PortalPortal  HomeHome  CalendarCalendar  FAQFAQ  SearchSearch  MemberlistMemberlist  UsergroupsUsergroups  RegisterRegister  Log in  
Log in
Username:
Password:
Log in automatically: 
:: I forgot my password
Latest topics
» NASA Invites Students to Name Moon-Bound Spacecraft
Constellation Guide GEMINI EmptyTue Oct 04, 2011 1:18 pm by AstroJunkie

» NASA Leads Study of Unprecedented Arctic Ozone Loss
Constellation Guide GEMINI EmptyTue Oct 04, 2011 1:17 pm by AstroJunkie

» Electrical Circuit Between Saturn and Enceladus
Constellation Guide GEMINI EmptyTue Sep 27, 2011 4:00 am by AstroJunkie

» The Big Bang Theory
Constellation Guide GEMINI EmptyTue Sep 27, 2011 3:56 am by AstroJunkie

» subatomic particles breaking the universal speed limit
Constellation Guide GEMINI EmptyMon Sep 26, 2011 10:04 am by andy 'astrojunkie'

» Tatooine system found
Constellation Guide GEMINI EmptyFri Sep 23, 2011 12:36 am by astrolover

» hello
Constellation Guide GEMINI EmptySat Sep 17, 2011 2:53 am by AstroJunkie

» Soyuz undocking
Constellation Guide GEMINI EmptyFri Sep 16, 2011 11:38 am by AstroJunkie

» NASA’s Kepler Mission Discovers a World Orbiting Two Stars
Constellation Guide GEMINI EmptyFri Sep 16, 2011 6:26 am by AstroJunkie

Statistics
We have 126 registered users
The newest registered user is bardokall

Our users have posted a total of 1051 messages in 208 subjects

Share
 

 Constellation Guide GEMINI

Go down 
AuthorMessage
scopeman

scopeman

Posts : 116
Join date : 2011-08-23

Constellation Guide GEMINI Empty
PostSubject: Constellation Guide GEMINI   Constellation Guide GEMINI EmptyFri Aug 26, 2011 5:23 pm

Gemini - The Twins



Pronounced "Jem - in - Eye"



Where to find the constellation



Constellation Guide GEMINI 4i3hytu





Constellation Chart



Constellation Guide GEMINI 2zi4pch





Gemini is another constellation where the majority of DSOs available to the beginner are open clusters. Quite a large 'zodiac' constellation, representing the mythological twin brothers, Castor and Pollux.

Brothers to Helen of Troy - apparantly the ancient Greek words 'kastor'
and 'Polludeukeis' mean literally 'beaver' and 'very sweet' Constellation Guide GEMINI Yikes

The star Castor is a tight double, a good test of amateur optics - Gemini also contains ngc2392, the 'Eskimo Nebula' a beautiful planetary neb - and M35, a fairly large populous open cluster, as well as many other open clusters of various sizes.

Nicely positioned high to the East during Winter and Spring - sweeping overhead, and eventually West, as the night progresses.





M35

The only Messier object in Gemini, quite a rich open cluster, with two smaller open clusters nestled close-by (ngc2158 and Collinder 80)

Constellation Guide GEMINI 44rec74





Collinder 89

Quite large, but very sparsely populated open cluster - often overlooked due to it's proximity to the more well-known M35

Constellation Guide GEMINI 2guk2ew





Eskimo nebula - ngc2392

Beautiful planetary nebula, small, but fairly bright, and easy to find.

Constellation Guide GEMINI 2wn1jy8



However, through an amateur scope, you won't see the colours, this is a more realistic view as seen through the eyepiece.

(I've added Saturn in there for a size comparison)

Constellation Guide GEMINI 2z4l091





Castor

A multiple star system - 3 components are visible at the eyepiece (although there are more)

A and B components are a very tight double, only 3 arcseconds apart - a good test of the optics in a small scope is to 'split' these - you need to see black 'space' between the two components to have successfully split the double.

There's also a third, dim component, just over an arcminute away.

Constellation Guide GEMINI 2qnv3pd







Gemini NGCs (with magnitudes) - from my own "1200 Northern NGCs" list

For those with 'GoTo' or a good chart.

2129 - OC - 6.7

2158 - OC - 8.6

2168 - OC - 5.1 (m35)

2331 - OC - 8.5

2339 - Gal - 11.7

2371 - PN - 13 - 2371 and 2372 are seperate parts

2372 - PN - 13 - of the same dim planetary nebula

2392 - PN - 8.6 (Eskimo nebula - surface brightness 6.7)

2395 - OC - 8

2420 - OC - 8.3
Back to top Go down
View user profile
astrolover

astrolover

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

Constellation Guide GEMINI Empty
PostSubject: Re: Constellation Guide GEMINI   Constellation Guide GEMINI EmptyFri Aug 26, 2011 5:55 pm

Another great guide!!! Thanks for posting it - I look forward to using it!
Back to top Go down
View user profile
TomK

TomK

Posts : 58
Join date : 2011-08-23

Constellation Guide GEMINI Empty
PostSubject: Re: Constellation Guide GEMINI   Constellation Guide GEMINI EmptyFri Aug 26, 2011 5:55 pm

lookin GOOD!
Back to top Go down
View user profile
Clive_D



Posts : 36
Join date : 2011-08-23

Constellation Guide GEMINI Empty
PostSubject: Re: Constellation Guide GEMINI   Constellation Guide GEMINI EmptyFri Aug 26, 2011 5:55 pm

Again nicely done i do enjoy reading and looking through these guides keep it up mate.
Back to top Go down
View user profile
Astrotones



Posts : 23
Join date : 2011-08-23

Constellation Guide GEMINI Empty
PostSubject: Re: Constellation Guide GEMINI   Constellation Guide GEMINI EmptyFri Aug 26, 2011 5:57 pm

Looking very good! It's so detailed, really very helpful guide.
Back to top Go down
View user profile
Sponsored content




Constellation Guide GEMINI Empty
PostSubject: Re: Constellation Guide GEMINI   Constellation Guide GEMINI Empty

Back to top Go down
 
Constellation Guide GEMINI
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
Astronomy Forum :: AstroJunkie :: Observing-
Jump to: