Table of Possible Spacecraft Science Instruments

Instrument	Cost (million $)	Weight (kg)	Power (W)
Direct-Sensing Science Instruments
High-energy particle detector (30 keV - 3 MeV )	1.5	.9	4
Plasma instrument	4.0	5.0	5.0
Dust detector (mass only)	1.0	0.5	1.5
Dust detector (mass & composition)	8.0	8.0	10.0
Magnetometer	0.85	1.0	1.0
Plasma wave detector	4.0	4.0	6.0
Remote-Sensing Science Instruments
Planetary radio astronomy instrument (w/ small antenna)	3.5	4.0	6.0
Imaging Instruments
Multi-spectral imager (~1 degree field of view)	1.6	2.0	1.5 +4.0 filter wheel
Wide-angle camera (~30 degrees field of view)	1.6	1.5	1.5
Polarimeter (Imager Add-on)	+0.5	+1.0	+4.0
Spectro-photometer	3.0	4.0	4.0 +4.0 peak
Spectrometers
Imaging spectrograph	5.0	14.2	8.0
X-ray spectrograph	7.0	18.0	7.0
Gamma-ray spectrograph	6.0	10.0	4.0
Synthetic aperture radar imaging	16.0	40.0	80.0
Altimeters
Laser rangefinder	6.0	5.5	18.0
Radar rangefinder	6.0	15.0	10.0
Accessories for Instruments
Data Processing Unit & Power Supply (1 needed for each 3 instruments)	first 2.5 additional 1.0	3.5	5.0

Direct-Sensing Science Instruments