SAN FRANCISCO — Skybox Imaging Inc., a Mountain View-based satellite imaging company, turned to Fenwick & West for counsel on its acquisition by Google for $500 million.

Launched in 2009, Skybox makes satellites that are smaller and more affordable than traditional models and raised $91 million from investors such as Khosla Ventures, Bessemer Venture Partners, Canaan Partners and Norwest Venture Partners, according to its website.