This lab is a bit problematic when done in the Fall semester. You need to make a decent image of of 4 different galaxies. In the Fall semester, there are few good galaxy choices that are visible from Athens. Late in the semester (or very late in the evening early in the semester), you should try to image M31 and M33 (See table below or pull up the GalaxyLab file in ACE). The first one is very easy (you can see it easily in the finder scope), the other is not so easy, but it's not hard, either. Early in the semester, I would also try M101 in Ursa Major might be too low by the middle of the semester, though. Some of the others like NGC 6946, M101, NGC 147 and NGC 185 are more of a challenge. You will just have to pick them depending on when you observe and how dark and clear the night is As you can see from the the right ascensions in the table below the lab is much easier in the spring.
Center the galaxy nicely and take a exposure in V, R and I. If you have to expose longer than one minute you might want to make sure you have the track rate adjusted so you don't get drift during the exposure.
|
Name |
Nickname |
RA h |
m |
s |
DEC d |
m |
s |
|
NGC185 |
|
00 |
39 |
00 |
48 |
20 |
|
|
NGC147 |
|
00 |
33 |
12 |
48 |
30 |
|
|
M110 |
|
00 |
40 |
22 |
41 |
41 |
07 |
|
M31 |
ANDROMEDA |
00 |
42 |
44. |
41 |
16 |
09 |
|
M33 |
TRIANGULUM |
01 |
33 |
51 |
30 |
39 |
36 |
|
M74 |
|
01 |
36 |
41 |
15 |
46 |
59 |
|
M77 |
CETUS A |
02 |
42 |
40 |
00 |
00 |
48 |
|
M95 |
|
10 |
43 |
57 |
11 |
42 |
12 |
|
M96 |
|
10 |
46 |
45 |
11 |
49 |
10 |
|
M105 |
|
10 |
47 |
49 |
12 |
34 |
54 |
|
M65 |
|
11 |
18 |
55 |
13 |
05 |
32 |
|
M66 |
|
11 |
20 |
15 |
12 |
59 |
21 |
|
M61 |
|
12 |
21 |
55 |
04 |
28 |
28 |
|
M49 |
|
12 |
29 |
46 |
07 |
59 |
59 |
|
M87 |
VIRGO A |
12 |
30 |
49 |
12 |
23 |
28 |
|
M104 |
SOMBRERO |
12 |
39 |
59 |
-11 |
37 |
23 |
|
M94 |
|
12 |
50 |
52 |
41 |
07 |
09 |
|
M64 |
BLACKEYE |
12 |
56 |
43 |
21 |
41 |
00 |
|
M63 |
SUNFLOWER |
13 |
15 |
49 |
42 |
01 |
46 |
|
M51 |
WHIRLPOOL |
13 |
29 |
52 |
47 |
11 |
40 |
|
M101 |
PINWHEEL |
14 |
03 |
12 |
54 |
20 |
53 |
|
M102 |
|
15 |
06 |
29 |
55 |
45 |
47 |
|
NGC6946 |
|
20 |
34 |
48 |
60 |
09 |
|