Site of First Amateur Astronomical Observatory of Record in California
California State Historic Landmark 715
#715 Astronomical Observatory
On the knoll behind this marker, George Madiera built the first amateur astronomical observatory of record in California and there discovered the great comet of 1861 with a three-inch refractor telescope.
No photo exists for this site.
Shake Ridge Rd, 1 mi W of Rams Horn Grade, outside Volcano.
Return to other landmarks in Amador county.
Please note: I have no connection to any organizations mentioned on this site.
Site contents copyright 1996-2000 by Donald Laird - all rights reserved
Send comments to: