GEMINI
AURIGAPERSEUSLYNXLYNXURSA MINORURSA MAJOR
LEO MINORURSA MAJORVENATICICANESBERENICESCOMALEOVIRGOSERPENSCAPUT
LIBRACAMELOPARDALISDRACOLYRAHERCULESBOREALISCORONASERPENSCAPUTBOÖTES BOÖTESLACERTA CYGNUSCEPHEUSCASSIOPEIATRIANGULUM ANDROMEDAPISCES PEGASUSARIESTAURUSTAURUSERIDANUSMAJORCANISMONOCEROSCANIS MINORCANCERHYDRAHYDRASEXTANSANTLIA PYXISCRATERCORVUSCENTAURUS VELAPUPPISCOLUMBALEPUSORIONSOUTH NORTHE W E
30 oN40 oN50 oN60 oN60 oN50 oN40 oN30 oNCapella
PolarisAlgolDenebVegaArcturusSpicaCastor
Pollux
RegulusProcyonAdharaSiriusBetelgeuse AldebaranRigelPleiadesECLIPTICECLIPTICGEMINIAURIGA AURIGAPERSEUS
PERSEUS LYNXMINORURSAMAJORURSA
MINORLEOVENATICICANESBERENICESCOMALEOVIRGOCAMELOPARDALISDRACOLYRAHERCULES
BOREALISCORONABOÖTES
CYGNUSLACERTA
CEPHEUSCASSIOPEIA
ANDROMEDATRIANGULUMPISCESPISCESPEGASUSARIES
TAURUSPISCESCETUS
CANIS MAJOR ERIDANUSMONOCEROSCANCER MINORCANISHYDRASEXTANSLEOANTLIAPYXIS
CRATER
VELAPUPPISCARINA DORADOHOROLOGIUMCAELUMPICTORCOLUMBA FORNAXLEPUSORIONSOUTH NORTHE W E
30 oN40 oN50 oN60 oN60 oN50 oN40 oN30 oNCapella
CapellaPolarisAlgolDenebVega
ArcturusCastor
PolluxRegulusProcyonAdharaSiriusBetelgeuseAldebaranMiraCanopusRigelPleiadesECLIPTICSeasonal Charts: North
T
he charts given on this page are suitable for observers
who live in the northern hemisphere, between latitudes
50 degrees and 30 degrees north. The horizon is given by
the latitude marks near the bottom of the charts. Thus, for
an observer who lives at 30 degrees north, the northern
horizon in the first map will pass just above Deneb, which
will be visible.
A star rises earlier, on average, by two hours a month;
thus the chart for 2000 hours on 1 January will be valid for
1800 hours on 1 February and 2200 hours on 1 December.
The limiting visibility of a star for an observer at
any latitude can be worked out from its declination. To
an observer in the northern hemisphere, a star is at its
lowest point in the sky when it is due north; a star which
is ‘below’ the pole by the amount of one’s latitude will
touch the horizon when at its lowest point. If it is closer to
the pole than that it will be circumpolar. From latitude
51 degrees north, for example, a star is circumpolar if its
declination is 90 51 or 31 degrees north, or greater.
Thus Capella, dec. 45 degrees 57 minutes, is circumpolarATLAS OF THE UNIVERSE
20 ° 40 ° 60 ° 80 °SOUTH NORTHE W E
30 oN40 oN50 oN60 oN60 oN50 oN40 oN30 oNECLIPTIC ECLIPTIC
GEMINIAURIGA PERSEUSLYNXURSA MINORURSA MAJORLEO MINORURSA MAJORVENATICICANESCOMA BERENICESLEO LEO
VIRGOLIBRASAGITTARIUS SCORPIUS LUPUSSCUTUM
AQUILAOPHIUCHUSNORMA CRUXCAMELOPARDALISDRACO
LYRAHERCULESHERCULESBOREALISCORONASERPENSCAPUTSERPENSCAUDABOÖTESCYGNUSLACERTACEPHEUSCASSIOPEIAANDROMEDATRIANGULUMPEGASUSDELPHINUSSAGITTAVULPECULAAQUILATAURUSCANISMINORCANCERCANCERHYDRA HYDRASEXTANSANTLIACORVUS CRATERVELACENTAURUS
ORIONCapellaPolarisAlgolDenebAltairVegaArcturusAntaresSpica
PolluxCastorRegulusProcyon Latitudesof the major
cites of the northern
hemisphere. For the
observer, all the stars of the
northern sky are visible in
the course of a year, but he
or she can see only a limited
distance south of the
equator. At a latitude of x°N,
the most southerly point that
can be seen in the sky is 90
x°S. Thus, for example, to
an observer at latitude 50°N,
only the sky north of 90 50
(or 40°S) is ever visible.Chart 1
Chart 2
Chart 3
Morning
1 October at 5.30
15 October at 4.30
30 October at 3.30Evening
1 January at 11.30
15 January at 10.30
30 January at 9.30Morning
15 November at 6.30
1 December at 5.30
15 December at 4.30Evening
1 March at 11.30
15 March at 10.30
30 March at 9.30Morning
15 January at 6.30
1 February at 5.30
14 February at 4.30Evening
1 May at 11.30
15 May at 10.30
30 May at 9.30F Atl of Univ Phil'03stp 3/4/03 5:44 pm Page 214