Filter in a brass mount

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ID:	AST0960.11
Type:	Filter in a brass mount
Display location:	Not on display
Creator:	Herschel, William
Date made:	1770-1790; 1770-90
Credit:	National Maritime Museum, Greenwich, London, Herschel Collection
Measurements:	Overall: 6 mm; Diameter: 37 mm
Parts:	7-foot Newtonian (reflector) telescope (Telescope) Newtonian primary mirror (AST0960.1) Eyepiece (AST0960.2) Eyepiece (AST0960.3) Eyepiece (AST0960.4) Eyepiece (AST0960.5) Eyepiece (AST0960.6) Newtonian secondary mirror (AST0960.7) Cover for mirror (AST0960.8) Filter in a brass mount (AST0960.9) Extension tube (AST0960.10) Filter in a brass mount (AST0960.11) Reflector eyepiece (AST0960.12) Reflector eyepiece (AST0960.13) Screwdriver (AST0960.14) Screwdriver (AST0960.15) File (AST0960.16) Knob (AST0960.17) Mirror (AST0960.18) Nuts and bolts (AST0960.19) Telescope tube (AST0960.20) Telescope stand (AST0960.21) Mirror case lid (AST0960.22) Mirror case base (AST0960.23)