Glossary - Royal Astronomical Society of Canada
... said of two planets that, as viewed from Earth, approach near one another but without attaining the same right ascension ...
... said of two planets that, as viewed from Earth, approach near one another but without attaining the same right ascension ...
navigation - Claire Lambe Home
... knowing the position that the stars reach above the Earth at a certain time - requiring an accurate means of meassuring time. Now precise time signals are brooadcast by radio. Latitude is determined by taking angle sights of certain pole stars or the angle of the Sun above the horizon. A grid framew ...
... knowing the position that the stars reach above the Earth at a certain time - requiring an accurate means of meassuring time. Now precise time signals are brooadcast by radio. Latitude is determined by taking angle sights of certain pole stars or the angle of the Sun above the horizon. A grid framew ...
The standard error of the mean for pointings would be
... standard deviations and the numbers of observations averaged. They are in no way dependent on the values or spreads of the actual averaged observations! If you do not average observations (i.e. you enter every repeated measurement), simply use the manufacturer’s standard deviations as your default s ...
... standard deviations and the numbers of observations averaged. They are in no way dependent on the values or spreads of the actual averaged observations! If you do not average observations (i.e. you enter every repeated measurement), simply use the manufacturer’s standard deviations as your default s ...
JMAPS
... Assuming the proper mechanical, thermal and electronic interface, it can then serve as an extremely accurate star sensor. If flown after 2016, it will also be able to take advantage of the JMAPS star catalog. Based on extensive cost modeling using both the NASA Instrument Model (developed by JPL) an ...
... Assuming the proper mechanical, thermal and electronic interface, it can then serve as an extremely accurate star sensor. If flown after 2016, it will also be able to take advantage of the JMAPS star catalog. Based on extensive cost modeling using both the NASA Instrument Model (developed by JPL) an ...
SBA_2 - Armagh Observatory
... sufficient to guarantee the reliability of our measurements. In other words, once an instrument has been successfully commissioned and offered to the community, we all tend to believe that photon-noise is the only source of error, and that error bars scale as N-1/2. This may not be quite true. ...
... sufficient to guarantee the reliability of our measurements. In other words, once an instrument has been successfully commissioned and offered to the community, we all tend to believe that photon-noise is the only source of error, and that error bars scale as N-1/2. This may not be quite true. ...