Universal
The back contains a universal with a De
Rojas projection. The universal contains the following:
|
Angle of inclination |
Direction of inclination |
Labelled |
Language |
Script |
Line style |
Notes |
Ecliptic |
23 |
Top-right/bottom-left |
|
|
|
Plain |
|
Tropic of Cancer |
|
N/A |
HORÆ ANTE MERIDIEM |
Latin |
Roman Capital |
Hatched |
|
Tropic of Capricorn |
|
N/A |
HORÆ POST MERIDIEM |
Latin |
Roman Capital |
Hatched |
|
Prime meridian |
|
N/A |
Zodiacal symbols |
|
|
Plain |
|
Arctic circle |
|
N/A |
POLVS ARCTICVS |
Latin |
Roman Capital |
Plain |
The circle (often represented as a line or arc) at
66.5°. These are commonly found on universal
projections |
Arctic circle |
|
N/A |
POLVS ANTACTICVS |
Latin |
Roman Capital |
Plain |
The circle (often represented as a line or arc) at
66.5°. These are commonly found on universal
projections |
The universal contains the following meridians:
Interval |
Style of line |
Number style |
Description |
3° |
Plain |
N/A |
The hour lines are decorated with arrows and
dots |
The universal contains the following parallels:
Range |
Interval |
Style of line |
Number style |
Description |
|
2° |
Plain |
N/A |
Every 30° line is hatched |
90 to 180 |
10° |
Plain |
N/A |
|
The universal contains scales of the following types:
Type |
Range & Units |
Numbered |
Geometry |
Location |
Degree |
0 - 90, Degrees |
Every 5 degrees |
Circular, concentric |
The entire outer circle on the back of an
astrolabe. |
Stars
The universal contains the following stars.
Click on the star name or modern star name to search for
other astrolabes with the same star.
Star name
(on instrument) |
Modern star
(if known) |
Mediation |
Declination |
Pointer |
CAPVT ♊ ANTECEDENTIS |
Castor |
N/A |
N/A |
engraved |
LVCIDA YDRÆ |
Alphard |
N/A |
N/A |
engraved |
AQVILA |
Altair |
N/A |
N/A |
engraved |
ERTRE CAVDE VRSÆ MAIO |
Alkaid |
N/A |
N/A |
engraved |
HIRCVS |
Capella |
N/A |
N/A |
engraved |
VENTER CETI |
Baten Kaitos |
N/A |
N/A |
engraved |
CYGNVS |
Deneb |
N/A |
N/A |
engraved |
CAMS MAI |
Sirius |
N/A |
N/A |
engraved |
OCVLVS TAVRI |
Aldebaran |
N/A |
N/A |
engraved |
POSTREMA FVSIONIS AQVE |
Fomalhaut |
N/A |
N/A |
engraved |
DERTER BVMER ORION |
Betelgeuse |
N/A |
N/A |
engraved |
COR LEONIS |
Regulus |
N/A |
N/A |
engraved |
COR SCRPI |
Antares |
N/A |
N/A |
engraved |
SPICA VIRGINIS |
Spica |
N/A |
N/A |
engraved |
CANIS MINOR |
Procyon |
N/A |
N/A |
engraved |
CAVDA LEONIS |
Denebola |
N/A |
N/A |
engraved |
CAVDA CAPRICORNII |
Deneb Algiedi |
N/A |
N/A |
engraved |