Brett's Carbon Star Hunt - April 2021

Brett's Monthly Carbon Star Hunt Challenge

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KingNothing13
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Brett's Carbon Star Hunt - April 2021

#1

Post by KingNothing13 »

Hello all, and welcome to the April 2021 edition of "Brett's Carbon Star Hunt". I hope everyone is easing into Spring (or Autumn) well, and I hope everyone is staying safe.

On to this months targets: (And yes, we are rapidly approaching Virgo and Ophiuchus season!)

SS Vir - Range 6.0 - 9.6: Data from the AAVSO can be found here. There are NO visual observations (at least that will load) for the last year in the AAVSO WebObs database. It crashes whenever I try to find any.

V Oph - Range: 7.3 - 11.6: Data can be found here, and observations can be found here. This is also a target that I have observed a couple of times in the past (both 7 (!!!) years ago). Fro my notes:
8/17/2014: Faint red bewtween two others in a 12-6 pattern. Carbon Star.
8/26/2014: Somber red star, "still" in a 12-6 pattern with 2 others. Was unsure with previous observation. While observing meteor streaked across FOV. Took a few minutes for the color to come out while observing.
RR Her - Range: 8.8 - 13.5 (a dimmer target!) - Data can be found here, and observations here.

I hope most people who are interested can get out and observe these stars - they are beautiful to look at.

Maybe with the weather picking up, I will be able to get out a little this month - it would be nice to check out the Virgo Cluster - something I have YET to observe!
-- Brett

Scopes:
Primary: Apertura AD10 with ES 82* 18mm (69x), 11mm (114x), & 6.7mm (187x); Nexus II with 8192/716000 Step Encoders
G-n-G: Orion GoScope II 70mm "Travel Scope" with Orion 25mm Kellner (16x), Orion 10mm Kellner (40x)
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 65; Herschel 400: 26; Caldwell: 6
Carbon Star Hunt April 2021

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Graeme1858
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Re: Brett's Carbon Star Hunt - April 2021

#2

Post by Graeme1858 »

Thanks Brett, spring is here, the skies might clear!

Regards

Graeme
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Re: Brett's Carbon Star Hunt - April 2021

#3

Post by Gordon »

I'm going to go LIVE with this tonight and see if I can capture them.

8:30pm MST (2:30 AM Sunday, Greenwich Mean Time (GMT) I will post a link in the AP Live group email.

If you wish to join the event, you can sign up to be notified, here's how: viewtopic.php?f=86&t=17349
Gordon
Scopes: Explore Scientific ED80CF, Skywatcher 254N, Orion ST80, Orion Atlas EQ-g mount, Orion SSAG guider. Baader MPCC MkIII coma corrector, Vixen 70mm refractor. Lunt LS35THa solar scope. Skywatcher EQ5pro mount. Imagers: ZWO ASI1600 MM Cool, ZWO ASI533mc-Pro, ZWO ASI174mm-C (for use with my Quark chromosphere), ZWO ASI120MC Filters: LRGB, Ha 7nm, O-III 7nm, S-II 7nm Eyepieces: a few, Primary software: Cartes du Ciel, EQMOD, SGP, Nebulosity, Photoshop, StarTools V1.4
Blog: http://ghswen.blogspot.com/
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Re: Brett's Carbon Star Hunt - April 2021

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Post by KingNothing13 »

Gordon wrote: Sat Apr 03, 2021 5:37 pm I'm going to go LIVE with this tonight and see if I can capture them.

8:30pm MST (2:30 AM Sunday, Greenwich Mean Time (GMT) I will post a link in the AP Live group email.

If you wish to join the event, you can sign up to be notified, here's how: viewtopic.php?f=86&t=17349
I don't think I'll be able to join - but let me know how it goes!
-- Brett

Scopes:
Primary: Apertura AD10 with ES 82* 18mm (69x), 11mm (114x), & 6.7mm (187x); Nexus II with 8192/716000 Step Encoders
G-n-G: Orion GoScope II 70mm "Travel Scope" with Orion 25mm Kellner (16x), Orion 10mm Kellner (40x)
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 65; Herschel 400: 26; Caldwell: 6
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Gordon
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Re: Brett's Carbon Star Hunt - April 2021

#5

Post by Gordon »

Well that was fun!!!

First off I was joined by Greg (Astrobee) for the adventure. It's fun to have someone else along for the ride. I'm not a late night person anymore so we had to shut down at 10 pm MST. Unfortunately that excluded capturing V Oph for me.

I found SS-Vir to be a very difficult target. It's much smaller than I expected and had to do quite a bit of double checking my results on Astrometry.net. I confirmed it was exactly centered in the frame so my plate solving worked great!!!

Here's the image.
SS VirStack_16bits_11frames_330s.jpg

My second capture was RR her. This one appeared in the center of the frame and was easier to pick out.

RR HerStack_16bits_10frames_300s.jpg
This was a fun exercise! Plus I was able to confirm just how good platesolving works!!!

Thanks Brett!
Gordon
Scopes: Explore Scientific ED80CF, Skywatcher 254N, Orion ST80, Orion Atlas EQ-g mount, Orion SSAG guider. Baader MPCC MkIII coma corrector, Vixen 70mm refractor. Lunt LS35THa solar scope. Skywatcher EQ5pro mount. Imagers: ZWO ASI1600 MM Cool, ZWO ASI533mc-Pro, ZWO ASI174mm-C (for use with my Quark chromosphere), ZWO ASI120MC Filters: LRGB, Ha 7nm, O-III 7nm, S-II 7nm Eyepieces: a few, Primary software: Cartes du Ciel, EQMOD, SGP, Nebulosity, Photoshop, StarTools V1.4
Blog: http://ghswen.blogspot.com/
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Re: Brett's Carbon Star Hunt - April 2021

#6

Post by KingNothing13 »

That's really awesome Gordon - thanks for sharing.

I've heard of platesolving (obviously), but could not describe WHAT it is. :lol:
-- Brett

Scopes:
Primary: Apertura AD10 with ES 82* 18mm (69x), 11mm (114x), & 6.7mm (187x); Nexus II with 8192/716000 Step Encoders
G-n-G: Orion GoScope II 70mm "Travel Scope" with Orion 25mm Kellner (16x), Orion 10mm Kellner (40x)
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 65; Herschel 400: 26; Caldwell: 6
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Graeme1858
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Re: Brett's Carbon Star Hunt - April 2021

#7

Post by Graeme1858 »

An interesting trio this month Brett.

I was running a Google Meet session whilst hunting for your April Carbon stars which pushed my multitasking skills to the limit!

I found SS Vir but it seemed much less bright than described. Stellarium has it as magnitude 12.2 and that's how it looked on my capturing screen and on my final image. I sent my image to Astrometry.net to confirm the co-ordinates which it did but didn't annotate any of the star designations in my image!

Here it is just above centre of image:

SS Vir_LIGHT_-10.00_60.00s_2021-04-05_22-13-38_0001.jpg

V Oph had not yet risen so I'll have to try that one next month.

RR Her was magnificent in the centre of the screen displaying true carbon colours. Unfortunately, my lack of data collected or poor processing skills have left the image a tad monochrome.

RR Her.jpg

Thanks Brett

Regards

Graeme
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Click Here for the AP Processing Challenge!
______________________________________________
Celestron 9.25 f10 SCT, CGX mount.
ZWO ASI294MC Pro, Canon 600D, Altair GPCAM2 290C.
Celestron 80mm Guidescope, QHY5-II Mono.
Miranda 10x50 Binoculars.
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John Baars
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Re: Brett's Carbon Star Hunt - April 2021

#8

Post by John Baars »

Here is my contribution to the April Red Carbon star hunt.
SS Vir.
I took out my largest telescope, my 150 mm Achromat, because I had more deepsky fish to fry.
Visually quite obvious in a nice starfield. The old Skysensor 2000 doesn't know any carbon stars so I entered its coordinates.
RA 12h 26.3 m and Dec +00° 39'
SS Vir is the only readily visible red star in the field, although HD 108026 seems reddish in Sky Safari to.( In the image the brightest at the five o'clock point.) I didn't notice that visually though.
SS Vir.png
Telescopes in Schiedam in frequency of use : * SW 150mm Achromat F/5, *grab and go: SW 102 Maksutov F/13,
*SW Evostar 120ED F/7.5, *OMC140 Maksutov F/14.3, *Vixen 102ED F/9, on Vixen GPDX.

Most used Eyepieces: *Panoptic 24, *Leica ASPH zoom, *Zeiss barlow, *Pentax XO5.

Binoculars in frequency of use: *AusJena 10X50 Jenoptem, *Swarovski Habicht 7X42, *Celestron Skymaster 15X70,
*Kasai 2.3X40, *Swift Observation 20X80.

Rijswijk Observatory Foundation telescopes: * Astro-Physics Starfire 130 f/8 on NEQ6, * 6 inch Newton on GP, * C8
on NEQ6, * Meade 14 inch SCT on EQ8, *Lunt.

Amateur since 1970.
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Re: Brett's Carbon Star Hunt - April 2021

#9

Post by Gordon »

John,

You create great sketches!!!

Congratulations on the find!
Gordon
Scopes: Explore Scientific ED80CF, Skywatcher 254N, Orion ST80, Orion Atlas EQ-g mount, Orion SSAG guider. Baader MPCC MkIII coma corrector, Vixen 70mm refractor. Lunt LS35THa solar scope. Skywatcher EQ5pro mount. Imagers: ZWO ASI1600 MM Cool, ZWO ASI533mc-Pro, ZWO ASI174mm-C (for use with my Quark chromosphere), ZWO ASI120MC Filters: LRGB, Ha 7nm, O-III 7nm, S-II 7nm Eyepieces: a few, Primary software: Cartes du Ciel, EQMOD, SGP, Nebulosity, Photoshop, StarTools V1.4
Blog: http://ghswen.blogspot.com/
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Re: Brett's Carbon Star Hunt - April 2021

#10

Post by KingNothing13 »

John - that's great - you really captures the red - thanks for sharing it!
-- Brett

Scopes:
Primary: Apertura AD10 with ES 82* 18mm (69x), 11mm (114x), & 6.7mm (187x); Nexus II with 8192/716000 Step Encoders
G-n-G: Orion GoScope II 70mm "Travel Scope" with Orion 25mm Kellner (16x), Orion 10mm Kellner (40x)
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 65; Herschel 400: 26; Caldwell: 6
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