We are currently designing our Viewpoint imaging satellite with many of the structural and optical components built using our omni-material 3D printer. The Viewpoint satellite is multi-purpose, with quick and easy image tasking. It will address different markets, including Earth observation, Space Domain Awareness, and astronomy, utilizing all parts of its low Earth orbit. The 50 centimeter diameter primary mirror, advanced optics, and low orbital height will provide a native resolution of 40 cm both for color and panchromatic Earth imaging. |
Overall Specifications:
- 250 kg smallsat
- 320 km orbit
- Electric propulsion
- 300W solar panels
- 6 year lifetime
- Passive cold plate
- Multi-core computer with ECC DRAM and FPGA
- Two 1 TB NVMe solid state drives
- 5 Gbps pixel bus
- Space selfie screen and solar panel camera
Communications
- Globalstar radios for command and telemetry
- Optical uplink and downlink, multiple passes per day
- Optical error corrected data transfers at 100 Mb/s
- Custom optical ground stations
Aiming/stabilization
- 4 momentum wheels
- 3 magnetic torquers
- 3 Star cameras
- GNSS receiver for GPS, Glonass, and Galileo
Optical Specifications
- Modified Dall-Kirkham telescope
- 20" (50 cm) Zerodur primary mirror
- 152 megapixel visible/NIR monochrome camera with stellar guide chips and sub-pixel imager nanopositioners, 0.17 arcsec IFOV
- 152 megapixel camera with on-chip Bayer pattern color filters, 0.17 arcsec IFOV
- 37 megapixel UV/visible/NIR high sensitivity camera with stellar guide chips and sub-pixel imager nanopositioners, 250nm to 900nm, 0.54 arcsec IFOV
- 150 band hyper-spectral imager (limited to 39 bands for the export version satellite), 470nm to 900nm
- Native 40 cm GSD pan and multispectral at 320 km orbital height
24 Position Filter Wheel
Five stripe B, G, R, Red edge, I |
polarizer |
N-II and Sloan r' |
H-alpha |
S-II and Sloan i' |
O-III |
UV 200-300 and Sloan u' |
H-beta |
Coastal Blue and Sloan g' |
Sloan z' |
Three stripe SWIR |
grism |