Astronomy at Hartwick College

Ernest B. Wright Observatory (telescopes, cameras, other equipment, visitors)  Wright Observatory Photo Page (the telescope and some astrnomical things we have photograhed)  Astronomy Courses at Hartwick College (Astronomy with lab, General Astronomy without lab) A Career in Astronomy

Selected Topics in Hindu Astronomy and Related Ancient Astronomy

18th Century Observatories of Jai Singh in Delhi, Jaipur, Benares (brief history, instruments, visiting)

Hindu Lunar Calendar (Lunar days [tithi], Lunar months, new year & Diwali)  Lunar Houses (27 constellations near the ecliptic to mark Lunar motion)

Surya the Sun God (Surya's horses, chariot and Surya temples)

Rahu & Ketu (the shadow planets which cause solar and lunar eclipses)

1995 Total Eclipse of the Sun in India (Hindu precautions, the eclipse in Rajasthan, on TV)

Making 360 days in a Year (Babylonian and Maya solar year day count)

Name & Order of the Days of the Week (Babylonian origin, used in Julian calendar and Modern Hindu calendar)

The Surya Siddhanta; an Ancient Text Book of Hindu Astronomy
 

A Brief History of the Surya Siddhanta Description of the Solar Eclipse Calculation presented in the Surya Siddhanta Calculating the Circumstances of a Solar Eclispe; a Javascript program calculates according to the prescriptions of the Surya Siddhanta A Javascript New Moon Calculator to calculate dates of the New Moon  A Java animation showing the orbit of the Moon and demonstrating when and how eclipses occur. Learn more about nodes, eclipse seasons etc.

This page prepared by C.Hartley, Director of the Ernest B. Wright Observatory at the Department of Physics at Hartwick College in the City of Oneonta, NY. More things from C. Hartley at his home.

All text, drawings and photographs by C. Hartley, unless otherwise noted, copyright © 2001.
 

has counted visitors since October 2000.