Details of exhibit
- Exhibition:
- 1915 Sixtieth Annual Exhibition of the Royal Photographic Society of Great Britain
- Exhibit title:
- The Zodiacal Light in Pices and Aries, February 12, 1915
- Exhibitor:
- A. E. Douglas
- Section:
- III. Scientific and Technical Photographs, &c.
- Group Title:
- Zodiacal Light and Counterglow and the Photography of Large Areas and Faint Contrasts
- Exhibit No.:
- 185
- Exhibit No. 2:
- 1
- Description:
- Points of scientific interest:-
1. Photography of large, faint areas whose maximum light is of the order of one-ten millionth of a candle power per square degree.
2. Elimination of the concentration of light in the centre of a plate in the ordinary lens and flat plate camera.
3. A practical method of magnifying contrasts, necessary in the photography of large faint areas and of use in photometry. - Exhibit type:
- Photographic equipment and supplies
- Process:
- [Not Listed] ()
- Award:
- none
