The Annals of the Dudley Observatory, Vol. I, published by Weed, Parsons in 1866, provides a handy ground plan of Blandina Dudley’s dream observatory, which was formally inaugurated in 1856.  The space marked a was the front entrance and piazza. Immediately inside, b, was the base of the equatorial pier, essentially the permanent mounting point … Continue reading The Floor Plan of the Dudley Observatory