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Messier 81-82

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2 weeks 5 days ago #107021 by mariosi
mariosi created the topic: Messier 81-82
Messier 81
was first discovered by Johann Elert Bode on December 31, 1774 Consequently, the galaxy is sometimes referred to as "Bode's Galaxy". In 1779, Pierre Méchain and Charles Messier reidentified Bode's object, which was subsequently listed in the Messier Catalogue.(Wikipedia)

Constellation Ursa Major
Right ascension09h 55m 33.2s
Declination+69° 3′ 55″
Apparent dimension(V)26.9 × 14.1 moa
Apparent magnitude(V)6.94
Characteristics
TypeSA(s)ab, LINER

Messier 82
was first discovered by Johann Elert Bode on December 31, 1774 together with M81; he described it as a "nebulous patch", about 0.75 deg away from M81, "very pale and of elongated shape". In 1779, Pierre Méchainindependently rediscovered both galaxies and reported them to Charles Messier, who added them to his catalog.(Wikipedia)

Constellation Ursa Major
Right ascension09h 55m 52.2s
Declination+69° 40′ 47″
Redshift203±4 km/s
Distance11.4-12.4 Mly (3.5-3.8 Mpc)
Apparent magnitude (V)8.41
Characteristics
TypeI0
Size~37,000ly in diameter
Apparent size (V)11′.2 × 4′.3

SCOPE : Dob 10 inches solid tube 1200/4.7
EYEPIECE : Meade 26mm 2inches QX 70°
DATE/DAY: 6/4/18 FRIDAY
TIME : 22:00 local time
LOCATION : Backyard

Thanks for looking
Marios

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The following user(s) said Thank You: Paddy Stack, michael_murphy, lunartic, flt158

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2 weeks 5 days ago #107022 by flt158
flt158 replied the topic: Messier 81-82
What an excellent sketch of these 2 galaxies, Marios.

It has been some years since I observed them.

Clear skies,

Aubrey.

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