Universal
The back contains a universal with a
Azarquiel/Saphea/Gemma Frisius projection. The universal
contains the following:
|
Angle of inclination |
Direction of inclination |
Labelled |
Language |
Script |
Line style |
Notes |
| Ecliptic |
23 |
Top-right/bottom-left |
Zodiacal symbols |
Numbers |
Numbers, stamped |
Plain |
|
| Tropic of Cancer |
N/A |
N/A |
Not labelled |
|
|
Plain |
|
| Tropic of Capricorn |
N/A |
N/A |
Not labelled |
|
|
Plain |
|
| Arctic circle |
N/A |
N/A |
Not labelled |
|
|
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 |
| 2° |
Plain |
European Modern |
Every fifth meridian is hatched |
The universal contains the following parallels:
| Range |
Interval |
Style of line |
Number style |
Description |
| |
2° |
Plain |
N/A |
|
The universal contains scales of the following types:
| Type |
Range & Units |
Numbered |
Geometry |
Location |
| Degree |
0 - 90, Degrees |
Every 10 degrees |
Circular, concentric |
The entire outer circle on the back of an
astrolabe. |
| Zodiacal
signs |
0 - 30, Degrees of ecliptic |
Every 10 degrees |
Linear |
On the ecliptic of a universal projection |
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 |
| Eridani extremŭm |
Acamar |
13.0° of Taurus |
-40° |
engraved |
| Oculus taŭri |
Aldebaran |
2.0° of Gemini |
16° |
engraved |
| Orionis sin: pes |
Rigel |
14.0° of Gemini |
-9° |
|
| Hircus |
Capella |
14.0° of Gemini |
45° |
engraved |
| Canopus |
Canopus |
3.0° of Cancer |
-51° |
engraved |
| Canis maior |
Sirius |
7.0° of Cancer |
-15° |
engraved |
| Canicŭla |
Procyon |
19.0° of Cancer |
6° |
engraved |
| Cor Leonis |
Regulus |
24.0° of Leo |
13° |
engraved |
| Lyra |
Vega |
5.0° of Capricorn |
38° |
engraved |
| Aqŭila |
Altair |
21.0° of Capricorn |
7° |
engraved |
| Cauda cigni |
Deneb |
6.0° of Aquarius |
44° |
engraved |
| Arcturŭs |
Arcturus |
0.0° of Pisces |
21° |
engraved |
| Postrema aqŭæ fu: |
Fomalhaut |
3.0° of Pisces |
-36° |
engraved |
| Extre cau: Ursa maioris |
Alkaid |
8.0° of Pisces |
51° |
engraved |
