PHOTOMETRY OF ASTEROIDS, THE MOON, PLANETS, AND REFLECTION NEBULAE
Abstract
A photometer is described which enables UBV- transfers, asteroid lightcurve photometry, polarimetry, and color photometry. The effective wavelengths for the polarimetry range between 3250 and 9900 Angstroms. Through the use of this instrument and powerful telescoped it was found that the polarization on most objects is strongly wavelength dependent. A steep increase toward the ultraviolet was found for lunar regions, for Mars, for Mercury, and for Venus. A maximum in the amount of plane polarization near the visual, with a sharp decrease toward longer and a slow decrease toward shorter wavelengths, was found for the interstellar polarization. A steep increase of the polarization toward the infrared was found on reflection nebulae. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1961
- Accession Number
- AD0259482
Entities
People
- Thomas Gehrels
Organizations
- Indiana University Bloomington