Description
- Rowe-Ackermann Schmidt Optical Design – 8” f/2.2 flat field imaging system with rare-earth glass for outstanding images free of optical defects like field curvature, coma, astigmatism and chromatic aberration across an entire APS-C sensor.
- 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. The astrograph does not work with standard DSLR cameras.
- Ultra-Stable Focus System – precision linear ball bearing virtually eliminates image shift.
- Integrated air-cooling system –12V DC MagLev fan reduces cooldown time and provides optimal air flow while filtering out dust.
- Internal filter mount – seamlessly accommodates a Light Pollution Imaging Filter into the optical path.
- Performs over a wider spectral range than most telescopes, from 400-800 nm, so more of the light passing through the astrograph is in sharp focus.
- Advanced VX, the most compact and portable of Celestron’s German equatorial mounts, offers a maximum instrument capacity of 30 lb with the same rigidity as our larger mounts and minimal flexure.
- This mount offers every feature an astroimager wants: PEC, an autoguider port, the ability to image across the meridian, and more.
- Dual saddle plate is compatible with narrow CG-5 dovetails and wider CGE dovetail. Also compatible with Vixen format dovetails longer than 100mm, but not compatible with Losmandy D format plates.
- Accessories included: M42 camera adapter, C-thread camera adapter, and fan battery pack.
Specifications
| Optical Tube Info: | |
|---|---|
| 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″) Ø, 3.15° |
| Useable field: | 32mm (1.26″) Ø, 4.6°, only minimal performance loss at edge of FOV |
| Wavelength range: | 400 – 800 nm |
| Spot size: | < 4.6 μm RMS across image circle |
| Optical Coatings: | StarBright XLT |
| Off-axis Illumination: | 93% at 11mm (.43″) off-axis |
| Optical Window: | 46mm (1.81″) Ø |
| Back focus with included camera adapter: | 25mm (.98″) |
| Back focus from top of threaded collar: | 29mm (1.14″) |
| Optical Tube: | Aluminum |
| Optical Tube Length: | 628mm (24.7″) |
| Optical Tube Diameter: | 235mm (9.3″) |
| Focuser: | Ultra-Stable Focusing System |
| Finderscope: | Not included |
| Optical Tube Weight: | 17 lbs (7.7 kg) |
| Other Features: | Air-cooling system, integrated filter mount |
| Included Items: | Advanced VX Equatorial Head and tripod Accessory Tray 1 x 12 lbs counterweight NexStar+ Hand Control DC Power Cable (plugs into cigarette lighter socket) |
| Dovetail: | CGE Dovetail Bar |
| Mount Info: | |
| Mount Type: | Computerized Equatorial |
| Instrument load capacity: | 30 lbs (13.6 kg) |
| Height adjustment range (includes mount and tripod): | 1118mm – 1626mm (44″ – 64″) |
| Tripod Leg Diameter: | 50.8mm (2″) Stainless Steel |
| Latitude adjustment range: | 7° – 77° |
| Mount Head Weight: | 17 lbs (7.71 kg) |
| Accessory Tray: | Yes |
| Tripod Weight: | 18 lbs (8.16 kg) |
| Weight of Counterweights: | 1 x 12 lbs |
| Slew Speeds: | 9 slew speeds – max speed 4°/second |
| Tracking Rates: | Sidereal, Solar and Lunar |
| Tracking Modes: | EQ North and EQ South |
| GPS: | N/A |
| Dovetail Compatibility: | Dual saddle plates (CG-5 and CGE saddle) |
| Number of Auxiliary Ports: | 3 AUX Ports (1 hand control and 2 AUX Ports for optional accessories) |
| Autoguide Port: | Yes |
| USB Port: | Yes, input on Hand Control |
| Power Requirements: | 12V DC 3.5A (tip positive) |
| Motor Drive: | DC servo motors |
| Alignment Procedures: | 2-Star Align, 1-Star Align, Solar System Align, Last Alignment, Quick Align |
| Periodic Error Correction: | Yes |
| Computerized Hand Control: | NexStar+ hand control with LCD display, 19 fiber-optic backlit LED buttons |
| NexStar+ Database: | 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects |
| Software: | Celestron Starry Night Special Edition Software and SkyPortal App |
| Total Kit Weight: | 47 lbs (21.31 kg) |
| Additional Information | |
| Solar Warning |
|
| California Prop 65 |
WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov
|
