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Sasa
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Reged: 11/03/10

Loc: Ricany, Czech Republic
Jupiter 9.11.2012 - first time seeing oval BA new
      #5513377 - 11/10/12 03:58 PM

Hello,

finally I saw yesterday for the first time the large oval BA preceeding GRS:



The conditions were far from being perfect, but it was clearly there! Not many other details were seen, some festoons, parts of equatorial belt, and the GRS was bordered on its preceeding side with white rim.


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Special Ed
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Reged: 05/18/03

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Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Sasa]
      #5513606 - 11/10/12 07:50 PM

Hi Sasa,

A very fine sketched observation of the King of Planets. Lately, Oval BA is prominent and relatively easy to see given halfway decent conditions. Keep up the good work.


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Asbytec
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Reged: 08/08/07

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Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Special Ed]
      #5513798 - 11/10/12 10:58 PM

Sasa, yes, it is clearly there. Well done. It was a first for me, too.

I dunno, I like the contrast you pulled out of Jupiter given the conditions, especially the two toned NEB. That's not easy.


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Sasa
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Reged: 11/03/10

Loc: Ricany, Czech Republic
Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Asbytec]
      #5513956 - 11/11/12 03:18 AM

Quote:


I dunno, I like the contrast you pulled out of Jupiter given the conditions, especially the two toned NEB. That's not easy.




It was not easy but it was there (the equatorial side was visibly darker). Few days earlier, in better conditions, I could even see in the same telescope some white long spots in NEB:



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Asbytec
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Reged: 08/08/07

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Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Sasa]
      #5513986 - 11/11/12 04:32 AM

Quote:

It was not easy but it was there (the equatorial side was visibly darker). Few days earlier, in better conditions, I could even see in the same telescope some white long spots in NEB.




Yep! You got it! Again, great observation, Sasa! I think that bright spot in the left sketch has been dubbed "the beacon" by some imagers. I think that's it. Did you post your previous sketches?


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Sasa
professor emeritus


Reged: 11/03/10

Loc: Ricany, Czech Republic
Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Asbytec]
      #5514593 - 11/11/12 02:46 PM

Quote:

Did you post your previous sketches?




Not many, you can find all my sketches on my web page. Jupiter, in particular, can be found here.


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Dean Norris
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Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Sasa]
      #5514661 - 11/11/12 03:37 PM

Sasa,

Excellent sketches of Jupiter. Congratulations on observing Oval BA. Your sketch on the 6th of Nov. depicts the region of Jupiter I observed last night. Lots of detail in the NEB and EQZ in your sketches.

Thanks for posting. Dean


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E_Look
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Reged: 03/06/08

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Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Dean Norris]
      #5515011 - 11/11/12 08:08 PM

Really! Oval BA, to me, is elusive to view, and here he is, with a great sketch of it.

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Asbytec
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Reged: 08/08/07

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Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Sasa]
      #5515042 - 11/11/12 08:30 PM

Quote:

Not many, you can find all my sketches on my web page. Jupiter, in particular, can be found here.




You have been busier than I have been. Excellent work.


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george golitzin
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Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Asbytec]
      #5519591 - 11/14/12 02:14 PM

Very nice sketches, Sasa, and congratulations on Red Junior! It seems to be getting a bit easier to pick out, or maybe I've just had pretty decent seeing lately.
I saw it clearly in the 18-inch two nights ago (ok, maybe that much aperture is cheating, but wow, there were some very interesting details in both the main belts, and the equatorial band was very wide within the EZ, but I digress...), and again last night I caught it in the 10-inch, just rotating into view on the eastern limb.

Thanks again for posting your fine sketches.

-george


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Sasa
professor emeritus


Reged: 11/03/10

Loc: Ricany, Czech Republic
Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: george golitzin]
      #5519609 - 11/14/12 02:32 PM

Thanks George, I saw your sketch in the other thread. It is very nice and full of details. Definitely bigger aperture counts here. I still have two bigger scopes than 100mm ED: AS110 and ED130. Haven't seen Jupiter through them this season yet. Sill not in the same league as 18" mirror, but I'm definitely curious how much more details (if any) I will be able to glimpse.

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Asbytec
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Reged: 08/08/07

Loc: La Union, PI
Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: george golitzin]
      #5520242 - 11/14/12 10:15 PM

Quote:

...Red Junior! It seems to be getting a bit easier to pick out, or maybe I've just had pretty decent seeing lately.

-george




Good question, George. BA has always avoided detection - for me. But, it is easy these days. It must be getting darker, or it would have been this easy last year when (only?) I failed to see it. Would like to look back over my sketches to see if I inadvertently captured it. Asking Dean about BA last fly by, he might have mentioned it was difficult. Apparently, not anymore.

Sasa, get that ED 130 out there! Or let me borrow it.


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Sasa
professor emeritus


Reged: 11/03/10

Loc: Ricany, Czech Republic
Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Asbytec]
      #5528308 - 11/19/12 04:11 PM

Today, I had a literally 20minut window to observe Jupiter. It was clear that we would be soon covered by inversion clouds, so I took out just small refractor that I know temperates quickly, AS80/1200 (sorry, no ED130 yet). It was worth at the end, as the GRS was just on meridian. I could spot quite some details (including the junior spot, it is still visible even in 80mm, although it is more just some wave on the belt then individual spot):



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Asbytec
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Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Sasa]
      #5528721 - 11/19/12 08:17 PM

Second time spotting it? It is so much easier this time around. Not sure why.

Yes, most times it appears, to me, as a bump much like you've presented. At the best moments it seems to tighten up and near the meridian that smaller dark oval can be held (as a distinct, tiny spot or as a slightly darker patch) for as long as the seeing holds.

Well done, thanks for sharing, Sasa.


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Rich (RLTYS)Moderator
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Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Asbytec]
      #5529530 - 11/20/12 07:48 AM

Usually once you see a difficult feature the first time it becomes easier to spot as you now know what to look for.

Rich (RLTYS)


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Dean Norris
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Re: Jupiter 9.11.2012 - first time seeing oval BA [Re: Rich (RLTYS)]
      #5530585 - 11/20/12 04:33 PM

Sasha,

Great sketch of Oval BA and GRS. It's fun to see this feature pass by the GRS as it zips around Jupiter.

Dean


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Rutilus
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Reged: 12/17/10

Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Dean Norris]
      #5547779 - 11/30/12 07:49 PM

I too picked-up Oval BA for the first time this evening.
It was quite easy to see in my 100mm f/13 and 100mm f/12 Achromat refractors.
Also preceding BA, but in the SEB was a very bright white spot. Also some bright bays in the southern edge of the NEB,
and a couple of large festoons.

A thin equatorial belt also visible. Jupiter is a real joy to observe at the moment, so much going on.


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Sasa
professor emeritus


Reged: 11/03/10

Loc: Ricany, Czech Republic
Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Rutilus]
      #5549122 - 12/01/12 05:25 PM

Congratulation Rutilus, yes Jupiter is fun. I just came from another session. Unfortunately again short (about 20 minutes), the clouds were moving in again. I took only 80mm refractor out (I promise, I will take out something bigger at some point), still I was rewarded by nice view on GRS, junior spot and few other details in SEB and equatorial region:



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Asbytec
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Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Sasa]
      #5549379 - 12/01/12 08:44 PM

Sasa, that's an amazing sketch. That you captured that amount of detail in an 80 Refractor speaks to both the scope and your skill as an observer. I applaud you.

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Sasa
professor emeritus


Reged: 11/03/10

Loc: Ricany, Czech Republic
Re: Jupiter 9.11.2012 - first time seeing oval BA new [Re: Asbytec]
      #5550715 - 12/02/12 05:25 PM

Thanks Norme for your compliments, you made me blush. I guess it is just Jupiter which makes the show. The details, bands, red junior, etc. are showing nowadays quite some contrast. There were only 2 difficult features that I spotted that night, the most eastern and most western festoons were just ghost. Other features, including the middle festoon, were more or less easy to see. One just had to wait a little bit for calm moments.

Concerning the optics, AS80/1200 is indeed a nice scope. Especially for short sessions like this. I also own 80mm triplet (Lomo 80/480mm), which I bought for astro imaging. I found the AS80 is providing sharper images: here.


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