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 |
