astronomy

Thorp's replica of a ...

A diffraction grating is a plate engraved with a large number of fine parallel lines ... continue

Source: Powerhouse Museum

A spherometer in a ...

Spherometers are instruments used to take precise measurements of the radius and curvature of the ... continue

Source: Powerhouse Museum

Microscope plate reader in ...

This microscope plate reader was used at Sydney Observatory in the late 19th century to ... continue

Source: Powerhouse Museum

Transit theodolite

This transit theodolite was made by Troughton and Simms, well-known scientific instrument makers of the ... continue

Source: Powerhouse Museum

Transit theodolite

Theodolites have been used to measure horizontal and vertical angles by surveyors since the 1500s ... continue

Source: Powerhouse Museum

A scaleometer in a ...

A scaleometer is used to take measurements that are extremely small. This scaleometer was used ... continue

Source: Powerhouse Museum

Portable tape chronograph made ...

A chronograph is an instrument for the graphical recording of events and the time at ... continue

Source: Powerhouse Museum

Photographic plate measuring machine

"The important place which photography has now assumed as a means of promoting astronomical discovery ... continue

Source: Powerhouse Museum

Optical instrument for measurement ...

In 1887 astronomers from around the world embarked on a massive new enterprise; known as ... continue

Source: Powerhouse Museum

Optical instrument for measurement ...

In 1887 astronomers from around the world embarked a massive new enterprise; known as the ... continue

Source: Powerhouse Museum

Turret clock drive by ...

"Mr. Tornaghi for the Sydney Observatory has also constructed numbers of tide-gauges, standard barometers, self-registering ... continue

Source: Powerhouse Museum

6-inch portrait lens made ...

In 1882 David Gill, astronomer at the Royal Observatory at the Cape of Good Hope ... continue

Source: Powerhouse Museum

Merz & Son 7 ...

In 1860 Reverend William Scott, the first astronomer appointed to the new Sydney Observatory, ordered ... continue

Source: Powerhouse Museum

Electric switch clock

A switch clock is a timer. This one was probably used as part of the ... continue

Source: Powerhouse Museum

Pivot testing apparatus used ...

This pivot testing apparatus was used in conjunction with the six inch transit telescope (H9899 ... continue

Source: Powerhouse Museum

Photoheliograph telescope, made by ...

"I do not suggest that photographic observations should displace eye observations; on the contrary, I ... continue

Source: Powerhouse Museum

Janssen's photographic apparatus made ...

In 1874 a telescope (H10211) and this photographic apparatus were brought to Australia especially to ... continue

Source: Powerhouse Museum

Parts of astrographic telescope ...

"The important place which photography has now assumed as a means of promoting astronomical discovery ... continue

Source: Powerhouse Museum

Refractor telescope and tripod.

There are two main types of telescopes. One uses a curved reflecting mirror to capture ... continue

Source: Powerhouse Museum

3 3/6" refractor telescope.

There are two main types of telescopes. One uses a curved reflecting mirror to capture ... continue

Source: Powerhouse Museum