Janssen’s photographic apparatus made by J H Dallmeyer

Made by Dallmeyer, J H in London, England, c. 1874.

In 1874 a telescope (H10211) and this photographic apparatus were brought to Australia especially to photograph the Transit of Venus. They are the same as those sent to five other observatories around the world that were part of the British Royal Observatory Transit of Venus program. The others went to Honolulu, Mokkatam, Rodriguez, Kereguelen and Burnham.

This photographic apparatus was made by J. H. Dallmeyer based on a unique design by Janssen modified by de la Rue in Britain and took 6.5 ...


Janssen's photographic apparatus consisting of a varnished asymmetrically shaped, wooden casing with metal fittings and aperture covered with darkened glass. The instrument was used to take multiple (60) photographs on one large circular photographic plate in a short interval of time.


100 mm


The photographic apparatus was made by J H Dalleyer in London, England between 1869 and 1879.
Dallmeyer, J H c. 1874


The apparatus was used with the photoheliograph for the Transit of Venus observations at Woodford, New South Wales, Australia in December 1874.
Sydney Observatory 1874

Cite this Object

Janssen's photographic apparatus made by J H Dallmeyer 2017, Museum of Applied Arts & Sciences, accessed 18 November 2017, <https://ma.as/231210>
{{cite web |url=https://ma.as/231210 |title=Janssen's photographic apparatus made by J H Dallmeyer |author=Museum of Applied Arts & Sciences |access-date=18 November 2017 |publisher=Museum of Applied Arts & Sciences, Australia}}
This object is currently on display at the Sydney Observatory.

This object record is currently incomplete. Other information may exist in a non-digital form. The Museum continues to update and add new research to collection records.

Know more about this object?
Have a question about this object?