First Test Observations and Measured Parameters of the SMTO

First tests of the coronagraphic device of MIRI/JWST

First tests on the astrometric performance of the new PDS1010G at Hamburg Observatory

First XMM Results on Clusters of Galaxies

First year's results and field experience with the latest JILA absolute gravimeter

First-order feasibility analysis of a space suit radiator concept based on estimation of water mass sublimation using Apollo mission data

First-Order Test of WFC3/IR Imaging: from Phase 2 Proposal to MultiDrizzle Product

First-principles modeling of geomagnetically induced currents from the upstream solar wind to the surface of the Earth

FIRST/Planck program: current status

FIS: far-infrared surveyor on board ASTRO-F (IRIS)

Fiscal year 1976 progress report on a feasibility study evaluating the use of surface penetrators for planetary exploration

Fission or fusion for Mars missions - Expectations and challenges

FITS Tile Compression in the NOAO DMS

Five-lens corrector for Cassegrain-form telescopes

Fizeau interferometry from space: a challenging frontier in global astrometry

Flat structure cooled detector assembly

Flattening Earth acceleration in atomic fountains

Flexible configuration for the Lyman FUSE fine-error sensor

Flight Calibration and Operations of the Swift X-ray Telescope (XRT)

Flight Calibration of the Galaxy Evolution Explorer (GALEX)