I earlier translated a Swedish text to English about old observatories in Sweden.
A couples of days ago we by mistake found three old observatories in the forest when we looking for ancient Swedish history, viking era. One of the observatories is the Tamm's observatory in the text.
I took some photos of the observatories and added text with information about them:
It was already in the plan to visit Tamm's observatory in the future, but I thought it was much more North.
Lucky day :-)
Edited by Astrofriend, 04 March 2021 - 05:14 PM.