Description
- Lightning-Fast Imaging: RASA’s legendary ultra-fast f/2.2 optics let you capture deep-sky images with briefer sub-exposures and less total exposure time —often eliminating the need for autoguiding.
- Mobile But Mighty: Weighing just 8.4 lb and featuring a versatile CG-5 dovetail, the RASA 6 is ready to image wherever you are.
- Sub-Arcsecond Potential: With advanced optics capable of sub-arcsecond resolution, RASA 6 perfectly pairs with a high-resolution camera and favorable sky conditions to reveal fine structures in galaxies and nebulae.
- Expansive Field of View: Designed for sensors up to 22mm diagonal, RASA 6 offers a generous 3.8° view that effortlessly frames wide celestial targets.
- Maximized Light Throughput: Celestron’s proprietary XLT coatings ensure every image bursts with brightness and contrast.
- Convenience & Customization: With built-in features like a filter drawer and cooling fan—and optional upgrades—RASA 6 adapts to your evolving astroimaging needs.
Specifications
| Optical Tube Info: | |
|---|---|
| Optical Design: | Rowe-Ackermann Schmidt Astrograph |
| Aperture: | 152mm (5.98″) |
| Focal Length: | 335mm (13.18″) |
| Focal Ratio: | f/2.2 |
| Central obstruction diameter: | 77mm (3.03″) (50.7% of aperture diameter) |
| Light Gathering Power (Compared to human eye): | 472x |
| Resolution (Rayleigh): | 0.91 arc seconds |
| Resolution (Dawes): | 0.76 arc seconds |
| Image Circle: | 16mm (0.63″) Ø, 2.74° |
| Useable field: | 22mm (0.86″) Ø, 3.76°, only minimal performance loss at edge of FOV |
| Wavelength range: | 400 – 700 nm |
| Spot size: | < 1.5 μm RMS across image circle |
| Optical Coatings: | StarBright XLT |
| Off-axis Illumination: | 91% at 8mm (0.31″) off-axis |
| Back focus with included camera adapter: | 17.5mm (0.69″) |
| Optical Tube: | Aluminum |
| Optical Tube Length: | 500.5mm (19.7″) |
| Optical Tube Diameter: | 177.8mm (7″) |
| Focuser: | Standard Schmidt-Cassegrain focuser |
| Finderscope: | Not included |
| Optical Tube Weight: | 8.4 lbs (3.8 kg) |
| Other Features: | Air-cooling system, integrated filter mount |
| Included items: | 42mm (1.65″) T-thread camera adapter Fan battery pack Filter drawer with 2″ clear filter |
| Dovetail: | CG-5 Dovetail Bar |
| Filter Drawer: | Accept 2″ format filters, includes 1.25″ filter adapter |
| Clear Filter: | 2″ filter, removable, AR coatings, 2mm glass thickness |
| Cooling Fan: | 12V DC, MagLev |
| Camera Mounting Threads: | M42 |
| Additional Information | |
| Solar Warning |
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| California Prop 65 |
WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov
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