Oval shaped secondary speculum mirror with cover

Made:
1845-1850 in Republic of Ireland, Leinster and Birr
maker:
William Parsons

Oval shaped secondary speculum mirror with cover, from the 6-foot Rosse telescope

Details

Category:
Astronomy
Object Number:
1914-690
Materials:
speculum metal and brass
Measurements:
overall: 120 x 320 x 240 mm
type:
components, flat mirrors, metal mirrors and astronomical instruments
credit:
Lord Rosse (5th Earl)

Parts

Cover for speculum mirror

Cover for speculum mirror

Metal cover for oval shaped secondary speculum mirror from the 6-foot Rosse telescope

Measurements:
overall: 100 x 330 x 240 mm
Materials:
iron and complete
Object Number:
1914-690 Pt2
type:
components , flat mirrors and metal mirrors