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Carbon Stars

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#1 Older Padawan

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Posted 07 September 2020 - 09:38 PM

Not sure where I should put this  so thought I'd try it here. Just wondering if there was a forum on here for Carbon Stars. 



#2 Cames

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Posted 07 September 2020 - 10:45 PM

Observing/

Observational Astrophysics:
A place to record your methods and observations that relate to stellar dynamics and evolution, including variable and carbon stars. Spectroscopy, photometry and radio astronomy are particularly welcome.

 

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C


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#3 Older Padawan

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Posted 08 September 2020 - 09:36 AM

Thank you for the information



#4 spereira

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Posted 08 September 2020 - 10:56 AM

Moving to Observational Astrophysics ...

 

smp



#5 Paul Sweeney

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Posted 13 September 2020 - 02:21 AM

I love finding carbon stars. They are becoming my favorite targets to observe. But the threads here are way too technical for me. Is there a place for us "regular Joe" people who just want to observe?
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#6 KMAO

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Posted 13 September 2020 - 08:16 AM

Very good list of carbon stars is in

"Observers Handbook" page 295.

Published yearly by RASC

(Royal Astronomical Society of Canada).

 

With Guide9

(software published by Project Pluto)

you are set for life.

 

hope this help

KMA


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#7 flt158

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Posted 13 September 2020 - 09:09 AM

I love finding carbon stars. They are becoming my favorite targets to observe. But the threads here are way too technical for me. Is there a place for us "regular Joe" people who just want to observe?

Whatever carbon star you have observed - please mention them here on this forum. 

I adore them too. 

If you check back in recent times, you might come across some carbons which I have observed and greatly admire in constellations such as Andromeda and Cassiopeia. 

 

Therefore let those who wish to be technical do so. 

But normal observers ought to be very welcome to share their experiences also.

 

So bring it on, Paul! waytogo.gif

 

And please do describe the colours you see of these enigmatic stars. 

Magnitudes and magnifications are hugely welcome. 

 

I, for one, will be following your reports!!bounce.gif  

 

Clear skies from Aubrey.  


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#8 hambone20

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Posted 13 September 2020 - 02:10 PM

This thread should have moved to General Astronomy, General Observing.



#9 Cames

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Posted 13 September 2020 - 06:10 PM

The Second Edition of 'Sky & Telescope's Pocket Sky Atlas' has added a table of 53 carbon stars and has their location pinpointed on charts.  See description in Paragraph 5 (link).

 

Some much more expensive atlases don't have such carbon star identifications. 

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C


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#10 BrettG

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Posted 13 September 2020 - 07:47 PM

The Astronomy League has a "Carbon Star" award - https://www.astrolea...serving-program

 

You don't need to be a member of the League or Club to get the list of the targets.  It is 100 of them.  Not sure how the list compares to the RASC list.


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#11 KMAO

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Posted 14 September 2020 - 06:57 AM

RASC list does have about 124 carbon variables

and is almost the same...

Interestingly

almost nobody is listing carbon variable PQ Cep

which is at present close to maximum.....

best wishes

KMA


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#12 flt158

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Posted 14 September 2020 - 08:47 AM

Hi KMA. 

 

I am happy to say that www.aavso.org do list PQ Cephei as a carbon star on the VSX Forum. 

 

Clear skies, 

 

Aubrey. 



#13 Mike McShan

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Posted 14 September 2020 - 10:59 AM

The Astronomy League has a "Carbon Star" award - https://www.astrolea...serving-program

 

You don't need to be a member of the League or Club to get the list of the targets.  It is 100 of them.  Not sure how the list compares to the RASC list.

It’s a fun list to work your way through. I’ve observed 99 and only need HD 16115 in Cetus to finish. Fortunately, it’s coming back in view in the early evening this fall. I’ll have to check out the RASC list now. 

 

Clear skies, Mike


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#14 KMAO

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Posted 15 September 2020 - 12:29 AM

Hi Aubrey

It is true VSX will give you detail info about

a lot of variable stars

but to my best knowledge there is

no AAVSO list of carbon stars.

It is also true I do not know AAVSO website

very well.....

Best Regards

KMA


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#15 flt158

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Posted 15 September 2020 - 10:08 AM

Ah yes, KMA. 

I agree with you that www.aavso.org does not list a complete list of carbon stars. 

But there is a way to list most variable carbon stars in every constellation. 

I believe Beggarly showed us how to accomplish that some time ago. 

 

For those interested Goggle www.aavso.org first.

2. Find Variable Stars on the Home Page.

3. Scroll down to Variable Star Index (VSX). 

4. Click on Search.

5. Click on More. 

6. Then click on More again. 

7. Enter in the name of the constellation. 

8. Go down to Variability Type and enter %

9. Enter C% in the Spectral Type box. 

10. Lastly click on Search. 

 

And away you go. Have fun!

 

Of course, there are carbon stars which are not variable. 

But we can check them out on Simbad and VizieR. 

 

Very best regards from Aubrey. waytogo.gif


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#16 Older Padawan

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Posted 17 September 2020 - 05:53 PM

I love finding carbon stars. They are becoming my favorite targets to observe. But the threads here are way too technical for me. Is there a place for us "regular Joe" people who just want to observe?

Wow Paul your right. There is a ton of technical stuff here. I love reading (what I can understand) some of it but I get lost rather quickly. These stars seem to reach out and pull you in. Here's to many Carbon Star evenings. Clear Skies


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#17 hambone20

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Posted 24 September 2020 - 12:07 AM

I ordered and received the guide for the carbon star AL observing program.  Now I'm busy adding them into my Jumbo Pocket Sky Atlas.  Gotta do something with all the clouds and smoke.  This should be a fun endeavor since recently observing  V Aquilea for the first time and going gaga over the color.


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#18 flt158

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Posted 24 September 2020 - 08:32 AM

Good man, Hambone 20. 

There is plenty of time to get yourself ready to hunt for carbon stars. 

I do hope those California fires will be fully extinguished very soon. 

 

V Aquilae is an absolute stunner! waytogo.gif

How would you describe its colour in your own words? 

I'm just interested. 

 

Best regards from Aubrey. 



#19 hambone20

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Posted 24 September 2020 - 10:26 AM

Just a very deep red, like garnet or even blood (but I don't like to use that).  I've only been observing for about a year and a half and didn't expect a color like that.  I've seen blue, white, orange and yellow stars but red was unexpected.


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#20 flt158

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Posted 24 September 2020 - 12:42 PM

Good man, Hambone!

Thank you for that excellent observation. 

It's always a real thrill to observe a very deep red star instead of a deep orange star.

As an owner of an apochromatic refractor I generally see more of the latter. 

But I have seen a genuinely red star, e.g, TT Canum Venaticorum. 

 

Clear skies from Aubrey. 



#21 Rich (RLTYS)

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Posted 25 September 2020 - 03:03 PM

Good man, Hambone 20. 

There is plenty of time to get yourself ready to hunt for carbon stars. 

I do hope those California fires will be fully extinguished very soon. 

 

V Aquilae is an absolute stunner! waytogo.gif

How would you describe its colour in your own words? 

I'm just interested. 

 

Best regards from Aubrey. 

I looked up my notes on V Aql and with my 10" refl, at 38x, I described the color as "An impressive looking reddish/orange star in a starry field of view.


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#22 flt158

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Posted 25 September 2020 - 06:34 PM

Thank you, Rich. 

It's good checking out your reports. 

 

Clear skies from Aubrey.  



#23 Jsquared

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Posted 25 September 2020 - 08:15 PM

I love carbon stars. Great thread
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#24 Chris K

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Posted 25 September 2020 - 10:27 PM

Observed my first carbon star and am hooked.

 

HIP107242 in Cygnus. (RV Cyg; mag 8.25)

 

I would describe it as a blood red solitaire.

 

I viewed it at 180x to get the background sky very black.

 

So cool. Figuratively and literally!


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#25 flt158

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Posted 26 September 2020 - 07:15 AM

Well done, Chris K. 

RV Cygni varies from 7.5 down to 12.4. 

It's one carbon star I have not yet observed. 

Super report by you!

Thank you. waytogo.gif

 

Clear skies, 

 

Aubrey. 




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