constellation close-up: auriga - orwell astronomical · star clusters m36, m37, m38. 40 theta aur...
Post on 14-Oct-2020
18 Views
Preview:
TRANSCRIPT
1
Constellation Close-Up: Auriga
James Appleton
2
Topics
• Overview of Auriga
• Stars
• Double and multiple stars
• Faint star clusters
• Bright star clusters: M36, M37, M38
• Nebulosity
• Close
3
Overview of Auriga
4
Auriga – Stars to Magnitude 6.0
Galactic
equator
5
Stars
6
Auriga – Stars to Magnitude 8.0
Capella
7
Capella SystemStars shown in correct relative sizes, but not separations
Capella A
13 times solar diam
90 times solar lum
Capella B
7 times solar diam
70 times solar lum
Orbital
period
104 days
100m km
H1
70% solar diam
1% solar lum
H2
70% solar diam
0.04% solar lum
Orbital
period
350 years
4.2 bn km
Distance 11,000 AU (0.2 ly)
Orbital period very long!
8
Auriga – Stars to Magnitude 8.0
Beta
ThetaIota
ZetaEta
Epsilon
9
Digital Camera “Happy Snap”
10
Longer Exposure
11
Capella & Kids - Colour Contrast
12
Under American Skies…
13
Double And Multiple Stars
14
Double & Multiple Stars
Star Magnitudes Sep (“) Observing notes
Struve 698 6.6, 8.7 31
Struve 644 6.7, 7.0, 9.3 1.6, 73 Couldn’t separate close pair
Capella 0.1, 10.0 12 arcmin Couldn’t split fainter star (Capella H)
41 Aur 6.6, 7.0 7.7 Colour contrast: white, yellowish?
Struve 718 7.5, 7.5, 9.2 7.7, 119 A&B identical, very pretty triangle
Theta 2.6, 7.1, 10.6 3.6, 50 Needed high power to split close pair
Epsilon 3.0, 11.7, 12.0 43, 46
26 Aur 6.0, 8.0, 11.5 12.4, 33 Blue tinge to mag 8? Mag 11.5 difficult.
Omega 5.0, 8.0 5.4
15
Auriga – Double & Multiple Stars
16
Double & Multiple Stars
Star Magnitudes Sep (“) Observing notes
Struve 698 6.6, 8.7 31
Struve 644 6.7, 7.0, 9.3 1.6, 73 Couldn’t separate close pair
Capella 0.1, 10.0 12 arcmin Couldn’t split fainter star (Capella H)
41 Aur 6.6, 7.0 7.7 Colour contrast: white, yellowish?
Struve 718 7.5, 7.5, 9.2 7.7, 119 A&B identical, very pretty triangle
Theta 2.6, 7.1, 10.6 3.6, 50 Needed high power to split close pair
Epsilon 3.0, 11.7, 12.0 43, 46
26 Aur 6.0, 8.0, 11.5 12.4, 33 Blue tinge to mag 8? Mag 11.5 difficult.
Omega 5.0, 8.0 5.4
17
Auriga – Double & Multiple Stars
18
Double & Multiple Stars
Star Magnitudes Sep (“) Observing notes
Struve 698 6.6, 8.7 31
Struve 644 6.7, 7.0, 9.3 1.6, 73 Couldn’t separate close pair
Capella 0.1, 10.0 12 arcmin Couldn’t split fainter star (Capella H)
41 Aur 6.6, 7.0 7.7 Colour contrast: white, yellowish?
Struve 718 7.5, 7.5, 9.2 7.7, 119 A&B identical, very pretty triangle
Theta 2.6, 7.1, 10.6 3.6, 50 Needed high power to split close pair
Epsilon 3.0, 11.7, 12.0 43, 46
26 Aur 6.0, 8.0, 11.5 12.4, 33 Blue tinge to mag 8? Mag 11.5 difficult.
Omega 5.0, 8.0 5.4
19
Auriga – Double & Multiple Stars
20
Double & Multiple Stars
Star Magnitudes Sep (“) Observing notes
Struve 698 6.6, 8.7 31
Struve 644 6.7, 7.0, 9.3 1.6, 73 Couldn’t separate close pair
Capella 0.1, 10.0 12 arcmin Couldn’t split fainter star (Capella H)
41 Aur 6.6, 7.0 7.7 Colour contrast: white, yellowish?
Struve 718 7.5, 7.5, 9.2 7.7, 119 A&B identical, very pretty triangle
Theta 2.6, 7.1, 10.6 3.6, 50 Needed high power to split close pair
Epsilon 3.0, 11.7, 12.0 43, 46
26 Aur 6.0, 8.0, 11.5 12.4, 33 Blue tinge to mag 8? Mag 11.5 difficult.
Omega 5.0, 8.0 5.4
21
Auriga – Double & Multiple Stars
22
Double & Multiple Stars
Star Magnitudes Sep (“) Observing notes
Struve 698 6.6, 8.7 31
Struve 644 6.7, 7.0, 9.3 1.6, 73 Couldn’t separate close pair
Capella 0.1, 10.0 12 arcmin Couldn’t split fainter star (Capella H)
41 Aur 6.6, 7.0 7.7 Colour contrast: white, yellowish?
Struve 718 7.5, 7.5, 9.2 7.7, 119 A&B identical, very pretty triangle
Theta 2.6, 7.1, 10.6 3.6, 50 Needed high power to split close pair
Epsilon 3.0, 11.7, 12.0 43, 46
26 Aur 6.0, 8.0, 11.5 12.4, 33 Blue tinge to mag 8? Mag 11.5 difficult.
Omega 5.0, 8.0 5.4
23
Auriga – Double & Multiple Stars
24
Double & Multiple Stars
Star Magnitudes Sep (“) Observing notes
Struve 698 6.6, 8.7 31
Struve 644 6.7, 7.0, 9.3 1.6, 73 Couldn’t separate close pair
Capella 0.1, 10.0 12 arcmin Couldn’t split fainter star (Capella H)
41 Aur 6.6, 7.0 7.7 Colour contrast: white, yellowish?
Struve 718 7.5, 7.5, 9.2 7.7, 119 A&B identical, very pretty triangle
Theta 2.6, 7.1, 10.6 3.6, 50 Needed high power to split close pair
Epsilon 3.0, 11.7, 12.0 43, 46
26 Aur 6.0, 8.0, 11.5 12.4, 33 Blue tinge to mag 8? Mag 11.5 difficult.
Omega 5.0, 8.0 5.4
25
Auriga – Double & Multiple Stars
26
Double & Multiple Stars
Star Magnitudes Sep (“) Observing notes
Struve 698 6.6, 8.7 31
Struve 644 6.7, 7.0, 9.3 1.6, 73 Couldn’t separate close pair
Capella 0.1, 10.0 12 arcmin Couldn’t split fainter star (Capella H)
41 Aur 6.6, 7.0 7.7 Colour contrast: white, yellowish?
Struve 718 7.5, 7.5, 9.2 7.7, 119 A&B identical, very pretty triangle
Theta 2.6, 7.1, 10.6 3.6, 50 Needed high power to split close pair
Epsilon 3.0, 11.7, 12.0 43, 46
26 Aur 6.0, 8.0, 11.5 12.4, 33 Blue tinge to mag 8? Mag 11.5 difficult.
Omega 5.0, 8.0 5.4
27
Auriga – Double & Multiple Stars
28
Double & Multiple Stars
Star Magnitudes Sep (“) Observing notes
Struve 698 6.6, 8.7 31
Struve 644 6.7, 7.0, 9.3 1.6, 73 Couldn’t separate close pair
Capella 0.1, 10.0 12 arcmin Couldn’t split fainter star (Capella H)
41 Aur 6.6, 7.0 7.7 Colour contrast: white, yellowish?
Struve 718 7.5, 7.5, 9.2 7.7, 119 A&B identical, very pretty triangle
Theta 2.6, 7.1, 10.6 3.6, 50 Needed high power to split close pair
Epsilon 3.0, 11.7, 12.0 43, 46
26 Aur 6.0, 8.0, 11.5 12.4, 33 Blue tinge to mag 8? Mag 11.5 difficult.
Omega 5.0, 8.0 5.4
29
Auriga – Double & Multiple Stars
30
Double & Multiple Stars
Star Magnitudes Sep (“) Observing notes
Struve 698 6.6, 8.7 31
Struve 644 6.7, 7.0, 9.3 1.6, 73 Couldn’t separate close pair
Capella 0.1, 10.0 12 arcmin Couldn’t split fainter star (Capella H)
41 Aur 6.6, 7.0 7.7 Colour contrast: white, yellowish?
Struve 718 7.5, 7.5, 9.2 7.7, 119 A&B identical, very pretty triangle
Theta 2.6, 7.1, 10.6 3.6, 50 Needed high power to split close pair
Epsilon 3.0, 11.7, 12.0 43, 46
26 Aur 6.0, 8.0, 11.5 12.4, 33 Blue tinge to mag 8? Mag 11.5 difficult.
Omega 5.0, 8.0 5.4
31
Auriga – Double & Multiple Stars
32
Star Clusters
33
NGC1778NGC1857
NGC1893NGC1907
NGC2281
Fainter Star Clusters
34
NGC2281
Fainter Star Clusters
35
NGC1857
Fainter Star Clusters
36
NGC1778
Fainter Star Clusters
37
NGC1907
Fainter Star Clusters
38
NGC1893
Fainter Star Clusters
39
M36M37
M38
Star Clusters M36, M37, M38
40
Theta Aur
M37
M36
M38
Beta Tau
M36, M37, M38
41
M36, M37, M38
42
M36
Struve 737
43
M37
44
M38
45
Nebulosity
46
Under American Skies, II…
47
Under Spanish Skies
48
IC405 & AE Aur
49
Close
top related