constellation close-up: auriga - orwell astronomical · star clusters m36, m37, m38. 40 theta aur...
TRANSCRIPT
![Page 1: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/1.jpg)
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Constellation Close-Up: Auriga
James Appleton
![Page 2: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/2.jpg)
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Topics
• Overview of Auriga
• Stars
• Double and multiple stars
• Faint star clusters
• Bright star clusters: M36, M37, M38
• Nebulosity
• Close
![Page 3: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/3.jpg)
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Overview of Auriga
![Page 4: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/4.jpg)
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Auriga – Stars to Magnitude 6.0
Galactic
equator
![Page 5: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/5.jpg)
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Stars
![Page 6: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/6.jpg)
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Auriga – Stars to Magnitude 8.0
Capella
![Page 7: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/7.jpg)
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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!
![Page 8: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/8.jpg)
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Auriga – Stars to Magnitude 8.0
Beta
ThetaIota
ZetaEta
Epsilon
![Page 9: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/9.jpg)
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Digital Camera “Happy Snap”
![Page 10: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/10.jpg)
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Longer Exposure
![Page 11: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/11.jpg)
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Capella & Kids - Colour Contrast
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Under American Skies…
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Double And Multiple Stars
![Page 14: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/14.jpg)
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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
![Page 15: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/15.jpg)
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Auriga – Double & Multiple Stars
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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
![Page 17: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/17.jpg)
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Auriga – Double & Multiple Stars
![Page 18: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/18.jpg)
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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
![Page 19: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/19.jpg)
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Auriga – Double & Multiple Stars
![Page 20: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/20.jpg)
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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
![Page 21: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/21.jpg)
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Auriga – Double & Multiple Stars
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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
![Page 23: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/23.jpg)
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Auriga – Double & Multiple Stars
![Page 24: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/24.jpg)
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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
![Page 25: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/25.jpg)
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Auriga – Double & Multiple Stars
![Page 26: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/26.jpg)
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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
![Page 27: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/27.jpg)
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Auriga – Double & Multiple Stars
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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
![Page 29: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/29.jpg)
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Auriga – Double & Multiple Stars
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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
![Page 31: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/31.jpg)
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Auriga – Double & Multiple Stars
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Star Clusters
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NGC1778NGC1857
NGC1893NGC1907
NGC2281
Fainter Star Clusters
![Page 34: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/34.jpg)
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NGC2281
Fainter Star Clusters
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NGC1857
Fainter Star Clusters
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NGC1778
Fainter Star Clusters
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NGC1907
Fainter Star Clusters
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NGC1893
Fainter Star Clusters
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M36M37
M38
Star Clusters M36, M37, M38
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Theta Aur
M37
M36
M38
Beta Tau
M36, M37, M38
![Page 41: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/41.jpg)
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M36, M37, M38
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M36
Struve 737
![Page 43: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/43.jpg)
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M37
![Page 44: Constellation Close-Up: Auriga - Orwell Astronomical · Star Clusters M36, M37, M38. 40 Theta Aur M37 M36 M38 Beta Tau M36, M37, M38. M36, M37, M38 41. M36 42 Struve 737. M37 43](https://reader033.vdocuments.site/reader033/viewer/2022053022/604c395272aa9050280323fe/html5/thumbnails/44.jpg)
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M38
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Nebulosity
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Under American Skies, II…
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Under Spanish Skies
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IC405 & AE Aur
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Close