Targeted observations during the third MESSENGER flyby of Mercury

Targeted observations during the third MESSENGER flyby of Mercury
Targeted observations during the third MESSENGER flyby of Mercury

Because the geometry of flyby 3 was so similar to flyby 2, MESSENGER scientists were able to use flyby 2 observations to plan a series of detailed observations just after closest approach on flyby 3. This map shows how the MASCS spectrometer and wide-angle camera will track across the surface to examine nine chosen interesting locations:
A: An unnamed crater with unusual bright material on its floor.
B: An unnamed crater with a set of young ejecta rays that are light blue in the enhanced-color view.
C (1 & 2): Crater Lermontov. The bright yellowish color in the enhanced-color image and the irregularly shaped depressions on its floor may be evidence of past explosive volcanic activity.
D: North of crater Homer. An area with an interesting mix of both light blue ejecta and bright orange materials.
E: Near crater Titian. Enhanced-color images show a region of comparatively deep blue material that is dark and of a different composition than the majority of Mercury's surface.
F (1 & 2): Common plains material. This target resembles a type of material that covers much of Mercury.
G: An unnamed crater with an intriguing bright yellow-orange color in enhanced-color views.
H: Ray material from a spectacular rayed crater in Mercury's north. The ray material appears bright blue in enhanced color.
I: A common area of Mercury's surface that will be viewed by MASCS very obliquely.

NASA / JHUAPL / CIW

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