instruments:ceilo:ceilometer
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instruments:ceilo:ceilometer [2014/11/25 15:52] – [Specifications] sandra | instruments:ceilo:ceilometer [2022/12/19 17:17] (current) – [History] jan | ||
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====== Ceilometer CT25K ====== | ====== Ceilometer CT25K ====== | ||
- | //Mentor: [[http:// | + | |
+ | //Mentor: [[http:// | ||
===== Principle ===== | ===== Principle ===== | ||
- | A ceilometer measures the cloud base height, | + | A ceilometer measures the cloud base height, |
===== Instrument ===== | ===== Instrument ===== | ||
- | {{: | + | {{: |
Current setup at [[http:// | Current setup at [[http:// | ||
===== Data ===== | ===== Data ===== | ||
- | * If you are interested in receiving data please contact the instrument mentor: // [[http:// | + | * If you are interested in receiving data please contact the instrument mentor: // [[http:// |
- | * [[http://gop.meteo.uni-koeln.de/ | + | * [[http://atmos.meteo.uni-koeln.de/ |
- | [[http://gop.meteo.uni-koeln.de/ | + | [[http://atmos.meteo.uni-koeln.de/ |
< | < | ||
- | <a href=" | + | <a href=" |
- | <img src=" | + | <img src=" |
</a> click to enlarge | </a> click to enlarge | ||
</ | </ | ||
Line 27: | Line 28: | ||
===== History ==== | ===== History ==== | ||
^ Period | ^ Period | ||
- | | 10/2010 - today | [[http:// | + | | 11/10/2010 - today | [[http:// |
- | | 2007 - 2010 | [[http:// | + | | 09/2007 - 05/10/2010 | [[http:// |
- | | winter months 2008/2009 | [[http:// | + | | winter months 2008/2009 | [[http:// |
| 2006 - 2007 | Nangatchori, | | 2006 - 2007 | Nangatchori, | ||
Line 43: | Line 44: | ||
| Average Power | 8.9 mW | | | Average Power | 8.9 mW | | ||
| Pulse Width | 100 ns | | | Pulse Width | 100 ns | | ||
- | | Repetition Rate: | 5.57 kHz | | + | | Pulse Repetition Rate (PRR): | 5.57 kHz | |
- | | Number of pulses: | 65, | + | | Number of pulses |
+ | | Averaging time: | 11.7sec (=PQTY/PRR) | | ||
+ | | Time resolution | 15sec ((=> 3.3sec for processing and data transmission)) | | ||
| Range resolution | 50ft = 30m (see [[internal: | | Range resolution | 50ft = 30m (see [[internal: | ||
- | | Time resolution | 15sec | | ||
| Range | 200...25, | | Range | 200...25, | ||
| Laser Divergence | ± 0.53×0.75 mrad (edge×diagonal((the laser is a diode with square shape. The beam thus a pyramid with different opening angles for neighbouring and opposite edges))) | | | Laser Divergence | ± 0.53×0.75 mrad (edge×diagonal((the laser is a diode with square shape. The beam thus a pyramid with different opening angles for neighbouring and opposite edges))) | | ||
| Field-of-View Divergence | ± 0.66 mrad | | | Field-of-View Divergence | ± 0.66 mrad | | ||
| Telescope diameter | 145mm | | | Telescope diameter | 145mm | | ||
- | | Tilting angle | 5° | | + | | Tilting angle | 2.5° as of Aug 21 2015 (7° before...) |
| Size | 760 x 280 x 245 mm | | | Size | 760 x 280 x 245 mm | | ||
| Power Consumption | 365 W | | | Power Consumption | 365 W | | ||
| Weight | | Weight | ||
- | | Manufaturer | + | | Manufacturer |
instruments/ceilo/ceilometer.1416927172.txt.gz · Last modified: 2016/04/07 19:53 (external edit)