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Topic: Star hopping


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  Star Hopping Guide
Star hopping is used whenever one intends to find a celestial object spreading a dim light, invisible with the naked eye.
It consists of successive leaps from a star that is visible either with the naked eye or with a finder-scope, to another star and so forth until the aimed target is reached.
In order to start a star hopp the first step would be to identify on the atlas the area where your aimed object is. After this find a star, or a group of brighter stars visible with the naked eye and situated as close as possible to the target.
www.nightskyinfo.com /star-hopping   (1167 words)

  
 Star Hopping Primerby Paul Markov,
Star hopping is a method used by amateur astronomers to located objects in the heavens.
Typically, star hopping is used for finding deep sky objects, however it is just as effective for tracking down asteroids, comets, variable stars and anything else in the sky that is too faint to be readily seen with the naked eye or in a finder scope.
Star hopping involves "hopping" from star to star with your telescope, until you arrive at the location of the target object.
www.astrobuysell.com /paul/starhop.htm   (2346 words)

  
 Star Hopping in the Great Pyramid   (Site not responding. Last check: 2007-11-03)
The width of the Star Shaft's field of view in units of RA is, by definition, equal to the Target Star's transit time in seconds and minutes, which we can the use to calibrate any pendulum or simple hourglass, and, ultimately, the Niche Clock.
The conversion factor is equal to the cosine of the star's declination.
The Star Shaft Theory and the builders' proven ability to perform such precise time and angle measurements suggests how they were able to achieve the accuracy of the Great Pyramid's construction and its alignment to the compass points using only the simple materials and tools available in the ancient world.
home.globalcrossing.net /~kjohnson/hopping.htm   (4006 words)

  
 Star hopping - Wikipedia, the free encyclopedia
Star hopping is a technique that is often used by amateur astronomers to locate items of interest in the night sky.
The bright star can easily be seen through a telescope or binoculars and with the unaided eye, and this allows the astronomer to establish exactly where they are looking with their instrument according to a map of the sky.
The observer may also follow the equatorial coordinate system on a star map in combination with telescopes equipped with equatorial mounts to "hop" or "slide" along the lines of right ascension or declination from a well known object to find a more obscure object.
en.wikipedia.org /wiki/Star_hopping   (270 words)

  
 Astronomy 101/102: Telescope Lab: Star Hopping   (Site not responding. Last check: 2007-11-03)
Each "hop" should move you in the general direction of the final object and should be relatively short in angular size.
Hops, if possible, should be done in the finder scope since it provides a wider field and can thus allow a greater grasp of the orientation of objects.
Primary is a K1 V star; secondary is a white dwarf; third and faintest companion is a low-mass M5 V star.
www.physics.vanderbilt.edu /astrocourses/AST101/labs/tl_starhop.html   (2058 words)

  
 JeffPo's Setting Circles & Celestial Coordinates Page   (Site not responding. Last check: 2007-11-03)
You know that your quarry is between this star and that star, so you point your telescope in that general direction, jumping from known star to known star until your desired object slides into view.
The north celestial pole (which is very near the star Polaris, commonly called the North Star) is the earth's north pole projected onto the sky.
They are generally quicker than star hopping when going to a target that isn't sufficiently surrounded by bright stars.
www.mindspring.com /~jeffpo/settingc.htm   (2855 words)

  
 Stargazer Online || The Night Sky on Paper
These are called the pointer stars, because if you trace a line straight out (with a little error) you'll come across a star of similar brightness to the pointer stars.
The star at the point of the triangle is Denebola, which in Arabic means "tail of the Lion".
Arcturus is the brightest star in the constellations Boötes, the Herdsman.
www.richardbell.net /starmap.html   (1833 words)

  
 The National Deep Sky Observers Society   (Site not responding. Last check: 2007-11-03)
For instance, a closely spaced double star may be shown on the map as a single dot with a line through it.
Begin your hop to your intended target by finding the general wide-field view of the area with your finderscope; start with a wider-angle (lower power) eyepiece in the main scope to show as many guidepost stars as possible.
Move the telescope toward the object, using the dimmer stars not on your chart to count the number of fields of view you have moved as these stars pass through the field.
www.cismall.com /deepsky/starhopping.html   (1127 words)

  
 Astronomy - Star Gazing   (Site not responding. Last check: 2007-11-03)
Hop from constellation to constellation; learn their shapes and the brighter stars in each one.
With this method you fix the scope of a star you're familiar with and "hop" from one star to another until you reach the desired object.
Star hopping is a technique that requires practice and patience.
www.sciencecenterct.org /Gengras/gengrasastronomy-stargazing.htm   (3431 words)

  
 Pennsylvania State Parks - Cherry Springs Dark Skies Starhopping - PA DCNR
Learning to identify the brightest stars, and using groups of stars to point you from one group to the next, is the easiest way to navigate the night sky.
A few of the first stars to appear as night falls are in or near the constellation Cygnus the Swan, also known as the Northern Cross.
The two stars that make up the outside edge of the ‘dipper’ are the stars Merak (Mahr-ak) and Dubhe (Doo-bee), also called the “pointer stars.” Draw an imaginary line from Merak to Dubhe, extend its length six times, and you will have reached Polaris, the North Star.
www.dcnr.state.pa.us /stateParks/parks/cherrysprings_starhopping.aspx   (520 words)

  
 It's time for your own star search | The San Diego Union-Tribune
Yellowish Arcturus, the fourth brightest star in the heavens, is also the most brilliant north of the celestial equator.
Bluish-white Spica, on the other hand, is the brightest star in the constellation Virgo, the maiden.
In about 3200 B.C., the temple at Thebes was oriented to Spica and, in the second century B.C. Hipparchus used the star to discover the wobble of the Earth's axis, known today as precession.
www.signonsandiego.com /uniontrib/20040331/news_1c31star.html   (406 words)

  
 DOC: Deepsky observing tutorial: page 4
The PA is measured from the brighter star, so it tells you where to look for the fainter star of each pair.
Star atlases are calibrated according to the equatorial co-ordinate system which measures distances north and south of the celestial equator in degrees (declination), and west to east in hours (right ascension).
Centre the star in your field of view, turn off the drive, and place the star just outside the eastern edge of the field.
www.fortunecity.com /roswell/borley/49/tutor4.htm   (1258 words)

  
 Starry Night® Times - June 2006
Star hopping is a method used by amateur astronomers to locate objects in the heavens - think of it as an astronomical treasure hunt.
Typically, star hopping is used for finding deep sky objects, however it is just as effective for tracking asteroids, comets, variable stars and anything else in the sky that is too faint to be readily seen with the naked eye or in a finder scope.
The latest edition of this atlas shows stars down to magnitude 8.5 (total of 81,312 stars), and its oversized (18" x 13") pages often show entire constellations on one chart, making it easier to relate what you see on paper to what is up in the sky.
www.starrynight.com /sntimes/2006/2006-06-full.html   (5478 words)

  
 Art Russell's Star-Hopping
In star hopping, one typically starts with a finder scope with the wider field of view, finds the correct location, and then zeros in on the selected object with a lower powered (but typically wider field of view) eyepiece before going to higher powers for observation.
At the lower level of resolution, star charts might map out the constellations and bright stars, and often the Messier objects such as found in "Planning A Messier Marathon" [9] or in several of the popular astronomy magazines such as Astronomy or Sky and Telescope [1, 2].
Computer based star charts can offer a chart reflecting the "zoomed in" field of view of your favorite eyepiece for those instances wherein you are trying to identify the individual members of galaxy groups and clusters.
education.gsu.edu /spehar/FOCUS/Astronomy/star-hop/Star-Hopping.htm   (2533 words)

  
 Stargazer Online || Star-Hopping in the Scorpion
The most notable star in this constellation is the red supergiant Antares, which means "rival of Ares", the ancient Greek god of war (Mars in Roman mythology).
To the west of Antares, a nearly vertical line of three stars forms the head of the scorpion.
Over a dozen blue and white stars are visible; several concentrated in the cluster's center with several more in the outer boundaries.
www.richardbell.net /summer.html   (554 words)

  
 KAO Successful CCD Imaging Page
You should have a star which varies in size and position by a few pixels each capture iteration and (depending on your system) is 5 to 10 pixels across.
The star images should be round, not oblong (may be alignment or tracking) or triangular (flared due to focus or culmination).
Point the telescope at a bright star or planet and while viewing the object, position the eyepiece in the focuser tube at the point of sharpest visual focus.
my.starstream.net /davekenyon/kao/index6.htm   (6414 words)

  
 Double Star Club Introduction
The purpose of the Double Star Club is to introduce observers to 100 of the finest double and multiple stars in the heavens.
It is preferred that the stars be found by star hopping and not by Go-To methods, although I will not insist on this if the rest of the observations are well done.
I also encourage you to look at the stars with varying powers as some of these doubles are very close and require substantial power to get a clean separation of the stars.
www.astroleague.org /al/obsclubs/dblstar/dblstar1.html   (704 words)

  
 CANOPUS 99/08 - Southern Sky Star Hopping   (Site not responding. Last check: 2007-11-03)
The accompanying star hop uses three pairs of stars to get there – starting with delta (d) and gamma (g), going through epsilon (e) and chi (c) and ending with the bright pair containing 41 Capricorni.
M 2 is a star hop away in the same direction as we have just come.
To star hop, centre gamma (g) in your finderscope and start to move the scope in the same direction as the line from alpha (a) to gamma (g).
www.aqua.co.za /assa_jhb/Canopus/c998sssh.htm   (1694 words)

  
 Telescope Observer’s Guide
Star Hopping: Start at a known star and use small steps to hop through a sequence of stars until you find the object in question.
To determine the magnitude of a comet, you can defocus your telescope so nearby stars appear as big as the comet; You then find a star that has the same brightness as the comet, the magnitude of the star is the magnitude of the comet.
When binary stars are observed over a period of years, the position angle will change in a pattern that repeats in a cyclical pattern (going from zero degrees to 90 degrees to 180, to 270 and back to zero).
www.umich.edu /~lowbrows/guide/telescope.html   (2905 words)

  
 Cosmic Voyage-The Online Resource for Amateur Astronomers   (Site not responding. Last check: 2007-11-03)
Star hopping with a telescope can be easy and fun as long as you follow the three rules to successful star hopping outlined in this section.
Many amateur astronomers begin their deep-sky adventure by observing the assorted nebulae, star clusters and galaxies in the Messier catalog.
William Herschel observed and cataloged nearly 2,500 star clusters, nebulae and galaxies during the late 18th and early 19th centuries.
www.hometown.aol.com /billferris/deepsky.html   (305 words)

  
 Star Hopping
These are also dangerous at serious star parties, in the case of a reset, if needed, the PDAs screen turns bright white for a time which is sure to cause some friction with astrophotographers.
This means, if you point the scope in the direction of a star you want to hop from, by eye, it is probably in the finder, or near it.
It is a precision device and many charts exist that allow you to start from a star and move the reticle until you are positioned on your target.
mysite.verizon.net /vze7xfco/id1.html   (1665 words)

  
 Sky Watch How to See the Stars - DiscoverySchool.com
Everything we see from the ground is subject to the effects of the atmosphere, but planets don’t twinkle like stars because they are much closer, which makes them "extended objects," meaning that it's possible to see the disk of the planet (at least with a telescope).
Star hopping is one of the best ways to learn where things are in the night sky.
The brightest stars have negative magnitudes, and the fainter ones have greater magnitudes.
school.discovery.com /schooladventures/skywatch/howto/navigating.html   (736 words)

  
 A103: Star Hopping
On the star chart, you use the declination scale to gague how much is 5° (or whatever the field of view of your finder is!), and imagine a circle around the star this size (shown in pink in the image below).
Center the telescope on the four stars in a small trapezoid shape near the brightest part of M42, and switch to the 10mm eyepiece.
All of these stars are hot young stars recently formed in the stellar nursery that is the Orion nebula.
brahms.phy.vanderbilt.edu /a103/labs/tl_starhop.shtml   (2620 words)

  
 Star Hopping the Galaxies in Virgo-Coma - Article
For the last few Springs I always had plans to be at a dark sky sight with my star charts and 10-inch reflector to hunt down those famous faint fuzzies.
The attempt was made a few times but...it was always too cold, too wet, too cloudy or just too many galaxies in the eyepiece field to spend that much time on a cold, wet, partly cloudy night figuring out what was what.
One buddy had brought along a brand new star atlas but even trying to use this didn't prove to be the answer as the clouds kept rolling in.
www.cloudynights.com /item.php?item_id=1393   (654 words)

  
 Amazon.com: Star-Hopping: Your Visa to Viewing the Universe: Books: Robert A. Garfinkle   (Site not responding. Last check: 2007-11-03)
Star-hopping--using easily seen bright stars to locate fainter celestial objects in the night sky--is a basic and essential technique for all star gazers, novice and veteran alike.
Two or more detailed star hops for each month of the year, which can be read in any order, take you on a trip through the night sky, opening new doors of discovery and reinforcing star-hopping methods and techniques.
If you do, an excellent companion to "Star Hopping" is "Discover the Stars" by Richard Berry, which touches upon a small fraction of the objects discussed by Garfinkle but presents a broader swipe of the sky.
www.amazon.com /Star-Hopping-Your-Visa-Viewing-Universe/dp/0521598893   (1777 words)

  
 Three galaxies, Two star clusters, one night
This is the second number written on a pair of binoculars, and 50mm or better is usually recommended for astronomy, although for this star hopping expedition, even a pair of 40mm binoculars will provide the light gathering ability needed.
Objects of this type are known as circumpolar objects, due to their proximity to the North Star, Polaris.
There is little star production in open clusters, and so most of these stars are very old.
www.tmclark.com /Starwatch/3_8.html   (662 words)

  
 Star Hopping
stars in the field of your low-magnification eyepiece, you are cutting
The second is a "differential" star hop, in which
group of stars, sufficiently bright to be obvious to the naked eye, as
www.plettstone.com /AstronomyByMichelle/howto/starhop.htm   (2920 words)

  
 SPACE.com -- Starry Night's Fall Sky Tour: Easy Targets in the Southern Sky
By finding one bright star that stands out and learning its name, even the most amateur stargazer can often hop to other celestial objects with ease and quickly develop a mental map of the night sky.
Kaus Australis is the brightest star in Sagittarius, and it's one of three stars marking the Archer's bow.
As night wears on and some of these stars set or skim the horizon, around to your left (the southeast) is one that is rising a bit all the while.
www.space.com /spacewatch/easy_south_021003.html   (839 words)

  
 astro-shop - Star-Hopping
This book will show you the technique of star-hopping, or using the brighter stars and asterisms as guideposts on celestial paths to fainter stars or celestial objects.
Each main hop is a step-by-step trip for you to follow.
Messier Marathon, a sundown to sunup hop across the skies; Appendix A: Classification tables; Appendix B: The constellations; Appendix C: The Greek alphabet; Appendix D: Decimalization of the day; Glossary; Bibliography; Index.
www.astro-shop.com /Katalog/Info/301210.html   (659 words)

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