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Subject
- photometry40
- galaxies34
- observational astronomy15
- infrared photometry13
- cosmology9
- galactic and extragalactic astronomy9
- nebulae9
- optical astronomy9
- planets9
- solar system astronomy9
- stars9
- stellar astronomy9
- ultraviolet photometry8
- redshifted7
- globular star clusters6
- surveys6
- variable stars6
- galaxy classification systems5
- wide-band photometry5
- catalogs4