
TY  - JOUR
A1  - Duncan, RA 
T1  - Photometric Observations of Subvisual Red Auroral Arcs at Middle Latitudes
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1959
VL  - 12
IS  - 2
SP  - 197
EP  - 198
KW  - 
UR  - https://doi.org/10.1071/PH590197 
N2  - A photometer (Roach et aT. 1958) sensitive to the red oxygen emission at 6300 A has been in operation at Oamden, near Sydney (geomagnetic latitude 42°), since July 1958. In this period three bright aurorae have been seen in southern Australia; on July 8-9, September 4-5, and September 25-26. Following the first two the photometer detected a subvisual stable red arc the next night. On the night after the third aurora, observation was prevented by cloud. 
ER  -

