Description
- A breakthrough 36 cm aperture, f/2.2 optical system designed for professional applications that require both a wide field of view and resolution, the Rowe-Ackermann Schmidt Astrograph (RASA) 36 cm is ideal for space surveillance and other scientific applications.
- With a 4-element lens group featuring extra-low dispersion (ED) glass for images free of false color, coma, and field curvature, RASA 36 cm is also an excellent choice for advanced astroimaging.
- New Ultra-Stable Focus System (USFS) minimizes focus shift, mirror flop, and any other unwanted motion of the primary mirror, enabling easy and dependable focus.
- 60 mm optimized image circle maintains pinpoint stars to the far corners of the largest available sensors.
- An extended spectral range takes advantage of sensor response in the 700-900 nm range, allowing a brighter overall signal to be detected.
Specifications
| Optical Tube Info: | |
|---|---|
| Optical Design: | Rowe-Ackermann Schmidt Astrograph |
| Aperture: | 355.6mm (14″) |
| Focal Length: | 790mm (31.1″) |
| Focal Ratio: | f/2.2 |
| Central obstruction diameter: | 158mm (6.22″)(44% of aperture diameter) |
| Light Gathering Power (Compared to human eye): | 2581X |
| Resolution (Rayleigh): | 0.39 arc seconds |
| Resolution (Dawes): | 0.36 arc seconds |
| Image circle: | 60.1mm (2.36″) Ø, 4.4° |
| Useable field: | 70mm (2.75″) Ø, 5.1°, only minimal performance loss at edge of FOV |
| Wavelength range: | 400 – 900 nm |
| Spot size: | < 6.3 μm RMS across FOV |
| Optical coatings: | Enhanced aluminum, XLT Multi-Coated throughout |
| Off-axis Illumination: | 83% at 30mm (1.18″) off-axis |
| Optical window: | 104mm (4.09″) Ø |
| Back focus with included camera adapter: | 55mm (2.16″) |
| Back focus from top of threaded collar: | 77.5mm (3.05″) |
| Optical Tube: | Aluminum |
| Optical Tube Length: | 1079.5mm (42.5″) |
| Optical Tube Diameter: | 406.4mm (16″) |
| Focuser: | Ultra-Stable Focus System (USFS), minimizes lateral movement of primary mirror |
| Finderscope: | Not included |
| Optical Tube Weight: | 75 lbs (34.02 kg) |
| Other features: | Ventilation fan, dual dovetail mounting bars |
| Included Items: | 48mm (1.89″) camera adapter Fan battery pack |
| Additional Information | |
| Solar Warning |
|
| California Prop 65 |
WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov
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