Ordinary Meeting, 2003 November 29

 

References

1 Binney, J., and Merrifield, M., Galactic Astronomy, Princeton (1998)

Name

Constel.

Textbook description

Speaker's comments

Class

Mag

NGC 4833

Musca

Bright large round globular cluster.

Easy globular cluster.

8

7.4

NGC 4372

Musca

Pretty faint large round globular cluster.

Mod. Large, mod. faint, Globular cluster.

12

7.8

NGC 3228

Vela

Large open cluster.

Very large, quite bright, open cluster.

I 1p*

6.0

NGC 104 /

47 Tuc

Toucana

Very large very bright extremely round.

Very large, very bright, Globular cluster.

3

4.0

NGC 3372

Carina

The Great η Carina Nebula.

Large bright nebula.



NGC 2808

Carina

Very large, extremely, round globular cluster.

Small bright globular cluster.

1

6.3

NGC 3532

Carina

Extremely large round open cluster.

Very large open cluster.

II 1m*

3.0

NGC 6293


Ophiuchus


Small, quite bright, globular cluster

Small, quite bright, globular cluster.

4

8.2

NGC 6235


Ophiuchus


Pretty faint, large, round globular.

Mod. faint globular cluster.

4

8.2

NGC 6218 / M12

Ophiuchus

Very large, very bright globular

Bright globular cluster.

9

6.6

NGC 5139 /

Ω-Centurai

Centaurus

Extremely large, bright, extremely round, globular cluster.

Fantastic.

8

3.7

NGC 6405 / M6

Scorpius

Large, irregular, round.

--

III 2p*

4.2

NGC 6475 / M7

Scorpius

Very bright.

--

II 2r*

3.3

NGC 6496

Scorpius

Pretty large, moderately extended globular cluster.

Small, quite faint, globular cluster.

12

9.2

NGC 6541

Scorpius

Mod. Large, very bright, globular cluster.

Bright round extremely compressed.

3

6.6

NGC 6388

Scorpius

Very bright, large, round globular cluster.

Small bright globular cluster.

3

6.9

NGC 6121 / M4

Scorpius

Mod. Large, very bright, globular cluster.

--

9

5.9

NGC 6144

Scorpius

Considerably large moderately compressed globular cluster.

Mod. large, mod. Faint globular cluster.

11

9.1

NGC 6093

Scorpius

Very bright, large globular cluster.

Fairly small, quite bright globular cluster.

2

7.2

NGC 6723

Sagittarius

Very large, very little extended globular cluster.

--

7

7.3

NGC 6715 / M54

Sagittarius

Very bright, large, round globular cluster.

--

3

7.7

NGC 6523 / M8

Sagittarius

Very bright, very large, irregular.

Lagoon Nebula.

--

5.0

NGC 6626 / M28

Sagittarius

Very bright, large round.

Small fairly faint globular cluster.

4

6.9

NGC 6656 / M22

Sagittarius

Very bright, very large, round compressed.

Small very bright globular cluster.

7

5.5

NGC 6809 / M55

Sagittarius

Pretty bright, large, round.

Very large bright globular cluster.

11

7.0

Table 1: Southern Hemisphere targets, mostly open/globular clusters, with standard textbook descriptions compared to Mr Johnston's own descriptions. Also listed are the speaker's magnitude estimates, and Shapley classifications. Asterisked classifications are according to Trumpler scheme (for explanation, see Binney and Merrifield pp. 378)1

© 2004 Dominic Ford / The British Astronomical Association.

Ashburn

Latitude:
Longitude:
Timezone:

39.04°N
77.49°W
EDT

Color scheme