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Today's Convection Cells, Mottling & Proms | Aug 23rd 2019

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#1 MalVeauX

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Posted 23 August 2019 - 12:10 PM

Heya,

 

I've been rather absent due to weather here in Florida, the last time I saw the sky was nearly June... central Florida has been flooding and it's been storm after storm. I'm thankful I didn't miss out on any lovely sunspots. We truly are in the peak of the minimum I imagine with how infrequent a spot has been lately as we move into Cycle 25. Anyhow, I've yet to see the solar disc as void as it is in quite a while, but there's always something to see in HA and with enough resolution you can see great stuff in white light too. Today's the first day I've had without total storm cover and had a few moments between some clouds. Surprisingly my equipment still works, so I grabbed some data. There's a huge feint prom on the limb. I did a lot of visual observing today too.

 

48607226198_ec834618ba_b.jpg

 

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Orion ST120 + Baader UV/IR + Quark + 0.5x FR + ASI290MM
C8 Edge HD + Aires Triband D-ERF + Baader UV/IR + Baader 610nm + Baader ND1.8 + 2x Barlow + IMX174

 

Solarsetup_08232019.jpg

 

Visually, this was fantastic... ST120 + Baader UV/IR Block + Quark + Arcturus Binos on my Twilight II, lovely sharp view of that big feint prom.

 

ST120_TwilightII_QuarkBino_08232019.jpg

 

Very best,


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#2 NorthernlatAK

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Posted 23 August 2019 - 12:29 PM

Beautiful captures, Marty. I am looking forward to seeing your reflector set up and your results from that.

Edited by NorthernlatAK, 23 August 2019 - 12:30 PM.

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#3 mikerepp

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Posted 23 August 2019 - 12:36 PM

Awesome Marty! Great job!


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#4 MalVeauX

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Posted 23 August 2019 - 12:39 PM

I am looking forward to seeing your reflector set up and your results from that.

I have used the 200mm F6 Quartz reflector a few times but no matter what I did with solar, it wouldn't work out well. I used it at night for some planetary and lunar imaging to make sure I wasn't crazy and it did that quite well and produced lovely sharp images using narrowband filters just to make sure it wasn't an issue with that or something. But when I use it for solar, no matter if I used short wavelength, long wavelength, etc, there was a weird bending/pinching/blur to the images that I couldn't correct and not sure the source of, and this is with as perfect collimation as I could get with the filters in place even to ensure something wasn't moving and with a star test the night before and left for the morning. So I'm just not sure what's up with this reflector for this purpose. I currently use it visually at night and its fine for planetary & lunar. I'm not sure why it cannot do solar at the moment. And it may be user error. But I'm not sure. So I'm back to using the C8 Edge for now with the longer wavelengths for both white light & HA.

 

Very best,


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#5 BeltofOrion

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Posted 23 August 2019 - 12:42 PM

Beautiful work!

 

By the way, if that left observatory photo and the bottom outside one were taken today, I'll trade your 'few moments between some clouds' for the mess I've been looking at for the past while. lol.gif


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#6 NorthernlatAK

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Posted 23 August 2019 - 12:49 PM

Have you tried it visually for solar? I'm just curious because I have not seen anyone image or use that kind of setup for visual. If I win the lottery someday maybe I'll get a derf that size if it works well visually.
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#7 MalVeauX

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Posted 23 August 2019 - 01:16 PM

Have you tried it visually for solar? I'm just curious because I have not seen anyone image or use that kind of setup for visual. If I win the lottery someday maybe I'll get a derf that size if it works well visually.

I have not used it visually for solar, but I have used it visually for planets & lunar. I imaged with it for solar, but again, it had weird problems but I'm not sure what they were. Even with good collimation. There was always a blur/pinch to it. Not sure if it was thermal load or what, but I got Quartz mirrors for that very reason. I wouldn't recommend it for visual anyways, since it's so big and wild to mount. A C8 would be a better fit in my opinion for visual/imaging in general if one was going to sink into a huge D-ERF for HA. For white light, any of them can work great with typical solar film.

 

I generally do not recommend greater than 120mm aperture for visual unless you have exceptional seeing often. Visual and imaging are two wildly different things with solar. Visually, with my 200mm F10 and the D-ERF, it's not a pleasing visual experience, you can see stuff, but the seeing is super obvious and its hard to enjoy it visually. I much prefer using my 120mm aperture for visual, the seeing cannot even be noticed in my area at this aperture, but the 200mm shows the poor seeing readily. Huge difference.

 

My ST120 + Quark + Binos is a much better visual experience, for me, than my C8 Edge + D-ERF + Quark + Binos. By far. The larger apertures, in my opinion, are really only acceptable for imaging.

 

Very best,


Edited by MalVeauX, 23 August 2019 - 01:21 PM.

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#8 MAURITS

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Posted 23 August 2019 - 01:18 PM

Great Marty, nice to see you back.


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#9 MalVeauX

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Posted 23 August 2019 - 01:23 PM

Beautiful work!

 

By the way, if that left observatory photo and the bottom outside one were taken today, I'll trade your 'few moments between some clouds' for the mess I've been looking at for the past while. lol.gif

30 minutes to 45 minutes is all it takes usually for me to run through several wavelengths on several scopes, the benefit of an observatory. Early morning I have better odds with less clouds. Now it's all cloudy again of course, can't even do visual.

 

But for the past 2 months, the sky has been like this 24/7:

 

FloridaWeather_02.jpg

 

weather01_08062019.jpg

 

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Very best,



#10 BeltofOrion

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Posted 23 August 2019 - 01:58 PM

Thanks for putting it into context with those three shots, Marty. They look pretty nice, too. smile.gif


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#11 tholan

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Posted 23 August 2019 - 02:45 PM

Very nice Marty. I haven't been out since June either. Indescribably crummy weather here in SD also. Thought I would go out today but clouds moved in and, well, you know the rest. 


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#12 RickV

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Posted 23 August 2019 - 03:41 PM

Welcome back into the Solar Arena Marty - finally!  I missed you.  flowerred.gif

 

LOL!

Best,

Rick


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#13 rigel123

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Posted 23 August 2019 - 09:00 PM

Great ones Marty!  Glad you got a few breaks in the weather!  Awesome weather shots too!


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#14 MalVeauX

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Posted 23 August 2019 - 10:58 PM

Just to show the crazy weather we get...

 

Later this evening, we setup scopes to do a little star party on the big gas giants and then sweep the galaxy core. Instantly some B.S. cloud cover rolled in. Then, waiting it out, it rolled out. We had a nice clear dark sky. 8+ weeks of waiting!

 

StarParty_08232019.jpg

 

StarParty_Sky_08232019.jpg

 

Very best,


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#15 MAURITS

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Posted 24 August 2019 - 08:06 AM

Crazy clouds if you known that the Sun is just above it ...... flowerred.gif


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#16 PhotonJohn

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Posted 24 August 2019 - 08:28 AM

Great stuff Marty, glad to see you're back.


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