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Description
Celestron Rowe-Ackermann f/2.2 Schmidt Astrog... Overview
The Advanced VX 6" f/2.2 Rowe-Ackermann Schmidt Astrograph Telescope from Celestron combines the patented, super-fast catadioptric astrograph with a solid and stable computer-controlled GoTo mount for a complete imaging rig that allows you to capture stunning images of everything from the marias of the moon to wispy nebulae. This telescope includes the f/2.2 6" RASA optical tube, the Advanced VX mount, a sturdy 2" stainless steel tripod, and an array of basic accessories. All you need is a camera or imaging rig and a dark sky to point it all at.
The Celestron 6" f/2.2 Rowe-Ackermann Schmidt Astrograph Telescope (RASA) is specifically designed for astrophotography and astro-imaging with a large aperture and fast focal ratio. Using three-element rare-earth optical glass lenses ensures accurate color rendition and eliminates aberrations such as coma and field curvatures. The improved StarBright XLT multicoating system, which includes antireflection coatings on the lenses and highly reflective coatings on the mirrors, increases light transmission throughout the entire optical path. An integrated fan reduces cooldown time and provides optimal airflow through the optical tube assembly (OTA) while filtering harmful dust from the interior.
The astrograph design is defined by its fast focal ratio, which reduces exposure times without sacrificing image quality and gives you more time for multiple shots of the same object for layering or with different filters. Its internal Ultra-Stable focusing mechanism enables very precise focusing to clearly resolve topographic details on the Moon or split double stars and reveal details of most other celestial objects in between, while minimizing unwanted lateral movement of the primary mirror when focusing or slewing. Since this OTA is designed as an imaging scope, the included 42mm camera adapter is compatible with most camera-specific T-rings.
- 152mm (6") diameter aperture enables near- and deep-sky viewing without being prohibitively large or heavy for easy transport to viewing locations
- 335mm focal length helps produce a fast focal ratio
- Fast f/2.2 focal ratio requires significantly lower exposure times versus slower ratios to produce the same results
- Rowe-Ackermann Schmidt astrograph (RASA) design is purpose-built for astrophotography and imaging performance, and is not recommended for visual use
- Proprietary StarBright XLT fully multicoated optical system
- Four-element rare-earth glass for true color rendition without aberrations across the entire field of view
- Wide 400-700nm spectral range improves images of deep space objects like galaxies and nebulae
- Image circle: 22mm (0.86")
- Resolution: 0.91 arcsec (Rayleigh), 0.76 arcsec (Dawes)
- Back focus: 17.5mm (0.98") with included camera adapter
- Optical window can be removed and replaced with optional filters such as a light pollution filter
- Integrated cooling fan brings optical system to ambient air temperature for better performance
- Runs on eight user-supplied AA batteries or optional 12 VDC power adapter
- Multilayer mirror coatings made from aluminum, SiO2 (silicon dioxide), and TiO2 (titanium dioxide)
- Reflectivity is flat across the light spectrum, for both astrophotography/astro-imaging
- Multilayer antireflective coatings made from MgF2 (magnesium fluoride) and HfO2 (hafnium dioxide)
- High-transmission water white glass corrector lens with 97.4% light transmission
- Focusing system moves primary mirror forward and back to achieve tack-sharp images
- Ultra-stable design minimizes unwanted lateral movement of the primary mirror when focusing or slewing
- Fine adjustments for precise focusing, approximately 30 turns of the knob runs through the focus range
- OTA only, mount and tripod required for proper use
- Includes CG-5 dovetail plate for use on mount heads
- Weight: 8.4 pounds
Engineered and optimized for astrophotography with mid-sized optical tube assemblies (OTAs), the Celestron Advanced VX GoTo German Equatorial Mount delivers the performance required for clear images through the use of dual-axis low-cog DC servo motors and backlash compensation. Added to this are encoders on the motors and Permanent Periodic Error Correction (PPEC), which help to improve positioning and tracking precision and ensure your target object stays centered for long-exposure photography techniques. Supporting the mount is a large 2" stainless steel tripod that has a wide stance for stability on most terrain and a center tray that holds 1.25" and 2" eyepieces and accessories and acts as a leg lock to further stabilize while helping to minimize vibrations.
The brain of the system is the NexStar+ computer controller, which is equipped with a database of over 40,000 objects, including the planets, stars, nebulae, galaxies, and the complete Messier catalog; it can also be programmed with up 100 custom user-defined objects with filters to create custom object lists. Its intuitive menu-driven user interface makes observing the heavens fast and easy; features such as guided tours, extended information on 200 popular objects, and multiple alignment options make the NexStar+ controller an invaluable tool to new users and experienced stargazers alike.
- 30-pound payload capacity
- Dual-axis low-cog DC servo motors
- Dual motor encoders improve tracking and location accuracy with reduced vibrations
- 7-77° latitude range
- Uninterrupted tracking below meridian to enable observation from a raised location such as a balcony or hilltop
- Integrated 12" counterweight bar with one 12-pound counterweight
- Vixen-style CG-5 dovetail saddle
- 40,000+ object database
- 100 user-defined programmable celestial or terrestrial objects
- Enhanced information on over 200 objects
- Nine slew speeds: 4°/sec, 2°/sec, 1°/sec, 0.3°/sec, 32x, 16x, 8x, 4x, 2x
- Three tracking rates: Sidereal, Solar, Lunar
- Multiple alignment procedures: Two-star, One-star, Solar system, Quick-align, Last-align
- Sky Tour Mode: System seeks out the best objects for the date and time and automatically slews to them
- Identify Mode: Use to identify an unknown object in the field of view, or to find other celestial objects that are close to where the user is viewing
- Anti-backlash compensation: Trains out the intrinsic play between gears for more precise slewing and tracking
- Permanent Periodic Error Correction (PPEC): System learns its internal tracking errors and improves over time for more precise tracking, requiring fewer corrections
- Built-in instructions guide you through the alignment procedures
- 4-line, 18-character LCD display with a 19-button fiber-optic backlit LED keypad
- RS-232 comm port
- Supports English, French, Italian, German, and Spanish
- Database details:
- Solar system: Seven planets, Moon, Sun, and Pluto
- Custom lists of all the brightest stars, double stars, variable stars, and asterisms
- Custom lists of galaxies, nebulae, and clusters, as well as the complete Messier catalog and select NGC objects
- Tubular stainless steel legs
- 2" leg diameter
- 44-64" height-adjustment range
- Center tray holds 1.25 and 2" eyepieces and locks legs in place for greater stability and vibration reduction
- Removable hand controller holder can be moved to avoid cord wrap during long observation sessions
- Weight: 18 pounds
Items Included
- Celestron 6" f/2.2 Rowe-Ackermann Schmidt Astrograph Telescope (OTA Only)
- 42mm Camera T-Adapter
- Filter Drawer with 2" Clear Filter
- Fan Battery Pack
- Limited 2-Year Manufacturer Warranty
- Celestron Advanced VX GoTo German Equatorial Mount
- Stainless Steel Tripod with Tray
- Counterweight Bar
- 12 lb Counterweight
- Hand Controller Holder
- NexStar+ Hand Controller
- 12 VDC Car/Vehicle Power Cord
- Declination Motor Cable
- Limited 2-Year Manufacturer Warranty
Additional Resources
Guides & Manuals
Celestron Rowe-Ackermann f/2.2 Schmidt Astrog... Specs
| Optical Design |
Schmidt Cassegrain
|
| Aperture |
152 mm / 6"
|
| Focal Length |
335 mm
|
| Focal Ratio |
f/2.2
|
| Focuser |
Internal
|
| Battery |
8x AA
|
| Weight |
8.4 lb / 3.8 kg (OTA)
|
| Optical Design |
Schmidt Cassegrain
|
| Aperture |
152 mm / 6"
|
| Focal Length |
335 mm
|
| Focal Ratio |
f/2.2
|
| Resolution |
0.91 Arcsec (Rayleigh)
0.76 Arcsec (Dawes) |
| Focuser |
Internal
|
| Diagonal |
No
|
| Finderscope |
No
|
| Mounting |
Dovetail
|
| Optical Tube Dimensions |
24 x 7" / 61 x 17.8 cm (Length x Diameter)
|
| Payload Capacity |
No
|
| Altitude Adjustment |
No
|
| Latitude Adjustment |
No
|
| Counterweight |
No
|
| Battery |
8x AA
|
| Adapter |
12 VDC
|
| Weight |
8.4 lb / 3.8 kg (OTA)
|
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Bulk Discount
| Quantity | Price |
| 2 | ₹ 419057.8 |
| 3-5 | ₹ 414781.7 |
| 5-10 | ₹ 406229.5 |
| 10+ | ₹ 397677.3 |
Bulk discount will be automatically applied during checkout based on quantity.