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126

Wed. Nov. 21, 1906

Var. 11 C.P.D. -59° 3809

* Enter in short ledger 9.0 and fainter

{11^[h] to 13 } -60°
{11 to 13 } -45°
{10 to 13 1/2 -75°

[[4 column table]]
AM 1186 | AM 3519 | AM 2395 | AM 400
8.8 | 8.8 | 8.8 | 8.7

AM 1321 | AM 3454 | AM 2041 | AM 1467
8.8 | 8.8 | 8.8 | 8.8

AM 1379 | AM 3380 | AM 2023 | AM 769
8.8 | 8.8 | 8.8 | 8.8

AM 1749 | AM 3358 | AM 1986 | AM 368
8.8 | 8.8 | 8.7 | off

AM 416 | AM 3326 | AM 1891 |   |
8.8 | 8.8 | 8.7 |   |

AM 1831 | AM 2668 | AM 1870 03,4,21 |   |
off | 8.8 | 9.3 |   |

AM 1754 | AM 2623 | AM 370 |   |
9.0 | 8.8 | 8.9 |   |

AM 4308 | AM 2576 | AM 1818 |   |
8.8 | 8.8 | 9.1 |   |

AM 3581 | AM 2425 | AM 1128 |   |
8.9 | 8.8 | 8.8 |   |

* Make remark at beginning of ledger that it is often uncertain whether variable is really faint when it is estimated 9.0
A.D.W



127

Wednesday, Nov. 21, 1906

Var. 11 C.P.D. -59° 3809
Remark on Comparison Stars a and c

On B 26961 (page 119) a was observed to be faint and was estimated to be of the magnitude 9.2. The region is near the edge of that plate, and so it is of long exposure the images were larger. The estimate. therefore, may be three or four tenths of a magnitude in error. There seems to be no question, however, that the image of a is faint on that plate. Examined on all plates since observed on B 26961, including all the AM plates examined for the variable and found to be nearly constant in brightness. In the C.P.D. its magnitude is given as 8.5, while that of b is 8.3. As it is usually obviously brighter than be [[strikethrough]] it [[/strikethrough]] this suggests that a may have been unusually faint on the plate measured by Kapteyn.

Comparison star c was suspected of varying two or three tenths of a magnitude on B plates, but does not show changes on AM plates. The apparent changes were probably due to it being at a distance from a, b and d and therefore affected by varying distances from the edge of the plate.