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Case 270 observed

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#1 flt158

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Posted 27 September 2020 - 07:46 AM

Hello, everyone. 

It's great to read about quite a number of observed carbon stars here on the Observational Astrophysics Forum in recent days and nights. 

Please keep them coming! Thank you. waytogo.gif

 

Here is a report of the latest carbon star I observed which has the designation Case 270.

It is less than 30 arc minutes from another carbon star - WZ Cassiopeiae and is right next to SAO 35999 which in turn has a magnitude of +8.8.

My telescope is a William Optics 158 mm F/7 apochromatic refractor which is placed on a Berlebach Planet altazimuth mount. 

I was observing in my Bortle 9 back garden as the temperatures went from 3 degrees to 0 degrees Celsius. 

There was no wind at all thankfully.

 

I had been challenged by Steve Smith to observe Case 270 over on the Double Star Forum. 

As he had drawn my attention to it, I soon noticed what a tough time I was going to have to actually see it. 

You see, its magnitude is +12.8. I don't believe it varies at all. 

According to Guide 9.1 DVD it has another designation which is 3UC-001081.

Simbad has other designations, but I won't mention them here as they are not well known. 

The Right Ascension of Case 270 is 00 h 02 m 18.8"

The Declination is 59 degrees 58 minutes 07.54".

So it is firmly located in Cassiopeia.  

Its spectral class is C4. 

And at a magnification of 280X I could just about see Case 270. 

My eyepiece is a William Optics Uwan 4 mm.

Its colour through my apo was orange at that power. 

I could not see the star at 225X. 

It is my 11th observed carbon star in Cassiopeia - and my 88th overall. 

 

Therefore if any of you do seek out Case 270 you will most likely need a good aperture telescope and a very clear sky with no wind. 

 

Thank you reading my report. 

Comments, corrections, images and even sketches are most welcome. 

 

Clear skies from Aubrey. 



#2 KMAO

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Posted 27 September 2020 - 08:57 AM

Thanks Aubrey for your report
and for placing the position of CASE 270.
3UC 300-001081 is also GSC 3664 484.
Best regards
KMA
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#3 flt158

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Posted 27 September 2020 - 09:15 AM

Ah yes, KMA. 

I do come across those GSC designations sometimes on Simbad and Guide 9.1. 

Thank you very much, friend. 

 

Aubrey. 



#4 Rich5567

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Posted 29 September 2020 - 01:24 PM

Hi Aubrey,

 

WZ Cas in on my variable observing programme, I've being looking at WZ nearly every clear night for nigh on twenty years. Always a nice sight but difficult to estimate with it been so red.

 

Never seen Case 270 though, I'll be on WZ in half an hour or so as I'm about to go out while its clear. If I get time inbetween variables I'll seek it out.

 

Cheers,

 

Rich.


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#5 flt158

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Posted 29 September 2020 - 01:32 PM

You should have no problems seeing Case 270 with your scope, Rich.waytogo.gif  

It will be interesting to see what magnification you will need to see it. scratchhead2.gif  

 

We have cloudy skies over here in Ireland on Tuesday night with rain coming after midnight. 

 

Best regards from Aubrey. 


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#6 Rich (RLTYS)

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Posted 02 October 2020 - 03:58 PM

Took this image last night (10/2/20) of Case 270 with the Slooh Canary 2 WF scope. Image shows Case 270 as a beautiful reddish/orange star.

Attached Thumbnails

  • Case 271 Cas C2wf 10-2-20 reduced.png

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#7 flt158

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Posted 03 October 2020 - 07:48 AM

Hello, Richard.

I am completely captivated by your most breathtakingly marvellous image of Case 270 is Cassiopeia.  

The carbon is truly "alive" with its true colour here. 

You clearly have an excellent Bortle standard at your location unlike what I have to endure when I'm seeking for a 12.8 magnitude star. 

 

Thank you very much for providing the rest of us with this beautiful image! waytogo.gif

I also admire your quote at the end "I want to do more than just look", Rich.  

 

Clear skies from Aubrey.  




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