Montage of Moon approaching Sun in front of corona

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Montage of Moon approaching Sun in front of corona

Post by george9 »

This is taken from Comb Ridge in SE Utah in my 50mm homemade coronagraph at 5303 Angstroms during the annular eclipse. Universal times label the images, and they all have south up. The dark black disk in the center is the shadow of the coronagraph’s obscuring cone. The Moon is a more subtle grey disk due to scattered light in the atmosphere. At 14:59UT, the Moon is seen just coming in from the left (west). At 15:08, it is more prominent just before first contact. At 15:57, it is between first and second contact. At 16:15, the far edge of the Moon can be seen against the corona. At 16:26, minutes before second contact, the west corona can been seen well peaking from behind the Moon, and the coronal streamers can be seen all around.

George

Hripcsak 2023-10-14 eclipse corona montage 3.jpg
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Re: Montage of Moon approaching Sun in front of corona

Post by george9 »

Maybe this one is more clear.

George
Hripcsak 2023-10-14 eclipse corona montage 3.jpg
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Re: Montage of Moon approaching Sun in front of corona

Post by rigel123 »

Really cool George!


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Re: Montage of Moon approaching Sun in front of corona

Post by Montana »

Amazing George :bow :bow :bow

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Re: Montage of Moon approaching Sun in front of corona

Post by SJohnson »

Awesome shots George and congrats on the SPOD!


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Re: Montage of Moon approaching Sun in front of corona

Post by george9 »

Thanks, and thank you for the SPOD.

FYI, here is a closeup of the 15:08.

George

Hripcsak 2023-10-14-1508_0-CapObj_____100r_48T_30reg half.jpg
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Re: Montage of Moon approaching Sun in front of corona

Post by DeepSolar64 »

Absolutely amazing work George. Very SPOD worthy! Congratulations 🥳.

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Re: Montage of Moon approaching Sun in front of corona

Post by pedro »

Amazing images, congrats on APOD George


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Re: Montage of Moon approaching Sun in front of corona

Post by Carbon60 »

Superb images. Very nicely done, George.
Congratulations on SPoD.

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Re: Montage of Moon approaching Sun in front of corona

Post by KMH »

That's a really amazing collection - quite an achievement!

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Re: Montage of Moon approaching Sun in front of corona

Post by marktownley »

Incredible! Post a picture of the setup if you can George!


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Re: Montage of Moon approaching Sun in front of corona

Post by george9 »

Here the coronagraph is set up at Comb Ridge in southeast Utah, USA. Other than the battery, that all came with me from New York.

George
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Re: Montage of Moon approaching Sun in front of corona

Post by DeepSolar64 »

That looks like a Losmandy AZ8 mount like I use but with a different mount head. The setup is quite large for a 50mm aperture.


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Re: Montage of Moon approaching Sun in front of corona

Post by oriolestation »

Exceptional results, George. Especially working in the field as you were. Bravo!!


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Re: Montage of Moon approaching Sun in front of corona

Post by george9 »

Thanks again.

The mount is a new ZWO AM5 harmonic drive unit that I like a lot, on a TC40 pier with PE160 pier extension.

The 50mm is f/20 for 1000mm, the white dew shield helps avoid dust (maybe 300mm), and then the chronograph is a series of lenses that adds another 400mm. So about 1700mm total. The tube is about 90mm, which helps disperse the light, but I am not really exploiting it well because I have only 43mm around the cone.

George


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Re: Montage of Moon approaching Sun in front of corona

Post by DeepSolar64 »

I thought that might have been an AM5 mounted on the Losmandy tripod.


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Re: Montage of Moon approaching Sun in front of corona

Post by Valery »

DeepSolar64 wrote: Fri Oct 20, 2023 2:04 am I thought that might have been an AM5 mounted on the Losmandy tripod.
Ditto!


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Re: Montage of Moon approaching Sun in front of corona

Post by Valery »

George, for me your series of images is a SPOY! Yes, SPOY!

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Re: Montage of Moon approaching Sun in front of corona

Post by thesmiths »

Yes, probably solar images of the year.


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Re: Montage of Moon approaching Sun in front of corona

Post by DeepSolar64 »

Amateurs that can view/image the solar corona are very rare. Cutting edge!!


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Re: Montage of Moon approaching Sun in front of corona

Post by george9 »

I processed my last image before second contact. I was busy looking at the Sun during annularity, and then some light cirrus moved in. Not enough to notice in white light but bad for coronal viewing.

With the Sun 90% covered, most of the scattered light should be gone, so this should be a great image. (In fact, I have seen some simple white light camera images by others that show the innermost corona where the Moon just touched the edge of the Sun.) I think it may be better than my previous images but not by that much.

I could not do a negative image for this one because it takes 10 minutes for the oven to cool. I had to subtract a linear gradient for some reason. I could probably do better. The finger-shaped dark region at 7 o'clock is a dust artifact on the camera window that I missed. This version is flipped so north is up.

The SDO satellite image is shown below it. Good match.

The fact that my other images almost match this shows that the subtraction of a negative really helps.

George
Hripcsak 2023-10-14-1626_8-CapObj_____100r_48T_30reg corona sharp up.jpg
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SDO 20231014_162935_4096_0211 ring.jpg
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Re: Montage of Moon approaching Sun in front of corona

Post by DeepSolar64 »

This still looks really good, George.


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Re: Montage of Moon approaching Sun in front of corona

Post by astroshot »

That's amazing work George!
Really impressive!
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Re: Montage of Moon approaching Sun in front of corona

Post by Montana »

This is still absolutely beautiful and superb :bow :bow :bow

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Re: Montage of Moon approaching Sun in front of corona

Post by DeepSolar64 »

Montana wrote: Mon Oct 23, 2023 9:17 am This is still absolutely beautiful and superb :bow :bow :bow

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Agreed. And ground breaking in amateur solar astronomy.


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