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CHAP. X. How to make a most Ʋseful Instrument of the Stars, and by it to know most readily when any of 31 of the most notable Stars will come to the Meridian, what Hour of the Night, at any time of the Year, at the first sight.
THis Instrument consisteth of two parts, which is two Rundles; on the back side of the foregoing Nocturnal it may be very fitly made: On the matter or greater Rundle are three Circles divided; the outermost is the 12 Months of the Year, begun the 10th of March, the day the Sun enters into Aries; and the Days equally divided to the Number of Days in each Month. The second Circle re∣presenteth the 24 Hour Circle, divided equally into 24 Hours, ½ and ¼, beginning the 10th of March at 12 a Clock at Noon, the time the Sun comes to the Meridian, and the first Degree of Aries. The third and inward Circle is the Aequinoctial, divided into 360 Degrees; by them is accounted the Right Ascension of these 31 Stars in the Table following.
Longitude. | Latitude. | Ascensi∣on. | Decli∣nation. | Nor. Sou. | ||
The Whale's Tail | 27 56 ♓ | 20 47 S | 06 45 | 19 48 | S | 2 |
The Bright Star in the South Foot of Androm. | 09 39 ♉ | 27 46 N | 25 57 | 40 44 | N | 2 |
The Bright Star in the Right Side of Perseus. | 27 17 ♉ | 30 05 N | 44 16 | 48 36 | N | 2 |
The Bright Star of the 7 Stars or Pleiades. | 24 24 ♉ | 04 0 N | 52 00 | 23 03 | N | 3 |
The South Eye of the Bull Aldebaran. | 05 12 ♊ | 05 31 S | 64 17 | 15 48 | N | 1 |
The Bright Star in the left Foot of Orion Riges. | 12 17 ♊ | 31 11 S | 74 44 | 8 37 | N | 1 |
Orion's right Shoulder towards the East. | 24 12 ♊ | 16 6 S | 84 23 | 07 18 | N | 1 |
The glittering Star in the Mouth of the great Dog. | 09 35½ ♋ | 39 30 S | 97 42 | 16 14 | S | 1 |
The Little Dog's Thigh Procyon. | 21 18½ ♋ | 15 57 S | 110 34 | 06 03 | N | 2 |
In the South Arm of the Crab. | 09 03½ ♌ | 05 08 S | 125 22 | 20 48 | N | 3 |
The Bright Star called the Heart of the Hydra. | 22 45 ♌ | 22 24 N | 137 54 | 07 15 | S | 1 |
The Lion's Heart Regulus. | 25 17 ♌ | 00 26 N | 147 43 | 13 33 | N | 1 |
The lower of the Pointers. | 14 43 ♌ | 45 03 N | 160 18 | 58 08 | N | 2 |
The White or North Pointer. | 10 34 ♌ | 49 40 N | 160 48 | 63 32 | N | 2 |
The Lion's Tail. | 17 03 ♍ | 12 18 N | 173 04 | 16 25 | N | 1 |
The First between the Tail and the Body. | 04 10 ♍ | 54 18 N | 189 03 | 57 47 | N | 2 |
The second of the Tail of the Horses. | 10 56 ♍ | 56 14 N | 197 37 | 56 41 | N | 2 |
The Fore-Horse, or last in the Tail. | 22 12 ♍ | 54 25 N | 203 37 | 51 00 | N | 2 |
In the Skirt of his Garment Arcturus. | 19 39 ♎ | 31 2½ N | 210 13 | 20 58 | N | 1 |
The South Balance of Libra. | 10 31 ♏ | 00 26 N | 218 13 | 14 37 | S | 2 |
The Brightest of the Guards. | 08 16 ♌ | 72 51 N | 223 37 | 75 38 | N | 2 |
The Scorpion Heart Antares. | 08 13 ♐ | 04 27 S | 242 23 | 25 37 | S | 1 |
Engonasis Head Hercules. | 11 31 ♐ | 37 23 N | 254 12 | 14 50 | N | 3 |
The Bright Star of the Harp Lyra. | 10 43 ♑ | 61 47 N | 276 27 | 38 30 | N | 1 |
The Swan's Bill. | 26 44 ♑ | 49 02 N | 289 23 | 27 18 | N | 3 |
The Bright Star the Eagle's Heart. | 27 09 ♑ | 29 21½ N | 293 41 | 08 03 | N | 2 |
The Dolphin's Tail. | 09 32 ♒ | 29 08 N | 304 24 | 10 14 | N | 3 |
The Mouth of Pegasus the winged Horse. | 27 22 ♒ | 22 7½ N | 322 03 | 08 24 | N | 3 |
The Bright Star of Pegasus Neck. | 1 39½ ♓ | 17 41 N | 336 21 | 09 08 | N | 3 |
The Southern Star in the Wing of Pegasus Macrobe | 18 56½ ♓ | 19 26 N | 342 07 | 13 28 | N | 2 |
Andromeda her Head. | 09 47 ♈ | 25 42 N | 357 54 | 27 18 | N | 2 |