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A Galaxy-Hop in Leo
by Alan M. MacRobert

On to M96 and M95

M96
One of a pair of Messier galaxies in Leo; M96 is 0.8° away from M95 (below). M95 is a barred spiral; M96 is plain. Like M65, M66, and M105, both M96 and M95 are thought to be roughly 30 million light-years away. Kim Zussman used a 14-inch f/8 Cassegrain telescope for a 2-hour exposure of M96 on Tech Pan 2415 film.
17. Four double stars. Just south of NGC 3367 is a field of wide doubles. Barely 16° to the galaxy's south is a 44"-wide pair, magnitudes 8.9 and 10.0; the fainter star is due west. I've labeled it Double B on the map. Can you see any orange color in the brighter star?

A half degree southeast, Double C is 36" wide with the 10.7-magnitude component southwest of the 9th-magnitude primary.

S1472 in the same field is brighter, magnitudes 8.1 and 8.8, about 40" wide with a K0 primary. The stars looked pale yellow-orange and greenish gray. Its secondary star and that of Double C point nearly toward each other.

S1477 is closer, with a separation of 18", and nearly equal; both stars are 9th magnitude. They're aligned almost east-west (position angle 275°). This is the prettiest pair of the four, and it forms a nice little triangle with two field stars.

18. M105 and NGC 3384 (mags. 9.3 and 9.9, s.b. 12.1 and 12.8). The surprises keep coming! This is another beautiful pair of glows in the same field, a follow-on to M65-M66 and NGC 3607-08. M105 is larger and has a bigger glowing core. NGC 3384 has a bright nucleus too but is somewhat smaller overall. I couldn't say I definitely saw NGC 3389 (mag. 11.9, s.b. 12.9), located very close by.

There's a nice little row of four 10th-magnitude stars running north-south just east of this pair or trio. I didn't want to leave this spot — a special deep-sky find worth returning to on future nights.

19. M96 (mag. 9.2, s.b. 12.9). We end the show with two bangs. The Sa-type spiral M96 was found easily, all by itself in a relatively starless field. It's large, appeared slightly elongated northwest-southeast, and has a bright center. I thought it looked a little more sharply bordered on the northeast side.

M95
This view of M95 was also obtained by Kim Zussman who used an 11-inch f/10 Schmidt-Cassegrain for a 2½-hour exposure on Tech Pan 2415 film.
20. M95 (mag. 9.7, s.b. 13.5), a barred spiral of type SBb, appeared less bright than M96. It was nearly as large but with a dimmer center. Again, it was somewhat elongated northwest-southeast.

We've worked westward all the way from the Lion's tail tip to his midriff, flea-like. By now, if you've taken the tour at a leisurely pace and stayed out late, Leo is already carrying his deep-sky cargo down toward the west. Time to turn in, with visions of galaxy glows in hidden depths over the rooftops to bring to our dreams.



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