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Transit of Mercury in the Spicule Layer. Phil took this great image with his Quantum 6 Scope, Solar Spectrum etalon and PGR Camera.

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

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

Post by MalVeauX » Tue May 14, 2019 9:38 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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Alternatives:

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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
PST CaK Filter + 2nd ERF + 3x Barlow + IMX174 (CaK)
Solarsetup_120mmF8_05142019.jpg
Solarsetup_120mmF8_05142019.jpg (51.34 KiB) Viewed 421 times
Very best,

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

Post by RodAstro » Tue May 14, 2019 11:13 pm

Hi lovely images
The prom was very nice today I spent quite a while viewing it visually.

Rod

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

Post by p_zetner » Wed May 15, 2019 1:55 am

Lovely set, Marty.
Lots of detail in the closeup even though it’s “only” 120mm aperture!
Cheers.
Peter

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

Post by Montana » Wed May 15, 2019 9:16 am

These are gorgeous Marty :bow
Your story did make me smile though, so I am not the only one who does that then :lol: This happened to me on Sunday, forecast was clear blue all day. Started setting up, clear blue. Got everything just right and put my eye to the lens, darkness, where was the sun? looked up and a sky full of clouds. Where on earth did they appear from in 30 seconds? Thankfully after half hour of swearing they went away ;)

Alexandra

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

Post by ffellah » Wed May 15, 2019 2:38 pm

A great set, Marty ! All great but I particularly like #4, very fine detail in it...

Franco

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

Post by marktownley » Wed May 15, 2019 7:34 pm

Top set of images there Marty!
Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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