Subject
- ob-stars3
- astronomical-simulations2
- astrophotography2
- blazars2
- broad-band-photometry2
- galaxy-luminosities2
- galaxy-planes2
- objective prism2
- optical spectroscopy2
- post-asymptotic-giant-branch-stars2
- radio-galaxies2
- spectropolarimetry2
- stellar-atmospheres2
- time-domain-astronomy2
- variable-stars2
- active-galaxies1
- astrometry1
- digital images1
- disk-galaxies1
- dwarf-elliptical-galaxies1