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 Constellation Guide LEO

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scopeman

scopeman

Posts : 116
Join date : 2011-08-23

Constellation Guide LEO Empty
PostSubject: Constellation Guide LEO   Constellation Guide LEO EmptyFri Aug 26, 2011 5:34 pm

Leo - The Lion



Pronounced "Lee - Oh"



Where to find the constellation



Constellation Guide LEO 2laet5f





Constellation Chart



Constellation Guide LEO 2gvsl1y





Leo is a quite large and prominent Zodiac constellation which sweeps across the South of the sky throughout the early part of the year.

The 'Lion' shape is quite easy to imagine when looking at the pattern ofstars, and is home to many, many galaxies, including 5 Messier objects, and several ngc-classified galaxies, as well as a fairly bright, and moderately tight double star, and a dimmer, MUCH tighter example that will really test your optics.





M65 and M66 are two galaxies of similar brightness (M66 is the slightly brighter, and larger of the two)

Less than 20 arcminutes apart - mag 9.3 and 8.9 respectively - they make an equilateral triangle with a dimmer (mag 9.5) elongated galaxy - ngc3628 - known collectively as the Leo triplet.

The three galaxies can be seen together in the same widefield view if you have a good sky and 4" aperture or more.



M65

Constellation Guide LEO 2rpw4k9



M66

Constellation Guide LEO 33mxt2a



Leo triplet

Constellation Guide LEO 34ox35i





Similar to M65 and M66 - M95 and M96 (mag 9.7 and mag 9.3 respectively) are two more galaxies that reside close enough to each other to be seen in the same field of view. However, also nearby is M105, an 9th magnitude elliptical galaxy, which has yet another, dimmer galaxy (ngc3384) nestled close by.

All 4 can be seen together if you have at least a 2° field of view - and in fact, there is one more, even dimmer galaxy near M105 and ngc3384 - but you will need plenty of aperture to see the 5th member of this little grouping.



M95

Constellation Guide LEO 4dvwx8n



M96

Constellation Guide LEO 2m440fb



M105

Constellation Guide LEO 2zscih3





Constellation Guide LEO 49bk2dg





As well as those mentioned so far - there are 4 more sub 10th magnitude galaxies in Leo...

NGCs... 2903, 3521, 3607, 3626

(see the chart of Leo - further up)





ALGIEBA

Double star - mag 2.5 and 3.5 - both yellow - 4.4 arcseconds separation



Iota Leonis

VERY tight double star - only 1.7 arcsec separation - both elements white, magnitudes 4 and 7.

The very tight separation, and big difference in brightness, make this an extremely difficult double to split.





Leo NGC galaxiess (with magnitudes) - from my own "1200 Northern NGCs" list

For those with 'GoTo' or a good chart.

2903 - Gal - 9

3193 - Gal - 10.9

3227 - Gal - 10.3

3351 - Gal - 9.7 (M95)

3368 - Gal - 9.3 (M96)

3377 - Gal - 10.4

3379 - Gal - 9.3 (M105)

3384 - Gal - 9.9

3489 - Gal - 10.2

3507 - Gal - 10.9

3521 - Gal - 9

3593 - Gal - 10.9

3607 - Gal - 9.9

3608 - Gal - 10.8

3623 - Gal - 9.3 (M65)

3626 - Gal - 11 (C40)

3627 - Gal - 8.9 (M66)

3628 - Gal - 9.5

3640 - Gal - 10.3

3810 - Gal - 10.6

There are many more galaxies in Leo (73 in my 1200 NGCs list)

I've limited this to those brighter than mag 11 - to keep the size of the list down.
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astrolover

astrolover

Posts : 95
Join date : 2011-08-23
Age : 31

Constellation Guide LEO Empty
PostSubject: Re: Constellation Guide LEO   Constellation Guide LEO EmptyFri Aug 26, 2011 6:15 pm

Very nicely laid out Smile
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TomK

TomK

Posts : 58
Join date : 2011-08-23

Constellation Guide LEO Empty
PostSubject: Re: Constellation Guide LEO   Constellation Guide LEO EmptyFri Aug 26, 2011 6:16 pm

WOW! i know the big dipper, cassiopia, orion and my next constellation is leo! thank you Very Happy
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ANGELSKY



Posts : 20
Join date : 2011-08-23
Age : 30

Constellation Guide LEO Empty
PostSubject: Re: Constellation Guide LEO   Constellation Guide LEO EmptyFri Aug 26, 2011 6:16 pm

This is really great - even for those of us without telescopes!
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Starmonger



Posts : 5
Join date : 2011-08-23

Constellation Guide LEO Empty
PostSubject: Re: Constellation Guide LEO   Constellation Guide LEO EmptyFri Aug 26, 2011 6:17 pm

Nice guide. As a beginner, I will definitely use it.
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Suziegr

Suziegr

Posts : 4
Join date : 2011-08-26

Constellation Guide LEO Empty
PostSubject: Re: Constellation Guide LEO   Constellation Guide LEO EmptyFri Aug 26, 2011 6:18 pm

Have always thought these guides looked a bit daunting but I think I'll try to make more sense of them. I massively under-estimated how much I'd have to learn before embarking on my new hobby. Over the past few weeks I've learnt so much about scopes, eyepieces, astro imaging and that it was never this cloudy before I bought my telescope!

Some of you guys must live and breath this stuff Very Happy Perhaps I'll catch you up someday... Maybe...
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okeeft01



Posts : 6
Join date : 2011-08-23

Constellation Guide LEO Empty
PostSubject: Re: Constellation Guide LEO   Constellation Guide LEO EmptyFri Aug 26, 2011 6:20 pm

Suziegr wrote:
Have always thought these guides looked a bit daunting but I think I'll try to make more sense of them. I massively under-estimated how much I'd have to learn before embarking on my new hobby. Over the past few weeks I've learnt so much about scopes, eyepieces, astro imaging and that it was never this cloudy before I bought my telescope!

Some of you guys must live and breath this stuff Very Happy Perhaps I'll catch you up someday... Maybe...

I'm in the same situation as you
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Suziegr

Suziegr

Posts : 4
Join date : 2011-08-26

Constellation Guide LEO Empty
PostSubject: Re: Constellation Guide LEO   Constellation Guide LEO EmptyFri Aug 26, 2011 6:20 pm

okeeft01 wrote:
Suziegr wrote:
Have always thought these guides looked a bit daunting but I think I'll try to make more sense of them. I massively under-estimated how much I'd have to learn before embarking on my new hobby. Over the past few weeks I've learnt so much about scopes, eyepieces, astro imaging and that it was never this cloudy before I bought my telescope!

Some of you guys must live and breath this stuff Very Happy Perhaps I'll catch you up someday... Maybe...

I'm in the same situation as you

Ha! It's good to know I'm not alone! Very Happy

Have tried not to get too bogged down with excess info and am trying to apply every I learn as I learn it but the weather isn't helping much. I'm quite adept at balancing my scope now though as that's one things I CAN do on cloudy nights Very Happy
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scopeman

scopeman

Posts : 116
Join date : 2011-08-23

Constellation Guide LEO Empty
PostSubject: Re: Constellation Guide LEO   Constellation Guide LEO EmptyFri Aug 26, 2011 6:21 pm

Indeed there is a wealth of information to take in! Learning the night sky is NOT an overnight job. Set yourself a target - say one constellation per observing session using these charts. You'll learn the main and interesting constellations in a respectable amount of time. Added to which, don't forget that some of the 88 constellations never rise above the horizon for UK & US observers - and others are so faint and dull, they just ain't worth learning about! Wink
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