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Explore 130 SAP
A fast, purpose-built astrograph for medium-format cameras. The Sky Rover 130SAP pairs a 130 mm f/5 Petzval quintuplet with a native 55 mm flat field, so larger sensors see well-corrected stars across the frame. It is presented as a dedicated imaging platform with robust mechanics for larger imaging trains.
Fast 130 mm f/5 Petzval optical system
Native flat field 55 mm image circle
3.7" dual-speed rack-and-pinion focuser
Built-in rotation adjustment
Rigid CNC tube with rings, handle, and Vixen plate
The 130SAP uses an air-spaced quintuplet Petzval APO layout with dual SD glass, an ED element and HR glass. This multi-element design drives strong chromatic correction and tighter star points, which reduces color fringing and improves fine detail across wide-field exposures.
A built-in flat field and a 55 mm image circle mean many medium-format sensors can be used without a separate field flattener. That simplifies back-focus planning and helps deliver well-illuminated, round stars to the edges of large sensors.
With a 650 mm focal length at f/5, the 130SAP collects light quickly for deep-sky work and provides a wide-field scale suited to large nebulae and star fields. The faster optics reduce required exposure times compared with slower astrographs at equivalent resolution.
A 3.7-inch dual-speed rack-and-pinion focuser with 42 mm effective travel gives the precision and travel range needed for heavy camera setups and rotators. The OTA ships with tube rings, a Losmandy-style dovetail, a handle and a rigid CNC tube to keep the imaging train stable.
The rear interfaces listed are M100×1, M68×1, M54×0.75 and M48×0.75. Choose the thread that matches your adapter or compression ring system to achieve correct back focus for your imaging train.
The 130SAP is described as a purpose-built astrophotography telescope rather than a general-purpose optical tube. Its native flat-field layout and large rear interfaces are intended for imaging with medium-format sensors.
The package includes the Sky Rover 130SAP OTA, tube rings, a Losmandy-style dovetail plate, a multi-function handle, dual finder bases and an aluminum carry case.
| Aperture | 130 mm |
| Focal Length | 650 mm |
| Focal Ratio | f/5 |
| Optical Design | Air-spaced quintuplet Petzval APO |
| Image Circle | 55 mm |
| Total Length (dew shield contracted) | 660 mm |
| Total Length (dew shield extended) | 815 mm |
| OTA Weight | 9.1 kg |
| Gross Weight (with tube ring & dovetail) | 11.4 kg |
| Focuser | 3.7" dual-speed rack-and-pinion focuser |
| Focuser Travel | 42 mm effective travel |
| Camera Interface | M100×1 / M68×1 / M54×0.75 / M48×0.75 |
| Optics | Includes dual SD glass, one ED element, and HR glass |