expect, and reduces the astigmatism and eliminates diffractions spikes found in classical RCs.

Oversized Primary Mirror - Only Meade manufactures their primary mirrors in diameters larger than their listed aperture (e.g. the diameter of Meade 8 in LX90 Telescope 's primary mirror is actually 8.25 in).This additional 1/4 inch yields a wider, fully illuminated field-of-view, and allows you to see the light other telescopes leave behind.

Slew Speed - Meade LX 90 ACF Computerized Telescope slews (moves) from star to star at 7 degrees per second. That is more than twice as fast as the competition. This means that over the course of an evening, Meade LX90ACF Telescope will show you two to three times more objects.

Rigid Cast Aluminum Fork Mount - The Meade LX90ACF OTA Optical Tube Assembly is mounted on two sturdy fork arms giving you a rock solid platform for astrophotography.

Meade LX200 Series Tripod - Meade LX90 ACF Telescopes come standard with the same sturdy field tripod as the Meade LX200ACF Telescopes.

Smart Drive - Meade AudioStar provides Periodic Error Correction PEC(in polar mode). Over the course of one or more training periods your LX90ACF Meade Telescope will minimize guiding corrections during long exposure astro photography.

Smartfinder (Red Dot) & 8 x 50 Viewfinder - Quickly and easily locate and center deep sky objects.

Meade UHTC - included with Meade 8 inch LX90 ACF 0810-90, Meade UHTC Ultra-High Transmission Coatings is a series of exotic optical coatings precisely tuned to optimize the visual, photographic and CCD imaging performance of your Meade LX90ACF Go To Telescope. Image brightness is increased by nearly 15% over standard Meade coatings.

Specifications for Meade LX90ACF 8in Telescope with UHTC 0810-90-03:

Objective Lens Diameter: 8 in
Focal Length: 2000 mm
Focal Ratio: f/10
Optical Coating: UHTC

Features of Meade 8 in LX90 ACF Telescopes:

  • GPS Technology
  • Meade AutoAlign
  • AudioStar Controller
    • Contains hours of audio descriptions of planets, stars, constellations, clusters, nebula, galaxies and more
    • Audio Star with Astronomer Inside takes you on a guided tour of the best objects in the night sky from your location at that time, playing audio descriptions of the objections and their details
    • AudioStar controls the telescope to track over 30,000 objects automatically
    • Meade Audio Star provides detailed knowledge of the cosmos on par with a professional astronomer
  • Meade UHTC Coatings
  • Advanced Coma-Free Optical Design
  • Oversized Primary Mirror
  • Rigid Cast Aluminum Fork Mount
  • Meade LX 200 Tripod
  • Smart Drive
  • Red Dot Smartfinder & 8x50 View Finder

Package Contents:

  • Meade LX90ACF 8in Telescope with UHTC 0810-90-03
  • Double-Tine Fork Mount
  • 8x50mm Viewfinder
  • 1.25" Star Diagonal
  • Meade Series 4000 Super Plossl 26mm eyepiece (77x)
  • Meade AudioStar Suite Software
  • Meade LX-200 ACF Series Tripod

Meade Lx85 8in Newtonian Reflector Telescope Save 38% Brand Meade.

Product Description

Product Info for Meade LX85 8in Newtonian Reflector Telescope

8" Newtonian Reflector - Aperture: 200mm; Focal Length: 1000mm; Focal Ratio: f/5. Parabolic aluminized primary with SiO2 coating and 2" rack and pinion focuser. LX85 German EQ Mount with AudioStar computer controller. Includes 8x50 optical viewfinder; 1.25" diagonal mirror; 26mm and 9mm Super Plssl eyepieces (38X and 111X). Optical tube weight is 20.7 lbs with dovetail. Two 10 lbs counterweights. Total telescope weight 64.0 lbs.

Specifications for Meade LX85 8in Newtonian Reflector Telescope:

Included Accessories: 9.7mm & 26mm Plossl /1.25in/ Eyepieces
Objective Aperture: 200 mm
Focal Length: 1000 mm
Focal Ratio: f/5

Package Contents:

  • Meade LX85 8in Newtonian Reflector Telescope

Carson Skyseeker 15x-37.5x Newtonian Reflector Telescope Save 26% Brand Carson.

Product Description

Product Info for Carson Skyseeker 15x-37.5x Newtonian Reflector Telescope

The Carson Optical SkySeeker 15-38x76mm Telescope JC-200 has precision 76mm Optics and a 15-37.5x power range for high-quality imaging. This Telescope from Carson has a Dobsonian Mount Telescope and comes with 8mm and 20mm Huygenian eyepieces. The precision optics on the Carson Sky Seeker Telescope offer amazing images of the moon and planets, as well as views of bright deep sky objects like the Orion Nebula (M42), Hercules Cluster (M13) and Andromeda Galaxy (M31).

Specifications for Carson Skyseeker 15x-37.5x Newtonian Reflector:

Model Number: JC-200
Magnification: 15x-37.5x
Aperture: 76mm (2.99)
Focal Length: 300mm
Weight: 3.7 lbs.
Accessories: 8mm and 20mm Huygenian Eyepieces, Dobsonian Mount
MSR: 99

Package Contents:

  • Carson Skyseeker 15x-37.5x Newtonian Reflector Telescope

Celestron Telescope Cgx 800 Rasa, F/2.0 Save 39% Brand Celestron.

Product Description

Product Info for Celestron Telescope CGX 800 RASA, f/2.0

This kit combines the 8 Rowe-Ackermann Schmidt Astrograph (RASA) with the state-of-the-art CGX German equatorial mount. Simply add a camera and this package offers everything you need to take spectacular images of wide-field deep sky objects. Although about the same size as the CGEM II, the CGX is a big step up in performance and features, especially for imaging applications.

RASA Performance Made for Everyone

Capture spectacular wide-field deep sky images in seconds with Celestrons new portable astrograph, the 8 Rowe-Ackermann Schmidt Astrograph (RASA). This incredibly fast f/2.0 system is the perfect companion to todays color astronomical CMOS cameras, smaller CCD cameras, and mirrorless cameras. Thanks to its fast focal ratio and patented optical design, you can produce sharp, detailed images and, in many cases, skip the autoguider completely. Weighing in at just 17 pounds, its easy to transport your 8 RASA to the most remote dark sky locations.

The 8 RASA is an imaging telescope that delivers a flat field without optical aberrations for razor sharp stars across a wide field of view. It can capture stunning deep-sky astronomical images without the challenges typically presented by longer focal length instruments at a fraction of the cost of those systems.

The latest addition to the RASA family, this 8 version is a much more portable and affordable version of the heralded RASA 11, which was introduced to much acclaim in 2014. With the 8 RASA joining the lineup, a wider range of astroimagers can enjoy the benefits of the RASA design. It has many of the same thoughtfully designed features as its big brother RASA 11, including the integrated air-cooling system, internal filter mount, and sturdy CGE dovetail mounting bar.

Purely designed for imaging, the 8 RASA cannot be used visually. The prime focus focal plane is located at the front of the optical system, so it cannot accommodate a traditional eyepiece.

Shorter Exposure Times and Virtual Real-Time Observing

Since it is an F/2.0 optical system, imagers can use shorter exposure times to capture detail in faint objects. When combined with sensitive cameras and the proper live stacking software, the 8 RASA can provide an almost real-time observing experience. View images on a computer instantly that are brighter and more detailed than can be seen in much bigger telescopes with the naked eye.

Ultra-Stable Focus System

With the launch of the 8 RASA, Celestron is unveiling a new focuser design that mitigates lateral movement of the primary mirror when focusing, slewing, or tracking with the astrograph. Focusing is easier, more accurate, and more stable than ever. The key to the Ultra-Stable Focus System is two sets of precision bearings that are precisely aligned and tested during assembly to ensure optimal results.

Built for Todays Latest Cameras

Unlike the larger RASAs that work with DSLR and large CCD cameras, the 8 model was designed with color astronomical CMOS cameras, smaller CCD cameras, and mirrorless cameras in mind. It is optimized for sensors with up to a 22mm diagonal, but still performs well with larger (up to 32mm diagonal) sensors. As such, it works well with APS-C sized sensors used in many mirrorless cameras.

Camera adapters to connect C-mount cameras and cameras that mount with M42 threads are included. Celestron offers optional adapters to connect your 8 RASA to Sony or Canon mirrorless cameras.

Unique Optical Design

RASAs optical design is patented (US 2016/0299331 A1). The design consists of a Schmidt corrector, primary mirror, lens group, and optical window. The lens group contains 4 elements and utilizes rare-earth elements. Unlike many telescopes that only perform well over the visible spectrum (400-700nm), the 8 RASAs optics are designed to perform over a wider spectral range, from 390-800nm. This allows more of the light emitted from the astronomical object to be sharply focused in the image.

With many imaging systems, adding an extra piece of flat glass such as a filter does not change optical performance. However, that is not the case with super-fast optical systems like the RASA. Our engineers addressed this by designing the RASA with a removeable optical window, so you can maintain peak optical performance if a filter is added or if a camera has its own optical window. Celestron offers a Light Pollution Imaging Filter designed specifically for the 8 RASA, which mounts in place of the optical window.

All refractive optical surfaces are coated with StarBright XLT coatings, while the primary mirror uses enhanced aluminum coatings. This maintains high light transmission through the entire optical system.

When compared with Hyperstar SCT systems, the RASA 8 provides better optical performance and field illumination.

CGX: The Ideal Platform for RASA

The CGX is the culmination of Celestron engineers decades of experience in equatorial mount design, incorporating feedback from imagers worldwide. Combined with the RASA 8, it is a state-of-the-art deep-sky astronomical imaging system.

The CGX is an incredibly sturdy equatorial mount which rigidly supports the RASA 8. The mount was designed more compactly, so the instrument load is held closer to the R.A. axis, thus reducing torque from the load. It was also designed using FEA (Finite Element Analysis) software, which helped to optimize the stout structure of the mount. As a result, the CGX can support more weight than other mounts with similar mass. With its 55 lb. load capacity, it can easily handle the RASA 8, which weighs only 17 lbs., along with a camera and any accessories. Expect a vibration-free setup, even in somewhat windy conditions. The RASA 8 connects directly to the CGX with its CGE dovetail mounting bar.

The heavy-duty adjustable height tripod has 2 diameter steel tripod legs with an extra-wide stance for improved stability. Graduated markings on the tripod legs make it easy to extend them to the same height and level the tripod.

The mount is packed with functionality and conveniences that make imaging with the 8 RASA easy. The fully computerized mount will automatically GoTo any of the 40,000+ astronomical objects selected from the NexStar+ hand controllers database and automatically track the object as it appears to move across the night sky.

Designed with imaging in mind, the CGX motor drive system builds upon learnings from previous generations of mounts. You can trust CGX to accurately track during an exposure. At the heart of the system are low cog DC servo motors with integrated optical encoders. The low cog design helps the motors run smoothly, while the integrated optical encoders provide accuracy. The motors connect to the worm gears with a belt-and-pulley system (instead of spur gears) to reduce gear backlash when the motor changes directions. The steel worm gears are supported by precision bearings and spring-loaded against a brass worm wheel, which also helps ensure a smoothly operating drive system with minimal backlash and no binding.

To track objects in the night sky, the mount must first be polar-aligned. Celestron makes this process easier than ever with the innovative All-Star Polar Alignment procedure. No extra equipment, such as a polar finder scope, is required. (An optional polar alignment finder scope is available if desired.) Best of all, the alignment can usually be completed in about 15 minutes, even without a clear view of Polaris.

All mounts have some amount of periodic tracking error inherent in them caused by tiny gear imperfections. To mitigate this, the CGX has Permanent Periodic Error Correction (PPEC). This allows you to run a routine to record the periodic errors only once; the recording is kept in memory, and subsequently corrects for the mounts periodic tracking error. If an even higher level of tracking accuracy is desired, the CGX also has a dedicated autoguider port to connect an autoguiding camera directly to the mount to correct for any residual tracking errors.

Conditions for imaging are best when celestial objects are at their highest point in the sky with the darkest background, called the meridian. But some German equatorial mounts have trouble tracking near the meridian because they need to perform a meridian flip, readjusting their position to avoid the tube striking the mount. CGX does not suffer from this problem, imaging through the meridian with ease and not requiring a meridian flip until the object is a full 20 past the meridian.

The NexStar+ also has dozens of other functions to control every aspect of the mounts behavior. These include:

Multiple ways to align the mount to the night sky

Adjustable slew rates up to 5/second

Northern or Southern hemisphere compatibility

Adjustable autoguiding rates

Hibernate mode so the mount can be powered down without loss of alignment

Continual firmware development, with new features added regularly

In addition to the autoguider port, the CGX also has other ports to enhance and expand the capabilities of the mount. The hand controller has a USB 2.0 port for those who wish to control the mount with an external computer and optional third-party software (see Ready for Remote Imaging section below). There are also 2 AUX ports on the mount that can support optional accessories such as StarSense AutoAlign.

Transporting the entire system to a dark site is extremely manageable, even for one person. The optical tube, mount head, tripod, counterweight bar, and counterweight all disassemble into separate pieces. The only tool ever required is a supplied hex key, which has a holder built into the mount, so you cant lose or forget it. CGX also features two ergonomic carry handles that make carrying and setting up this heavy-duty mount much more comfortable. When its time to transport your mount, the tripod accessory tray nests into the legs when collapsed, stabilizing the tripod in your vehicle and ensuring that you dont lose the tray.

Ready for Remote Imaging

Todays imagers do not necessarily want to be near their telescope outside when they are capturing images. Rather, they would prefer to be indoors controlling the mount and camera with a computer, while the telescope is in the backyard, or even hundreds of miles away in a dark remote observing site. Not every mount is capable of remote observing operation, but the CGX was designed specifically with this in mind. Celestrons engineers thought through every scenario that might occur in the field, since its very likely that no one will be around to immediately rescue a remote telescope if something unexpected occurs.

One of the most critical problems that can occur during remote operation is the optical tube inadvertently striking the mount. This will not only ruin an exposure and require realignment with the sky, but could also damage expensive equipment. This type of strike cannot happen with CGX because optical switches on each axis stop the motors before the astrograph can run into the mount, without loss of alignment.

Should power be somehow interrupted, the mount has home position optical switches that allow easy remote realignment of the mount. The mounts cables are all wired internally through the mount, and all external inputs, including the power jack, are on a stationary section of the mount. This prevents cables from becoming snagged or tangled and unplugged as the astrograph is moving. The mount also has hard stops to physically limit the motion of the astrograph on each axis, preventing the internal cabling from being overly twisted or pulled and potentially failing. In addition, the hard stops provide a fail safe safety measure to protect the astrograph should the limit switches somehow fail. The power jack for the mount utilizes a threaded barrel connector, ensuring the power cable wont become unplugged and cause the mount to lose power.

For remote imaging, the mount needs a way to be controlled by an external computer. The CGX has two ways to connect to a computer via USB 2.0. First, it has a USB port on the mount itself which is used exclusively to connect to a PC running the included Celestron PWI telescope control software. Developed in partnership with PlaneWave Instruments, the software has an intuitive graphical user interface and provides an excellent solution for remotely operating the mount. It incorporates multi-point mount modeling to provide the most accurate alignment of the mount to the sky possible. In addition, the included NexStar+ hand controller also has its own USB 2.0 port for computer connection; this can be used with optional third-party telescope control software by use of an ASCOM driver.

In summary, the CGX and RASA 8 together are a top-tier imaging system built for performance and ease of use. This kit is perfect for imaging in the backyard or at a remote dark sky site, whether you are near the telescope or on the other side of the globe.

Specifications for Celestron Telescope CGX 800 RASA, f/2.0:

Focal Length: 400 mm
Focal Ratio: f/2.0
Color: White
Optical Coating: StarBright XLT

Features of Celestron Telescope RASA CGEM II 800, f/2.0:

  • Flat field free of optical aberrations like field curvature
  • coma
  • astigmatism and chromatic aberration across an entire APS-C sensor.
  • NEW Ultra-Stable Focus System six precision sealed ball bearings virtually eliminate image shift.
  • Internal filter mount seamlessly accommodates a Light Pollution Imaging Filter into the optical path.
  • Performs over a wider spectral range than most telescopes
  • from 390-800 nm
  • so more of the light passing through the astrograph is in sharp focus.
  • The CGEM II
  • with its 40 lb
  • load capacity
  • is the latest update to the venerable CGEM mount and provides a sturdy and rigid platform for the fully-loaded RASA 8.
  • The drive system
  • consisting of low cog DC Servo motors with integrated optical encoders
  • steel worm gears supported by precision sealed bearings
  • and brass worm wheels
  • ensures smooth and accurate slewing and tracking.
  • Proven NexStar+ computerized telescope control technology supports functions to address imagers needs
  • such as All-Star Polar Alignment
  • Permanent Periodic Error Correction (PPEC)
  • and adjustable tracking through meridian.
  • Optical Design: Rowe-Ackermann Schmidt Astrograph
  • Aperture: 203mm (8")
  • Focal Length: 400mm (15.74")
  • Focal Ratio: f/2.0
  • Central obstruction diameter: 93mm (3.66") (46% of aperture diameter)
  • Light Gathering Power (Compared to human eye): 843x
  • Resolution (Rayleigh): 0.68 arc seconds
  • Resolution (Dawes): 0.57 arc seconds
  • Image Circle: 22mm (.86")
  • 3.15degree
  • Useable field: 32mm (1.26")
  • 4.6degree
  • only minimal performance loss at edge of FOV
  • Wavelength range: 390 - 800 nm

Package Contents:

  • Celestron Telescope CGX 800 RASA, f/2.0
  • CGEM II Equatorial Hea
  • Tripod
  • Accessory Tray
  • 1 x 17 lbs counterweight
  • NexStar+ Hand Control
  • DC Power Cable (plugs into cigarette lighter socket)
  • 8 mm Allen wrench (contained in rear carry handle).