. Karakoram and western Himalaya 1909, an account of the expedition of H. R. H. Prince Luigi Amadeo of Savoy, duke of the Abruzzi. ield of 67° and a vertical oneof 54°. In this way, with six perspectives with a displacement of the optical axisof the camera about the vertical axis of the apparatus of 60° for each of them, apanorama is obtained which comprises the whole horizon, plus a narrow verticalband—a horizontal field of 3° 30 between each one and the next. This verticalband in excess is indispensable, to ascertain the correctness of the panorama, todetermine the distance of the point of v
. Karakoram and western Himalaya 1909, an account of the expedition of H. R. H. Prince Luigi Amadeo of Savoy, duke of the Abruzzi. ield of 67° and a vertical oneof 54°. In this way, with six perspectives with a displacement of the optical axisof the camera about the vertical axis of the apparatus of 60° for each of them, apanorama is obtained which comprises the whole horizon, plus a narrow verticalband—a horizontal field of 3° 30 between each one and the next. This verticalband in excess is indispensable, to ascertain the correctness of the panorama, todetermine the distance of the point of view from the perspectives, and to join thepositives accurately to one another in order to form the panorama. As the verticalfield is D4°, one can measure from the perspectives and vertical angles up to27°. Owing to the enormous differences in level with which the expedition hadto contend, a larger vertical field would have been more advantageous. In thenew apparatus of Comm. Paganini it is possible to adjust the camera so as to have-the larger dimension of the plate (24 cm.) run vertically, giving angles of height or. PAGAXEfl PHOTOGRAMMETRIC APPARATUS,1897 MODEL. 380 Appendix A. depression up to 33° 30. To make the entire circle of the horizon eight plateswould be necessary, with a horizontal displacement of 45° of the optical axis,giving a vertical band of 4° 30 between each two contiguous pictures. Thenew instrument, being capable of reduction to telescope and being furnished withthe vertical circle, can, even without the reversible movement I have described,take the angle of peaks whose summits fall outside the upper margin of the arrangement, too, would have been very useful in the construction of themap. In all the Paganini apparatus the optic axis of the lens is fixed in a directionperpendicular to the plane of the image. The intersection of the above axis withthis plane is marked photographically by the intersection at right angles of twovery thin
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Keywords: ., bookauthorsavoialu, bookcentury1900, bookdecade1910, bookyear1912
