Subject
- infrared photometry10
- interferometry6
- late-type stars2
- m stars2
- magnetic fields1
- meridian circles31
- metallicity1
- milky way galaxy1
- multiple stars1
- ob stars1
- observational astronomy2
- occultation1
- open star clusters1
- optical astronomy15
- optical observation[remove]128
- peculiar variable stars2
- photographic magnitude3
- photometry17
- pre-main sequence stars3
- proper motions25