Brett's CarbonStar Hunt - October 2021

Brett's Monthly Carbon Star Hunt Challenge

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Brett's CarbonStar Hunt - October 2021

#1

Post by KingNothing13 »

Hello and welcome to the October 2021 Edition of "Brett's Carbon Star Hunt". I hope that everyone is having a good autumn or spring, depending on where you are!

I recently joined a local astronomy club which also has membership in the Astro League, so I picked up the AL Carbon Star Program booklet. While I have been using their list all along, it will give a little more info on the stars, etc. I also plan on, eventually, submitting for their program completion, etc. So we will see how that goes! I've already learned that not all Carbon Star's are red - this month's targets has a white one - every once in-a-while, I will throw a curve ball! :lol:

Anyway, on to the targets for this month!



HD 26 (SAO 109003) +8.2 - 8.3
Not a variable star, so nothing in the AAVSO.

From SkySafari: HD 26 is a 8th magnitude Star appearing in the constellation Pisces. It is 1091 light years from our solar system. It is a orange giant of spectral type G5:III:CH. Its surface temperature is 5050 Kelvins - 12% cooler than the Sun's - and it is 10.4 times the Sun's diameter in size. This star's total energy output, or luminosity, is 63 times the Sun's, and it has a mass of 1.1 Solar masses.

AL note: No apparent color - appears mostly white with a possible yellow tinge.

HD 223392 (SAO 128396) +8.5 - 8.8
Also not a variable.

From SkySafari: HD 223392 is a 8th magnitude Star appearing in the constellation Pisces. It is 843 light years from our solar system. It is a orange-red giant of spectral type C-R3- III C2 4 CH3.5. Its energy output is 27 times the Sun's luminosity.

AL Note: Light reddish-orange in color



CY Cyg +7.9 - 8.4
Data: https://www.aavso.org/vsx/index.php?vie ... &oid=11045

Observations: https://app.aavso.org/webobs/results/?s ... _types=vis
{There's one observation in there, from August 2019.}

From SkySafari:
CY Cygni is a 8th magnitude Variable Star appearing in the constellation Cygnus. It is 398 light years from our solar system. It is a red star of spectral type M2p. Its energy output is 5.8 times the Sun's luminosity.

AL Note: Yellowish-Orange in color.
-- Brett

Scope: Apertura AD10 with Nexus II with 8192/716000 Step Encoders
EPs: ES 82* 18mm, 11mm, 6.7mm; GSO 30mm
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 75; Herschel 400: 30; Caldwell: 12; AL Carbon Star List: 16
Brett's Carbon Star Hunt

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Re: Brett's CarbonStar Hunt - October 2021

#2

Post by Graeme1858 »

Thanks for that Brett.

We have clear skies forecast here for tonight. I'll get my sexy new binoculars out to see If I can spot these three.

Whilst my star chart book is still put away in the loft, I tried inverting a Stellarium screen dump to print for the September Challenge. But the print out was a tad poor! I'll take the laptop out with me for this one!

Regards

Graeme
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Re: Brett's CarbonStar Hunt - October 2021

#3

Post by KingNothing13 »

The first two are both in Pisces, and are very close to each other, so hopefully you can get them both at the same time.
-- Brett

Scope: Apertura AD10 with Nexus II with 8192/716000 Step Encoders
EPs: ES 82* 18mm, 11mm, 6.7mm; GSO 30mm
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 75; Herschel 400: 30; Caldwell: 12; AL Carbon Star List: 16
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Re: Brett's CarbonStar Hunt - October 2021

#4

Post by helicon »

Thanks for this Brett. I also have a good evening weather forecast for the next couple of days. Hopefully I can take a crack at some of them!
-Michael
Various scopes, 10" Zhumell Dob f/4.9, ES AR152 f/6.5, AWB 5.1" Onesky newt, Oberwerk 25x100 binos, two eyeballs. Camera: ZWO ASI 120
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Re: Brett's CarbonStar Hunt - October 2021

#5

Post by Graeme1858 »

Well the two in Pisces were behind my house! But CY Cyg was almost at the zenith and with Deneb as a place marker in the same field of view, the location was easy to find! CY Cyg was not though! I know I was looking directly at it as I had Stellerium turned down dim on a laptop on a table next to me. I could see the V formed by 55 Cyg, the 4 stars above and the one below. I would like to think I caught a glimpse but it was probably just wishful thinking!

56 Cyg, in the same view, is the left eye of the Pelican, so I had a look at him for a while!

Not hugely successful for spotting carbon stars but lots of fun looking!

Thanks Brett.

Regards

Graeme
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Celestron 9.25 f10 SCT, CGX mount.
ZWO ASI294MC Pro, Canon 600D, Altair GPCAM2 290C.
Celestron 80mm Guidescope, QHY5-II Mono.
APM 11x70 ED APO Binoculars.
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Re: Brett's CarbonStar Hunt - October 2021

#6

Post by KingNothing13 »

At least you got out there Graeme, and that's what make is fun. :) Hopefully you can try again later in the month!
-- Brett

Scope: Apertura AD10 with Nexus II with 8192/716000 Step Encoders
EPs: ES 82* 18mm, 11mm, 6.7mm; GSO 30mm
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 75; Herschel 400: 30; Caldwell: 12; AL Carbon Star List: 16
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Re: Brett's CarbonStar Hunt - October 2021

#7

Post by Graeme1858 »

KingNothing13 wrote: Sat Oct 02, 2021 12:51 pm At least you got out there Graeme, and that's what make is fun. :) Hopefully you can try again later in the month!

I'll be getting the telescope back out the loft soon. If I leave it till Pisces is to the South NINA will find them for me!

Regards

Graeme
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Click Here for the AP Processing Challenge!
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Celestron 9.25 f10 SCT, CGX mount.
ZWO ASI294MC Pro, Canon 600D, Altair GPCAM2 290C.
Celestron 80mm Guidescope, QHY5-II Mono.
APM 11x70 ED APO Binoculars.
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Re: Brett's CarbonStar Hunt - October 2021

#8

Post by kt4hx »

Nice list Brett, appreciate you taking the time to put it together each month.
Alan

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