NGC/IC Project Restoration Effort

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NGC1275

 

Basic Information


Location and Magnitude


Right Ascension: 3:19:48.1
Declination: +41:30:41
Constellation: PER
Visual Magnitude: 11.9

Historic Information


Discoverer: Herschel W.
Year of discovery: 1786
Discovery aperture: 18.7

Observational


Summary description: F, S
Sub-type: S0/P

Corwin's Notes

===== NGC 1275 is the brightest galaxy in the Perseus Cluster, and is obviously the one that both WH and JH saw. Their positions are good, but Dreyer put their numbers and description on NGC 1278. His NGC note gives us a clue as to the source of his confusion -- the relative positions for the other cluster members were accurately known by him from the Birr micrometric offsets (Dreyer in fact corrects a mistake in one of them), but tying those to the absolute positions in the Herschels' and d'A's lists proved to be troublesome. Both WH and JH picked up only two other NGC objects in the cluster (NGC 1293 and 1294), and their positions for those two are not as good as for NGC 1275. Supposing that the errors in those positions also applied to NGC 1275, Dreyer "corrected" the NGC 1275 positions, so landed on the wrong galaxy in d'A's list (all of d'A's positions for galaxies in the cluster are very good, by the way).

Steve's Notes

===== NGC 1275 17.5" (10/24/87): fairly bright, fairly small, oval ~E-W, small bright core. NGC 1275 is a Seyfert galaxy and is the largest and brightest member of AGC 426. Surrounded by a swarm of faint galaxies in the core including NGC 1272 5.2' WSW, NGC 1273 4.4' WNW, NGC 1274 2.6' NW, NGC 1277 3.7' NNE, NGC 1278 3.3' NNE, NGC 1279 2.8' SE, NGC 1281 7.8' NNE. 13" (1/28/84): fairly bright, fairly small, small bright core. 8" (1/1/84): faint but not difficult, small, slightly elongated, small bright core. 6": extremely faint and small, round. Used a 6" mask on the 17.5".