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Fraser
2006-Nov-30, 05:40 AM
If you want to get a good view of something, you'll want a big telescope, or you want to get close. NASA has decided to both, equipping its new Mars Reconnaissance Orbiter with the largest spacecraft telescope ever built, and then flying it closer to Mars than any previous spacecraft. This telescope is called the High Resolution Imaging Science Experiment, and returning the most detailed images ever seen of the Martian surface. Dr. Alfred McEwen from the University of Arizona is the Principal Investigator on the HiRise instrument, and he joins me from Tuscon Arizona.

Read the full blog entry (http://www.universetoday.com/2006/11/29/podcast-hirise-view-of-mars/)

BillG
2006-Nov-30, 06:03 PM
While the article claims that this is "the largest spacecraft telescope ever built," I think it'd be better to say that it's the largest telescope ever mounted on an interplanetary probe. This thing has an 0.5 meter primary mirror, which is certainly much smaller than the 2.4 meter primary mirror of the Hubble Space Telescope.

Fraser
2006-Dec-01, 04:22 AM
Yeah, I guess I wasn't really considering Hubble to be a spacecraft. Interplanetary spacecraft is a better term for it.