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Sirius B

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#1 Michael11

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Posted 16 October 2012 - 10:56 AM

Hello all,

I've managed to observe Sirius B for the first time. It was clearly visible, probably due to it's increasing 11 second separation. During my previous attempts I usually had to use some imagination, in order to notice anything.

Date: 12 sep 2012. Telescope: Skywatcher 250mm F/5 Newtonian on EQ6, 6mm TMB planetary eyepiece (200X). Seeing ~6/10. NELM 6.5.

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#2 Matt Lindsey

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Posted 16 October 2012 - 12:29 PM

That is just awesome and a fine sketch. It's on my list again for this winter especially with the separation going up. Did you need an occulting bar, or just go straight at it?

#3 Michael11

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Posted 16 October 2012 - 04:00 PM

No bars, that's why I got excited. It was clearly visible with direct vision - just like in the "zoomed" region on my sketch.
By the way when I used a more quality LVW 5mm eyepiece - it produced too many ghosts (secondary images) to see anything. Surprisingly the cheaper TMB 6mm produced almost no ghosts (apart from one big out of focus one)

#4 Michael & Louise

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Posted 16 October 2012 - 04:15 PM

That's quite the feat... like the sketch too. :)

#5 Achernar

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Posted 16 October 2012 - 05:44 PM

Good job on the drawing and finding the white dwarf, even when near maximum separation, seeing, mediocre optics and scatter in the eyepiece can and do hide it from view. In 25 years or so, it will be impossible to see at all in amatuer telescopes unless you have a very large one where the seeing is superb. I believe periastron or closest approach to the white hot primary star will occur around 2044, so you will want to watch this star often until it becomes too close to see again.

Taras

#6 Andrev

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Posted 16 October 2012 - 05:45 PM

Michael 11

Oh wow. That is amazing and add me on the observing list for the next coming days. This is very spectacular. Your sketch is so terrific. Surely its a great challenge to find Sirius B.

Andre.

#7 Andrev

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Posted 16 October 2012 - 08:57 PM

Michael.

I had a bit difficulty to understand why now Sirius B is easier to see. Nor Starry Night and Stellarium show Sirius B but Sky Tools pro 3 does. The coming years will be even better. Someone posted this graph to show Sirius B orbit and 2025 is the best year.

Posted Image

Andre.

#8 phily

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Posted 17 October 2012 - 03:24 AM

Well done, Michael, and a great sketch too. As you say it is very elusive.
Phil

#9 Jef De Wit

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Posted 17 October 2012 - 07:26 AM

I remember seeing Sirius B last year. You did a fine job on sketching the glare and spikes :waytogo:

#10 mdowns

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Posted 17 October 2012 - 03:28 PM

Michael,
As always,another splendid sketch. Over the years I've never seen this companion. I better put this one on the list for the c11 this winter.

#11 niteskystargazer

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Posted 18 October 2012 - 10:33 AM

Michael,

Good sketch of Sirius B :).

CS,KLU,

:thanx:,

Tom

#12 Rutilus

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Posted 18 October 2012 - 04:17 PM

Great sketch and observation of the Pup.
In the last two years, I've managed to see it with
my 4 inch APO refractor.

#13 Undermidnight

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Posted 19 October 2012 - 08:58 AM

Very nice!! I love the color.

This sketch is another example why I enjoy view everyone's sketches. It reminds me of being at the eyepiece under the heavens.

Jason

#14 Michael11

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Posted 20 October 2012 - 06:25 AM

Thanks again :)

#15 Chopin

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Posted 23 October 2012 - 09:54 PM

Superb in every way! I agree that the color representation is excellent. I mostly enjoy the realism produced by the spider vanes. Wonderful.

#16 frank5817

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Posted 24 October 2012 - 09:45 AM

Michael,

Always a treat to see the pup. Fine sketching.

Frank :)

#17 malatincia

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Posted 28 October 2012 - 02:11 PM

Post deleted by malatincia

#18 Dennis_S253

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Posted 28 October 2012 - 07:18 PM

Nice catch

#19 azure1961p

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Posted 28 October 2012 - 07:24 PM

Thats an exquisite rendering. Beautifuly and faithfully executed.

Pete

#20 Michael11

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Posted 29 October 2012 - 12:23 PM

This is weird, your sketch clearly shows nearby stars in the east-west configuration, based on that the pup should be in the east, so what you sketched is the opposite of where the pup is. Why hasn't anyone mentioned that yet?

Also true north is off, just look up sky-map.org. i have tried to view the pup, and have only seen a glimpse of what might be sirius b, i marked the dot on the attachment, but it does not seem to be in the right spot, so not sure.


I think you are mistaken. According to a chart from Andrev (for example) - Sirius B is east and slightly north from Sirius A. This is exactly how my drawing shows it.

I'm attaching a screenshot from Guide 9 software, of the same field of view. It's easy to compare with sketch.
Everything is in place, except maybe for a tiny difference in alignment with north.
This is a photo I found of this region - also quite easy to identifiy.
http://scienceblogs..../2010/01/sir...

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#21 Andrev

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Posted 01 February 2014 - 12:46 PM

Hi Michael.

Since your first post I'm trying to see Sirius B without success. I tried two times this week with good seeing and last night I was about sure I saw it except the orientation was 2 o'clock instead of 4 o'clock like on this screen capture from Skytools pro showing the same orientation as in my scope at 250X.

Please note that it is missing a 10th mag star between Sirius and the star at 8 o'clock that Skytools doesn't show.

http://www.astro-que...=3712&mode=view

Andre.






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