تقرير
A balloon-borne cryogenically cooled filter radiometer
| العنوان: | A balloon-borne cryogenically cooled filter radiometer |
|---|---|
| المؤلفون: | Debell, A. G |
| المصدر: | NASA. Ames Res. Center Telescope Systems for Balloon-Borne Res.. |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 1974. |
| سنة النشر: | 1974 |
| مصطلحات موضوعية: | Instrumentation And Photography |
| الوصف: | The development of a cryogenically cooled filter radiometer for use with high altitude balloons is discussed. The radiometer has features which include the options for remote operation of two filter wheels each containing six filters at helium temperature and a cryogenic rotary chopper which may be run at 200 cycles per second or positioned open or closed, and a remotely operable chopped blackbody calibration source. The radiometer contains a ten inch diameter liquid nitrogen cooled Cassegrain telescope with nine individually filtered field stops in the focal plane. The telescope is mounted on a two-axis servo operated gimbal which is used to make sky scans under the control of an onboard programmer. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| Relation: | Telescope Systems for Balloon-Borne Research |
| URL الوصول: | https://ntrs.nasa.gov/citations/19750004673 |
| رقم الأكسشن: | edsnas.19750004673 |
| قاعدة البيانات: | NASA Technical Reports |
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