161. Astronomy Without A Telescope Phases and eclipses. The phase diagram seems to show that a solar and lunar eclipse should happen every month but eclipses actually happen only twice a year. http://www.astronomynotes.com/nakedeye/s13.htm

Phases and Eclipses Chapter index in this window Chapter index in separate window This material (including images) is . See my for fair use practices. One of the most familiar things about the Moon is that it goes through phases from new (all shadow) to first quarter (1/2 appears to be in shadow) to full (all lit up) to third quarter (opposite to the first quarter) and back to new. This cycle takes about 29.53 days. This time period is known as the Moon's synodic period . Because the Moon moves through its phases in about four weeks, the phases of new moon, first quarter, full moon, third quarter occur nearly one week apart from each other. Select this link to find the phase for any date and time between 18002199 (will display in another window). A picture of the Moon will be shown. crescent phase. Because the Moon is spherical, the boundary between light and shadow is curved. Note that the figure of the phase angles shows just one new phase and is the beginning of the phase cycle. Sometimes that angle = degrees and you have a solar eclipse -the moon is in new phase and quarter phase because you can see a quarter of the Moon's entire surface. The quarter phase a week after the new phase is called

162. All About Solar Eclipses - The Solar Eclipses 1951-2100 Software Detailed info about why and when solar eclipses occur. Solar eclipses 19512100, the ultimate software for eclipses prediction, can http://www.solareclipses.net/

163. Solar Eclipses Solar eclipses. Do NOT look directly at the Sun when it s partially eclipsed! DO look at the Sun when it is FULLY eclipsed! About Solar eclipses. http://solar-center.stanford.edu/eclipse/eclipse.html

S olar E clipses Do NOT look directly at the Sun when it's partially eclipsed! DO look at the Sun when it is FULLY eclipsed! 1998 Eclipse News The 1998 Eclipse Overview Classroom Activities More about Eclipses ... Other Pages A solar eclipse occurs when the Moon, during its monthly trip around the Earth, happens to line up exactly between the Earth and the Sun. The glory of a solar eclipse comes from the dramatic view of the Sun's corona, or outer atmosphere, which we can see only when the brilliant solar disk is blocked by the Moon. The corona is not just light shining from around the disk. It is actually the outermost layer of the solar atmosphere. Although the gas is very sparse, it is extraordinarily hot (800,000 to 3,000,000 K), even hotter than the surface of the Sun! The corona shows up as pearly white streamers, and their shape is determined by the Sun's current magnetic fields. Thus every eclipse will be unique and beautiful in its own way. News and Press Releases of the 26 February 1998 Solar Eclipse Stanford solar physicists take part in eclipse webcast SOHO spacecraft to assist eclipse observer SOHO Eclipse Page SwRI planetary scientists to observe February 26 total solar eclipse ... Party eclipse lives up to nickname (MS NBC) Images of the 26 February 1998 Solar Eclipse Predictions of the Corona's Shape Other Web Images of the 26 February Eclipse The Eclipse 98 Team broadcasted live images from multiple sites in the path of totality. A representative from the SOLAR Center providded images from a ship in the Caribbean!

164. Docfile On CATZEUTE.TXT SOLAR eclipses on Earth, 1001 BC to AD 2500. It includes all solar eclipses visible on Earth during the period 1001 BC to AD 2500. http://user.online.be/felixverbelen/catzeute.htm

SOLAR ECLIPSES on Earth, 1001 BC to AD 2500 revised November 2003 Please send comments to Felix Verbelen Several of the Mesoamerican Codices contain elements that are most probably related to solar or lunar eclipses and to other astronomical phenomena. In order to facilitate further investigations the presented datafile is proposed. It includes all solar eclipses visible on Earth during the period 1001 BC to AD 2500. Several excellent catalogues of Solar Eclipses already exist [1 and 2], but these use Ephemeris Time (or Terrestrial Time). Our list is based on Universal Time and therefor tends to be directly usable for historical research. Calendar Up till October 4th 1582, dates are according to the Julian Calendar. After that date we changed to the Gregorian Calendar. Years before AD 1 are given according to the astronomical notation. This means that year 1 is preceded by year 0, which is preceded by year -1. So, year 1 = AD 1, year = 1 BC, year -1 = 2 BC, and so on. Time indications All times are expressed in Universal Time (UT) In a number of countries UT is still referred to as GMT (Greenwich Mean Time).

165. Solar Eclipse - July 11, 1991 Solar Eclipse July 11, 1991. Photo Details Instrument AstroPhysics 7 -f/9 Starfire Refractor (178mm-f/6 with Focal Reducer); Filter http://www.aa6g.org/Astronomy/Eclipses/solar_eclipse.html

Solar Eclipse - July 11, 1991 Photo Details: Instrument: AstroPhysics 7"-f/9 Starfire Refractor (178mm-f/6 with Focal Reducer) Filter: None Exposure: See Comments Film: Fuji Velvia Developer: Location: Date: July 11, 1991 Comments: This image is a composite of 1/2000 sec, 1/125 sec, 1/32 sec, 1/16 sec, 1/8 sec, and 1/4 sec photos. They were all taken in the span of about 1 minute during totality. Photoshop was used to build the image starting with the shortest exposure and progressively layering/blending outer parts of the corona shown by the longer exposures. Back to Astrophoto Page

166. Amateur Astrophotography By Cees Bassa Welcome! This website is dedicated to astronomical photographs taken with simple equipment and under moderate conditions. Hopefully http://www.phys.uu.nl/~bassa/

Welcome! T his website is dedicated to astronomical photographs taken with simple equipment and under moderate conditions. H opefully my work will inspire other amateurs in this field to try for their own. E njoy! Cees Bassa New (July 21, 2001) June 21, 2001: A Total Solar Eclipse from Africa Site: July 11, 2001 Astronomy Picture of the Day Image: Eclipse Sequence Image: Eclipse 2001 Composite Image: Crepescular Rays Article: Total Solar Eclipse of June 21, 2001 Last Revised: July 21, 2001 Usage of this material by others without prior written consent or knowledge of the author is prohibited. Contact the author for information. APML Webring Previous Next Join Ring ... Ringmaster

167. AstroRED.net - Eclipse Online http://www.astrored.net/eclipse/

168. Sheridan Williams Sheridan Williams. Solar Eclipse Web Site. Click on picture to enter. http://www.clocktower.demon.co.uk/eclipse99/

Sheridan Williams Solar Eclipse Web Site Click on picture to enter

169. Bob Yen's WAY OUT Photography Copyright 1997 Bob Yen / All Rights Reserved All Images Copyright Protected (via 1988 Berne Convention) No Use Without Permission (Prior Expressed Written http://www.comet-track.com/eclipse/lecl.html

Bob Yen All Images No Use Without Permission (Prior Expressed Written Consent) e-mail me for licensing/purchase of images byen00@earthlink.net or contact my photo agents Gamma Liasion International / PhotoResearchers LUNAR ECLIPSE PHOTO GALLERY lunar eclipse from Borrego Desert lunar eclipse from Mojave Desert lunar eclipse from Borrego Desert partial eclipse from Mt. Wilson, California ECLIPSE INDEX SOLAR ECLIPSE LUNAR ECLIPSE SOLAR/LUNAR ... BACK to MAIN PAGE

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