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Help me start carbon star observing !

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#1 Voyager 3

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Posted 18 January 2021 - 07:15 AM

Heya I'm in Bortle 8 so it's game of double stars , planets n moons and carbon stars ... I've dipped my toes on first two but haven't started serious carbon star observing .. I would like some advise on how to observe , what exit pupils are required for best overlook and observing tips ...
thanks ,
Best V3 .
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#2 lee14

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Posted 18 January 2021 - 07:54 AM

Look into the AAVSO site. Many of your questions can be addressed here:  https://www.aavso.or...ys=carbon stars

 

Lee

AAVSO


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#3 Knasal

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Posted 18 January 2021 - 08:27 AM

Take a look at the Astronomical League’s Carbon Star Program.

 

Kevin 


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#4 sg6

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Posted 18 January 2021 - 09:28 AM

Carbon stars are dim and Bortle 8 will make it somewhat difficult.

What is the scope?

 

If goto then get the AL list and get the SAO reference and tell the mount to hopefully find a few.

 

Also be aware a few "carbon" stars aren't. Some are big and red and seem to be a carbon star but the spectrum says otherwise. Seems they were included at some time and never been excluded. A google search will also turn up a few lists.


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#5 Paul Sweeney

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Posted 22 January 2021 - 01:39 PM

Bright skies will make observing carbon stars difficult but not impossible. The brighter ones can be observed in a sky lit by a half moon. I use scopes from 70 to 200mm. Many will be obviously red through a 50mm finder scope. I tend to use low power because, to me, the colors are more concentrated. Slightly defocusing the star can help in determining the color. Higher powers darken the background and makes the colors clearer. On any given night you can pick out 10-15 carbon stars without too much trouble. It is interesting to revisit them over time and observe how the changing brightness changes the color. It helps to keep a log book. Hope this helps.
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#6 KMAO

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Posted 23 January 2021 - 10:40 AM

Many carbon stars can be observed with binoculars.
My two favorites are
VX And
U Cam
Both are variable stars
with rather low amplitude
always reachable with 10x50 binocular.
best wishes
KMA
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#7 Dave Mitsky

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Posted 24 January 2021 - 12:41 PM

There's more on carbon stars at the following URLs:

 

https://skyandtelesc...-red1203201401/

 

https://skyandtelesc...g-carbon-stars/

 

http://www.astrosurf...iar2/carbon.htm

 

http://www.nckas.org/carbonstars/


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#8 Rich (RLTYS)

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Posted 26 January 2021 - 03:33 PM

The AL Carbon Star Club is an excellent place to start.


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#9 geminijk

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Posted 04 February 2021 - 05:44 PM

I enjoyed putting together a list of some of my favs that I personally observed that you may enjoy too. Has finder charts and perfect for this time of year!

 

http://attheeyepiece...?q=carbon stars

 

 

Regards,

 

John


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