| Note: | Bosscha Observatory spectroscopic observation (objective prism) of N=1684 stars in 25 sq. degrees surrounding SA 158, lying between declinations -27° and -32° and right ascensions 18h16min and 18h36min (1950). Finding charts in Fig. 1. |
| Ref: | =1964AJ.....69..104M |
| by | MCCUSKEY S.W. |
| Astron. J., 69, 104-123 (1964) | |
| Stellar space density near selected area 158. | |
| o | Table I: <[M64] +DD NNN> N=1684. |
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