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Twin reflecting and refracting telescopes on observatory mounting, 1885

"Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb for Dr. Isaac Roberts, F.R.S., consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear, spectroscope, additional 20in. mirror and other accessory pieces (one 20-inch disc slightly chipped at outside edge (Note: mounting cradle purchased from M.A.S.S. Tools Ltd 17/1/62 (#58) ScM 4429/3/4

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Brass component from "Twin Equatorial" Telescope

Brass component from "Twin Equatorial" Telescope

1885
"Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

"Twin Equatorial" Telescope

1885
Spectroscope for "Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

Spectroscope for "Twin Equatorial" Telescope

1885
9 metal lens components, one engraved with 'S&AD', and 6 metal circular components for the "Twin Equatorial" Telescope, 1885

Lens Components and Circular Components

1885
Rectangular wooden box with key for the "Twin Equatorial" Telescope, 1885

Rectangular Wooden Box with Key

1885
Wooden box labelled 'Position Alianometer' with two metal clasps. Containing brass tubular object, two brass wheels, and 6 circular components (possibly lenses) for the "Twin Equatorial" Telescope, 1885 Position micrometer with six eyepieces, three dark glasses and one small circular fitting for 7-inch refractor, in box

'Position Alianometer' Wooden Box

1885
Cylindrical object consisting of two parts decreasing in size for the "Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

Cylindrical object consisting of two parts decreasing in size

1885
Curved metal rectangle of pummeled lead, associated with the "Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

Curved metal rectangle of pummeled lead

1885
Thin rectangular piece of pummelled and scratched lead, associated with the "Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

Thin rectangular piece of pummelled and scratched lead

1885
Transit Eyepiece for the "Twin Equatorial" Telescope, 1885

Transit Eyepiece

1885
Empty rectangular wooden box for the "Twin Equatorial" Telescope, 1885

Rectangular Wooden Box

1885
Transit Eyepiece for the "Twin Equatorial" Telescope, 1885

Transit Eyepiece

1885
Brass Tooth Wheel for the "Twin Equatorial" Telescope, 1885

Brass Tooth Wheel

1885
Disc Panel Attachment for Telescope for the "Twin Equatorial" Telescope, 1885

Disc Panel Attachment for Telescope

1885
Miscellaneous flex and electrical fittings for the "Twin Equatorial" Telescope, 1885

Miscellaneous flex and electrical fittings

1885
Brass cylinder, possibly lens for the "Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

Brass cylinder, possibly lens

1885
Metal component consisting of tube affixed to metal plate for the "Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

Metal component consisting of tube affixed to metal plate

1885
1 gold circular wheel component for the "Twin Equatorial" Telescope, 1885

Gold Circular Wheel

1885
Curved Panel Attachment for Telescope for the "Twin Equatorial" Telescope, 1885

Curved Panel Attachment for Telescope

1885
Brass cylinder for the "Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

Brass cylinder

1885
Transit Eyepiece for the "Twin Equatorial" Telescope, 1885

Transit Eyepiece

1885
Barlow lens for 7-inch refractor for the "Twin Equatorial" Telescope, 1885

Barlow Lens for 7-inch Refractor

1885
Transit Eyepiece for the "Twin Equatorial" Telescope, 1885

Transit Eyepiece

1885
Wooden box labelled case for object-glass for 7in refractor(?) for the "Twin Equatorial" Telescope, 1885

Mahogany Box for 7" Refractor Object Glass

1885
Curved metal fitting with prism for the "Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

Curved metal fitting with prism

1885
Cream metal disc with metal cylindrical protrusion in the middle, associated with the "Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

Cream metal disc with metal cylindrical protrusion in the middle

1885
Adapter for the "Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

Adapter

1885
Counter-balance weight for the "Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

Counter-balance weight

1885
Refractor for the "Twin Equatorial" Telescope, 1885. Made by Sir Howard Grubb, consisting of a 20in. Reflecting Telescope and a 7in. Refracting Telescope (by Cooke) mounted together on one equatorial stand. With Grubb electric control gear

Refractor

1885