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Seeing open clusters and bright nebula in M31

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#1 Pcbessa

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Posted 23 September 2020 - 05:14 AM

Hello, as many of you I have seen, with my 10", a few Globulars in the Andromeda galaxy, as well as spending some nights in trying to spot some of the blue giant stars in NGC206.

What I want to ask is 3 questions:

1) What are the brightest open clusters can be seen in the Andromeda galaxy?

2) What are the other brightest HII or nebula can be seen besides NGC206?

I saw once the HII region that lies in the other side of M31 relative to NGC206, and a bit towards the direction of M110. But I do not know it's name.

3) Last question: where is the brightest star of M31, outside NGC206?

Thanks!

#2 SNH

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Posted 23 September 2020 - 06:53 AM

Well, Pcbessa, you've come to the right place! Here is a link to my M31 Observing Guide where I have maps to the objects I'm going to reference. Here is what I saw with my 10-inch SCT, grouped by comparative brightness (brightest first):

 

OC   C203

 

OC   C107

OC   C202

OC   C224

OC   C275

OC/H II   C410

OC  BH05
OC   C162

OC/H II   C179

OC/ Star   C205
OC/H II   C259
OC   C311, C312, C313

 

H II/OC   G324 (Pellet 968)

 

H II/OC   C44 (Pellet 7)

 

 

I list their type by visual dominance, meaning with my aperture, if I list 'H II' first, then I was able to see that. Most of the time, nebula are really difficult to see because they are associated with an open cluster - which outshine the nebula that encompasses it.

 

I've researched which are the brightest stars and if you see the one in C205, then are might be seeing the second brightest in the galaxy. Here is a link to my The Stars of NGC 206 article where I take the time to list out the brightest stars above +17.0 (at the very end).

 

Enjoy!

Scott


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#3 beggarly

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Posted 23 September 2020 - 07:21 AM

https://www.astronom...Space/gcm31.htm Scroll down for 'open clusters'.

 

http://koenen.work/d...6&sca=120&src=A


Edited by beggarly, 23 September 2020 - 03:54 PM.



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