Europa Imaging System
Operator | NASA |
---|---|
Instrument type | cameras |
Function | 3D topography |
Mission duration | Cruise: 3-6 years Science phase: ≥ 3 years |
Properties | |
Resolution | 0.5 m |
Spectral band | visible spectrum |
Host spacecraft | |
Spacecraft | Europa Clipper |
Operator | NASA |
Launch date | ≈ 2025[1] |
Rocket | Falcon Heavy[2] |
Launch site | Kennedy Space Center |
TheEuropa Imaging System(EIS) is avisible spectrumwide and narrow angle camera on board the plannedEuropa Clippermission that will map most ofEuropaat 50 m (160 ft) resolution, and will provide images of selected surface areas at up to 0.5 m resolution.
EIS will provide comprehensive data sets, includingcartographicand three-dimensional geologic maps, regional and high-resolution digitaltopography,geographic information systemdata products, color andphotometricdata products, ageodetic control networktied toradar altimetry,and a database of plume-search observations.[3]
Overview
[edit]![](https://upload.wikimedia.org/wikipedia/commons/thumb/6/65/Europa_Imaging_System_Optical_Telescope_Assembly_2.jpg/220px-Europa_Imaging_System_Optical_Telescope_Assembly_2.jpg)
EIS combines a narrow-angle camera (NAC) and a wide-angle camera (WAC) designed to address the reconnaissance goals. Both cameras operate on thevisible spectrum(390 to 700 nm) and make use ofpush broom scannersfor obtaining images withstereoscopicsensors.
The Principal investigator isElizabeth Turtle.
Objectives
[edit]The objectives of the EIS instrument are:[3]
- Characterize the ice shell by determining its thickness and correlating surface features with subsurface structures detected by ice penetrating radar.
- Constrain formation processes of surface features and the potential for current activity by characterizing endogenic structures, surface units, global cross-cutting relationships, and relationships to Europa's subsurface structure, and by searching for evidence of recent activity, including potential plumes.
- Characterize scientifically compelling landing sites and hazards by determining the nature of the surface at scales relevant to a potentialEuropa Lander.
General specifications
[edit]![](https://upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Europa_Imaging_System_Narrow_Angle_Camera_2.jpg/220px-Europa_Imaging_System_Narrow_Angle_Camera_2.jpg)
![](https://upload.wikimedia.org/wikipedia/commons/thumb/9/97/Europa_Imaging_System_Wide-Angle_Camera_%28cropped%29.jpg/220px-Europa_Imaging_System_Wide-Angle_Camera_%28cropped%29.jpg)
- Narrow angle camera (NAC)
The NAC provides very high-resolution, stereo reconnaissance, generating 2 km wide swaths at 0.5 m pixel scale from 50 km altitude. NAC observations also include: near-global (>95%) mapping of Europa at ≤50 m pixel scale; regional and high-resolution stereo imaging at <1 m/pixel, and high phase angle observations for plume searches.[3][4]The NAC will also perform high-phase-angle observations to search for potential plumes, even when the spacecraft is distant from Europa.[4]
- Wide angle camera (WAC)
The WAC will acquire stereo reconnaissance, generating digital topographic models with 32 m spatial scale and 4 m vertical precision from 50 km altitude.[3][4]
References
[edit]- ^Europa Clipper passes key review.Jeff Foust,Space News.22 August 2019.
- ^"NASA to use commercial launch vehicle for Europa Clipper".11 February 2021.
- ^abcdThe Europa Imaging System (EIS): High-Resolution, 3-D Insight into Europa's Geology, Ice Shell, and Potential for Current Activity.Turtle, E. P.; McEwen, A. S.; Collins, G. C.; Fletcher, L. N.; Hansen, C. J.; Hayes, A.; Hurford, T., Jr.; Kirk, R. L.; Barr, A.; Nimmo, F.; Patterson, G.; Quick, L. C.; Soderblom, J. M.; Thomas, N.American Geophysical Union,Fall Meeting 2014, abstract #P13E-03. December 2014.
- ^abcThe Europa Imaging System (EIS): High-Resolution Imaging and Topography to Investigate Europa's Geology, Ice Shell, and Potential for Current Activity(PDF). Turtle, E. P.; McEwen, A. S.; Collins, G. C.; Fletcher, L.; Hansen, C. J.; Hayes, A. G.; Hurford, T. A.; Kirk, R. L.; Barr Mlinar, A. C.; Nimmo, F.; Patterson, G. W.; Quick, L. C.; Soderblom, J. M.; Thomas, N.; Ernst, C. M.47th Lunar and Planetary Science Conference,held March 21-25, 2016 at The Woodlands, Texas. LPI Contribution No. 1903, p.1626.