Monthly Notices of the Royal Astronomical Society, Volume 68; Volumes 1907-1908Priestley and Weale, 1908 Includes lists of additions to the society's library, usually separately paged. |
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Page 84
... stars on a mean of Greenwich , Paris , and Toulouse . The three observatories were given equal weight . A photo- graphic place depending on 1 or 2 plates was given weight 1 ; on 3 to 6 plates , weight 2 ; and on 7 or more , weight 3 ...
... stars on a mean of Greenwich , Paris , and Toulouse . The three observatories were given equal weight . A photo- graphic place depending on 1 or 2 plates was given weight 1 ; on 3 to 6 plates , weight 2 ; and on 7 or more , weight 3 ...
Page 87
... star place made at one observatory would depend on the same set of repère stars , and be on the same part of the plate , whereas the same star would be determined elsewhere on a different centre . After some trial it appeared that ...
... star place made at one observatory would depend on the same set of repère stars , and be on the same part of the plate , whereas the same star would be determined elsewhere on a different centre . After some trial it appeared that ...
Page 96
... stars along a good part of the planet's path . These star places have been already com- municated to Professor Perrine . There are thin places in the catalogue , due to bad weather in Europe while it was fine at Mount Hamilton ; these ...
... stars along a good part of the planet's path . These star places have been already com- municated to Professor Perrine . There are thin places in the catalogue , due to bad weather in Europe while it was fine at Mount Hamilton ; these ...
Page 97
... stars used in these comparisons , and desired that they should be measured on the photographs whenever possible . As a result of this , the standard catalogue contains good places of a very large majority of these stars , and provides ...
... stars used in these comparisons , and desired that they should be measured on the photographs whenever possible . As a result of this , the standard catalogue contains good places of a very large majority of these stars , and provides ...
Page 104
... stars of Groombridge's catalogue for the pur- pose of comparing the distances of the two star - drifts , with which ... stars is well known . It depends on determining the apparent angular displacement corresponding to a known linear ...
... stars of Groombridge's catalogue for the pur- pose of comparing the distances of the two star - drifts , with which ... stars is well known . It depends on determining the apparent angular displacement corresponding to a known linear ...
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Common terms and phrases
angle appear Astrographic axis bright brighter Cape Catalogue centre coefficient colour column comet comparison stars computed corrections correlation curve cyanogen David Gill deduced determination distance Double Stars drift E. E. Barnard Earth eclipse epoch equation equatorial faint formula give given Greenwich groups heliometer instrument Julian Day Jupiter latitude lens Lick Observatory limb lines longitude magnitude Max Wolf mean measures meridian method Monthly Notices Moon nebula nucleus number of stars observations obtained orbit outer condensation paper parallax Paris perihelion perihelion passage period perturbations photographs planet plates position present Professor proper motion reduced reflector refraction refractor region right ascension ring Royal Observatory satellite Saturn seen Sept solar spectra spectral class spectroheliograph spectroscope spectrum spot stellar sun-spot Sun's surface Table telescope tion variable Yerkes Observatory zone ΙΟ