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AR2741 & AR2740, Large Prominence | HA & CaK | May 14th 2019

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#1 MalVeauX

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Posted 14 May 2019 - 04:35 PM

Heya,

 

I had a strange day, where I went to work this morning for a little bit fully expecting bad weather per the report. On the way back home, it was suspiciously clear out. I carried on, ran some errands, etc, and it was still suspiciously clear. I just knew, the moment I even thought about taking a look, the clouds would roll in and it would storm. I'm convinced that the weather lords here in Florida definitely have something against my prying eyes into the sky. I tempted fate and went home. I peaked from the observatory, still no clouds. I got everything going and the seeing was just dreadful for my 8" options, I evaluated them a while until I was convinced there was no option to go 8" today. I was going to image at small scale and call it a day, thankful for a fairly clear sky still. Yet, still no clouds! So, I put my old 120mm F8 achromat on the saddle and let it take a look. Seeing supported this aperture nicely, so I figured, let's roll with it and see what happens. AR2741 was beautiful! And the large hedge prominence on the limb was just exploding with detail and was so wispy and full of strands. I grabbed data at two scales, to compare 80mm to 120mm in the same conditions.

 

B&W:

 

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Colored:

 

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47851324171_7b1a806230_c.jpg

 

Continued....

 

Very best,


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#2 MalVeauX

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Posted 14 May 2019 - 04:36 PM

Alternatives:

 

40884567943_ee4cdf9c38_c.jpg

 

47851325191_f387e6ef15_c.jpg

 

40884574543_35a171ccef_c.jpg

 

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46935051655_408d229fe3_c.jpg

 

47061848464_dd1726d4f9_c.jpg

 

46935053845_32aacdc9db_c.jpg

 

40884570363_b86f557d17_c.jpg

 

Equipment:

 

Celestron Omni XLT 120mm F8.3 Achromat + Baader UV/IR Block Filter
Quark Chromosphere + 0.5x focal reducer + IMX174 (HA larger scale)

 

ST80 + Baader UV/IR Block Filter
Quark Chromosphere + IMX174 (HA smaller scale)

 

ST80 + Baader Blue CCD-IR Block Filter
393nm Filter + 2nd ERF + 3x Barlow + IMX174 (CaK)

 

Solarsetup_120mmF8_05142019.jpg

 

Very best,


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#3 Spikey131

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Posted 14 May 2019 - 08:07 PM

Wow, that prom looks dense!
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#4 hopskipson

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Posted 14 May 2019 - 08:15 PM

Wow that light bridge has developed some granulation. Kind of split the umbra into 3 sections. Nice details!


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#5 PhotonJohn

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Posted 14 May 2019 - 11:47 PM

Special Marty, special.
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#6 tholan

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Posted 15 May 2019 - 05:47 AM

Great, as always Marty. Where did you get the reflective insulation material?


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#7 MalVeauX

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Posted 15 May 2019 - 05:55 AM

bow.gif Thanks all, 

 

Where did you get the reflective insulation material?

It's just reflectix, you can get it at most major "hardware / home improvement" stores. It's even on Amazon. It's inexpensive. I used velcro-tape to make spots to secure it to things.

 

It's just there to act as a radiative barrier, and prevent my mount, plates, counter weights, etc, from turning into sizzling hot plates that plume heat up into my OTA (not that it matters when I'm at near Zenith like this, but when I image early in the morning at low angles it matter).

 

Very best,


Edited by MalVeauX, 15 May 2019 - 06:59 AM.


#8 sushi1128

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Posted 15 May 2019 - 06:58 AM

great details ! Marty


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#9 MAURITS

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Posted 15 May 2019 - 12:00 PM

Excellent images Marty.


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#10 RickV

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Posted 15 May 2019 - 10:22 PM

Excellent Marty... Best, Rick


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