File:The Composition of sea-water - comparative and descriptive oceanography (1963) (20050102274).jpg

Title: The Composition of sea-water : comparative and descriptive oceanography
Identifier: compositionofsea00hill (find matches)
Year: 1963 (1960s)
Authors: Hill, M. N. (Maurice Neville), 1919-
Subjects: Seawater -- Composition
Publisher: New York : Interscience Pub.
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
SECT. 3) APPLICATIONS OF THE GYROPENDULUM 335 the altitude of the polar axis were effected by adjustments of the latitude slow- motion screw. The accompanying photographs of the star clouds in the Crux- Argo (Fig. 9). the Sagittarius-Scorpius regions (Fig. 10) and mosaic of the Milky Way (Fig. 11) were obtained by these methods. The moon, sun and brighter planets have also been photographed on a scale of 1 cm/deg. The applications of the meridian gyro to other problems in astronomical and meterological photography and theodolite measurements from shipboard are numerous and may include direct photography of solar eclipses as well as their associated flash and coronal spectra, records of meteor and satellite trajectories,
Text Appearing After Image:
Fig. 9. Milky Way in the Crux-Argo region photographed on 19 March, 1961, from R.V Chain while under way at 13 knots in lat. 00° 10' South and long. 18° 44' West. During the 30 min exposure (0130 to 0200 G.M.T.) with a Zeiss Biotar of 50 mm focal length, working at//2 on Tri-X film, compensations for roll, pitch and yaw were provided by the Sperry Mark 19 meridian gyrocompass. Corrections for the ship's motion in latitude and longitude as well as for the earth's rotation were provided by hand guiding on Spica. North is at the top. The Southern Cross and "coal sack" appear to the left of center. and whole-sky time-lapse auroral or cloud photographs, to name a few; all with the option of placing the observing station wherever geographic and climatic conditions are most favorable. It is worth noting that in the vicinity of the magnetic equator the absence of aurora and air glow is marked, and, being far from the smoke and scattered light of populated regions on land, the night sky at sea is so black that faint celestial objects are often unexpectedly easy to observe.

Note About Images