Final Calibration of the WFPC2 Emission-Line Filters
JWST observations of the Ring Nebula (NGC 6720): I. Imaging of the rings, globules, and arcs
Tangential Motions and Spectroscopy Within NGC 6720, the Ring Nebula
Instrument
WFPC2, WFPC2/PC, WFPC2/WFC
Temporal Coverage
2008-04-22T21:56:17Z/2008-05-06T20:40:37Z
Version
1.0
Mission Description
Launched in 1990, the NASA/ESA Hubble Space Telescope remains the premier UV and visible light telescope in orbit. With well over 1.6 million observations from 10 different scientific instruments, the ESA Hubble Science Archive is a treasure trove of astronomical data to be exploited.
European Space Agency, ODell et al., 2009, 'Determination of Angular Expansion Velocities in the Ring Nebula', 1.0, European Space Agency, https://doi.org/10.5270/esa-8442ekh