Lion Nebula (Sh 2-132)
History
While examining his photographs Edward E. Barnard found on plate 50 «some irregular, feeble nebulosity here, about a degree in extent», which he did not catalog. But he found a «round, dusky» dark nebula of diameter 5´, about 13´ NE of the 7.8 mag star BD +55°2709. After his death in 1923 it was listed as B 369 in the «Photographic Atlas of Selected Regions of the Milky Way», published 1927. [609]
In the 1950-ies the American astronomer Stewart Sharpless discovered the large nebula Sh 2-132 on the 48 inch Schmidt telescope photo plates of the «Palomar Observatory Sky Survey». In 1953 he published it his first edition of his catalogue, where this nebula was listed as Sh 1-91. [309] In 1959 he published an updated list. There he added the notes: «Part of II Cep association.» [310]
In Beverly Lynds 1962 «Catalogue of Dark Nebulae» that she found on the same survey photo plates there are a number of associated dark nebulae listed: LDN 1150 (Barnard 369), LDN 1154, LDN 1156, LDN 1161, LDN 1162. [473] In her 1965 «Catalogue of Bright Nebulae» the nebula Sh 2-132 is listed as LBN 102.79-00.92, also referred to LBN 473. [270]
Physical Properties
| Name | Type | RA (J2000.0) |
Dec (J2000.0) |
Size ['] |
Identifiers |
|---|---|---|---|---|---|
| Sh 2-132 | HII | 22h 19m 09s | +56° 04' 45" | IRCO 34; LBN 102.79-00.92; LBN 473; Mol 143; SH 2-132; WB89 170 | |
| Barnard 369 | DNe | 22h 15m 48s | +56° 00' 00" | 5 × 5 | Barnard 369; LDN 1150; [DB2002b] G102.37-0.53 |
| LDN 1154 | DNe | 22h 16m 48s | +56° 13' 00" | 5 × 5 | LDN 1154; [DB2002b] G102.61-0.43 |
| LDN 1156 | DNe | 22h 19m 54s | +55° 45' 00" | 13 × 13 | LDN 1156; [DB2002b] G102.71-1.05 |
| LDN 1161 | DNe | 22h 19m 54s | +56° 08' 00" | 5 × 5 | LDN 1161; [DB2002b] G102.92-0.73 |
| LDN 1162 | DNe | 21h 20m 00s | +65° 03' 00" | 4 × 4 | LDN 1162; [DB2002b] G102.92+10.76 |
Finder Chart
The H-II region Sh 2-132 is located in the constellation Cepheus. On 26 August it is in opposition to the Sun and culminates at local midnight. The best time to observe is January to December, when the constellation is highest at night.
