1. Worldview II Launched October 8, 2009 Altitude: 770 km
Vandenberg Air Force Base, California
Altitude: 770 km
Swath width: 16.4 km at nadir
Radiometric resolution: 11-bit per pixel
Max viewing angle nominally +/- 45° off-nadir (higher angles available)
Orbit:
Sun-synchronous
10:30 am descending node, 100 minute period
Time-frame:
1.1 days at 1 m
3.7 days at 20° off-nadir

2. Sensor Panchromatic Multispectral:
46 cm at nadir
52 cm at 20° off-nadir
Multispectral:
4 standard colors: blue, green, red, near-IR1
4 new colors: coastal blue, yellow, red edge, near-IR2
1.84 m at nadir
2.08 m at 20° off-nadir
Imagery resampled to 50 cm and 2 m resolutions for non-government users

3. Mission life: 7.25 years
No issues so far; equipped with:
Control moment gyroscope, and selectable Time Delay Integration (TDI) levels
A wide variety of images available for free
Actual cost of imagery not listed on site
Official website:
Usage in 3 main areas of remote sensing:
Vegetative analysis
Feature extraction
Bathymetry

4. Sydney Opera house, Australia; captured October 20, 2009 (12 days after launch)

5. Mudslide in Zhugqu, China; captured August 10, 2010