Details are provided for the observation of the partial lunar eclipse of 1999 July 28. This eclipse will be visible in the Western parts of the USA and South America, as well as in Asia and Australasia. The visibility is shown below in Fred Espenak's diagram below. The shaded areas indicate that the eclipse will be
These times are given in Universal Time, just add your time zone if East of Greenwich to get local time, deduct your time zone if West. To help you there is a Time Zone Map *here
PRIME CONTACT TIMES FOR LUNAR ECLIPSE OF 1999 JULY 28 in Universal Time (UT) Moon enters penumbra 8h 56m 15s Moon enters umbra (1 C) 10h 21m 50s Middle of the eclipse 11h 33m 41s Moon leaves umbra (4 C) 12h 45m 32s Moon leaves penumbra 14h 11m 08s Magnitude of the eclipse is 0.402 LUNAR LATITUDES AT PRIME CONTACTS in degrees, - S, + N Latitude at 1 C is -58.29 Latitude at 4 C is -43.84
There is an animated file of 27 looped images showing the appearance of the Earth's shadow crossing the Moon in the area below for the 1999 July 28 partial lunar eclipse. The time base is in hours:minutes (UT).
These images were taken from *Redshift * by Maris for the exact location of the Calwell Lunar Observatory. Note the re-appearance of the 5.0 magnitude star (SAO 163614) just above the centre left of 3 of the frames from 10h 51m (UT).
Reporting Observations
To ensure that I can quickly collate and analyse your observations, please send all reports by AIRMAIL or e-mail and video tapes of the observation of the eclipse by AIRMAIL as soon as possible to:
1. Soulsby, B.W., 1990. Improved lunar eclipse ephemerides, J. Brit. astr. Ass., 100(6): 293-305.
2. Soulsby, B.W., 1995. Analysis of the partial lunar eclipse of 1995 April 15, Aust. J. Astr., 6(2): 143-148.
3. Espenak, F., 1989. Fifty Year Cannon of Lunar Eclipses: 1986-2035, NASA Reference Publication 1216, March 1989.
Image Analyst Revision 8.0software for the Macintosh has been used to determine the Best Fit circles to the captured image, here a good fit to the sign of first gradient of the umbral edge (large circle in the red box) and a exact fit to the lunar limb was found. The measurements taken allowed the change in shape of the umbra, and hence the height of the Earth's thermosphere to be determined for the complete eclipse see * Soulsby . The image above was one of a sequence taken by Dale Ireland at 04h 45m (UT). Many other images from the Universidade Federal de Pernambuco, in Brazil were also analysed to consolidate data for umbral change.
If you are able to produce video records of either 1997 eclipse, the author would be pleased to analyse these on receipt of the original video tapes if sent to his observatory address.
Stellar occultations are predicted for selected sites for this lunar eclipse. On request, occultation predictions can be forwarded by e-mail for grouped areas of the globe. The occultation predictions are produced using Dave Herald's program Occult.exe Version 2.0. Occultation predictions are available in the link below.