Atlanta tri-weekly journal. [volume] (Atlanta, Ga.) 1920-19??, 1923-09-06
HOW TO WATCH THE ECLIPSE-By Science Service

To get the most effective and interesting
photograph of the partial eclipse, a series of
exposures should be made at intervals of say
five minutes covering the duration of the
eclipse. For this the camera should be placed
on a tripod, the legs of which are arranged
so that the camera points upward sufficiently
to show the image of the sun in the upper
right corner of the kodak finder. All prep
arations should, of course, be made before
the eclipse starts.
In localities where the eclipse starts with
the sun low enough in the sky, it would add
to the pictorial value of the picture to in
clude the horizon line in the picture area.
AS to exposure, it is suggested that the
smallest stop be used in the lens and that
the shutter be set for the fastest speed. Then
make one exposure every five minutes with
out turning the film for the duration Of the
eclipse. A single exposure can, of course be
made of the eclipse, in which case the CAM
era can be held in the hands, but success
sion of images at equal distances apart Will
make a more effective showing
A color filter would add in preventing
overexposure if the day is unusually clear,
and the atmosphere free from haze. No
change should be made, however, in t stop
and shutter combination mentioned above,
even if q very deep colored 1ilter,-such as the
&C." is used on the lens. In place of the
filter a piece of film that has been flashed
to light and developed to q good density
could be used in front of the camera lens to
prevent OvereXposure. 1t is also recommend
ed, that if the sun is not obsCured by clouds,
that the time Of development be reduced to
one-half of that which would be given nor
mally
Where the eclipse is total, however, the
camera should be placed on a tripod and a
succession of exposures of 2, 5, 10, 20, 40
and 60 seconds made, the film being wound
a complete turn of the winding key between
g
not be used in front of the lens when photo
graphing a total eclipse. Such a series of
exposures just mentioned should give inter
esting studies Of the eclipse and the sun S
corona. The corona can neither be seen nor
phot ographed except where the eclipse is
total. A record could be obtained with a
pfn-hoFe camera, but to make a really sue
cessful camera this sort requires little
! knowledge of photography and would nee S.
state some previous experimenting to eX-
posture time.
The common box camera equipped with
| l2ns and shU4.-- will make excellent pic
lures. Motion picture cameras could be
| used, exposing at intervals several 'eet OF
| film during the partial eclipse and cranldng
continuously during the several minutes OF
| totality. An amateur motion picture camera
like the new C'ne-Kodak, could be used.
FqND EARL HUMAN BONES. IN EGYPT
LONDON-F0ssiIi.> human bones dis
! covered in Egypt by DR.. D. E. Derry anC
reported to the Royal Anthropological insti
| tute here are believed by scientists to be new
! evidence for the evolution of the human
! race.
This is the first time that fossilized human
| bones have been obtained from Egypt, and
due to their condition and surroundings, DR..
Derry believes them to be of Pleistocene or
Glacial age the period of time that preceded
| the present.