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C* 3239 observed

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#1 flt158

flt158

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Posted 07 March 2021 - 06:02 PM

Hello, all carbon star admirers. 

 

On Sunday 7th March 2021 I set up my William Optics 158 mm F/7 apochromatic refractor in my back garden. 

The Sun had set at 18.14 UT. 

The air temperature was 2 degrees Celsius. 

But there was no wind at all. 

Within 5 minutes after sunset I found Aldebaran. It makes me wonder if I could spot Alpha Tauri in my William Optics 70 mm F/6 apochromatic refractor well before sunset. 

 

Anyway, I had the desire to seek out my 6th observed carbon star in Taurus which has the designation C* 3239.  

I discovered on Simbad another alternative designation which is TYC 659-631-1. 

My Guide 9.1 DVD gives the same star one other designation: GSC 659 631. 

The Right Ascension is: 03 hours 59 minutes 36.81". 

The Declination is: +08 degrees 29 minutes 0.71". 

There is no problem with the spectral class. 

It's either C or R. 

This carbon star is seriously faint. 

The magnitude is +11.6. 

I did somehow manage to spot it at a fairly low 112X. (There was no Moon visible.)

At that power the star was roughly halfway between TYC 659 1275 (mag = 9.8) and TYC 659 1081 (mag = 10.4). 

However I started to notice its tangy orange colour at 167X and 225X. 

But at that point C* 3239 was completely alone in the field of view. 

 

In closing I am delighted to say that this carbon star is the 98th I have observed. 

 

Clear skies, 

 

Aubrey.  


  • cildarith, okiestarman56, Astrojensen and 3 others like this

#2 cildarith

cildarith

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Posted 09 March 2021 - 02:46 PM

Nice catch Aubrey!  Congratulations on your 98th carbon star. :)


  • flt158 likes this


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