Loading...
Please wait, while we are loading the content...
Similar Documents
High resolution imaging of the venus night side using a rockwell 128x128 hgcdte array
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Allen, D. Sinton, W. Hodapp, K.-W. Ragent, B. |
| Copyright Year | 1989 |
| Description | The University of Hawaii operates an infrared camera with a 128x128 HgCdTe detector array on loan from JPL's High Resolution Imaging Spectrometer (HIRIS) project. The characteristics of this camera system are discussed. The infrared camera was used to obtain images of the night side of Venus prior to and after inferior conjunction in 1988. The images confirm Allen and Crawford's (1984) discovery of bright features on the dark hemisphere of Venus visible in the H and K bands. Our images of these features are the best obtained to date. Researchers derive a pseudo rotation period of 6.5 days for these features and 1.74 microns brightness temperatures between 425 K and 480 K. The features are produced by nonuniform absorption in the middle cloud layer (47 to 57 Km altitude) of thermal radiation from the lower Venus atmosphere (20 to 30 Km altitude). A more detailed analysis of the data is in progress. |
| File Size | 291977 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19900012014 |
| Archival Resource Key | ark:/13960/t42r8qz49 |
| Language | English |
| Publisher Date | 1989-10-01 |
| Access Restriction | Open |
| Subject Keyword | Astronomy High Resolution Venus Atmosphere Night Imaging Techniques Rotation Planetary Radiation Mercury Cadmium Tellurides Cloud Cover Venus Planet Thermal Radiation Infrared Spectrometers Cameras Infrared Radiation Brightness Temperature Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
