Sky-Watcher SKU: S11510 | Helix SKU: CTS11510
SKU | S11510 |
UPC | 050234115100 |
Optical Info | |
---|---|
Optical Design | Mak-Cass |
Mirror Coatings | 94% Aluminum |
Lens Coatings | Fully Multi-Coated |
Glass Type | BK7/Borosilicate |
True Aperture (mm) | 101.93 |
Primary Aperture (mm) | 102 |
F/Ratio | 12.7 |
Focal Length (mm) | 1300 |
Secondary Diameter | 31mm |
Secondary Obstruction (by diameter) | 30% |
Secondary Obstruction by Area | 9% |
Observational Info | |
Dawes Limit | 1.14 |
Rayleigh Limit | 1.37 |
Limiting Mag. | 12.5 |
Minimum Magnification | 14 |
Maximum Magnification | 201 |
Light Gathering (compared to next size down) | 28% |
General Info | |
Focuser | Primary Mirror |
OTA Length (Retract/Ext.) | 12.25 |
OTA Outer Diameter | 4.625" |
OTA Weight (with accessories) | 4.6 |
Accessories | |
Included Finder | Red Dot |
Included Diagonal | 1.25" Star Diagonal |
Mounting Accessories | V-Rail |
Included Eyepieces | 25/10 Wide Angle |
Magnification w/ Included Eyepieces | 52x/130x |
Included Case | Yes |
Corrector | No |