Earth-Sun Scaling tutorial & Images” written by “krakatoa1883

these are all of the great references that our users have shared with others.

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April 14 Evolution ...

Post by MAURITS »

A serious evolution between today and yesterday, with a beautiful "arch" forming on this prominence.

ASI 174MM camera with interference eliminator.
Quark Chromosphere
TOA 150-B with Baader DERF.
09_45_47  Gray Black.jpg
09_45_47 Gray Black.jpg (208.03 KiB) Viewed 635 times
09_45_47 Gray Earth.jpg
09_45_47 Gray Earth.jpg (695.15 KiB) Viewed 635 times


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Re: April 14 Evolution ...

Post by krakatoa1883 »

Very good images with much details in the spicule carpet, my Quark Chromo is not so good. Is the interference eliminator needed with the 174 ?


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Re: April 14 Evolution ...

Post by banjo »

Sans titre 1.gif
Sans titre 1.gif (10.9 KiB) Viewed 615 times

superbe, bravooooooo !!!!
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sorry for my English translators google :mrgreen:
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Re: April 14 Evolution ...

Post by MAURITS »

krakatoa1883 wrote: Wed Apr 14, 2021 3:00 pm Very good images with much details in the spicule carpet, my Quark Chromo is not so good. Is the interference eliminator needed with the 174 ?
Raf, without de eliminator I have NR's with the 174MM.


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Re: April 14 Evolution ...

Post by ffellah »

Excellent images Maurits. The prom came out really well.

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Re: April 14 Evolution ...

Post by arnedanielsen »

Excellent closeup images, Maurits!

Best regards,
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Re: April 14 Evolution ...

Post by Martin_S »

Great Prom detail Maurits, thanks for sharing your images.

Martin


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Lunt LS60THa Tilt-Tuned Solar Telescope, LS50FHa solar filter front-mounted Double stack etalon. 2 x Barlow
Remote etalon and focusing control's ASI290mm ASI 174 mm Camera's

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Re: April 14 Evolution ...

Post by Stardust5858 »

Lovely images Maurits. Thanks for sharing


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Re: April 14 Evolution ...

Post by Montana »

Wow!! this is a gorgeous shot :bow :hamster:

That is one thing I should learn, how to get an Earth on a picture. The biggest downfall for me is that I have never found a decent Earth picture to use and how you get it so small without it being one big pixel?

Alexandra


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Re: April 14 Evolution ...

Post by Boso36 »

Hi Alexandra,
I think this Earth may be reasonably easy to use. I already isolated the Earth, its 673 pixels. I could explain it to you, but I have plans to make a Solar SSM ! I could publish it another time on the tutorials section.
There is some information on Brierley Hill solar blog, although I found the sound very hard to hear and understand.
https://brierleyhillsolar.blogspot.com/ ... rials.html

I had to learn Photoshop, layers and everything. Still not learned it al! after more than 2 years ! You can also use GIMP or Affinity Photo, which are less expensive alternatives and quite adequate.
I only found it after an extensive search online.

Magnus
Earth-673pixels-scale.tif
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Re: April 14 Evolution ...

Post by Montana »

Thanks Magnus
Alexandra


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Re: April 14 Evolution ...

Post by Boso36 »

Maybe this is easier to see/use.
Earth-673pixels-scale.gif
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Re: April 14 Evolution ...

Post by Montana »

But it doesn't have the UK on it :lol:

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Re: April 14 Evolution ...

Post by MAURITS »

Montana wrote: Thu Apr 15, 2021 7:02 am But it doesn't have the UK on it :lol:

Alexandra
Alexandra, I have the "TIF image" that I use in my images as above.
You can use them, can I set it up here as a TIF file?


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Re: April 14 Evolution ...

Post by Montana »

Thanks a million :) TIFs aren't displayed in the forum but you can right click and open them :)

Alexandra


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Re: April 14 Evolution ...

Post by MAURITS »

Earth.tif
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Re: April 14 Evolution ...

Post by Montana »

Much better, the centre of the universe :lol:

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Re: April 14 Evolution ...

Post by Montana »

We are just short of the Australian side in the collection now :)

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Re: April 14 Evolution ...

Post by Boso36 »

Alexandra,
Maybe this is better for you. It has the UK near the centre...
earth-uk-isolate2.tif
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Re: April 14 Evolution ...

Post by Boso36 »

Hi all,
I think I have found an easier way to calculate the size of the earth (in pixels) - this will be an option in your imaging program - to resize the earth image. Assuming the diameter of the earth is 109 times smaller than the sun, and the sun is about 30 minutes of arc = 1800 arc seconds.
Then just calculate your image scale using the calculator in:

astronomy.tools

(make adjustments for your optical train) - once you have this reasonably accurately: then (image scale is in arcseconds/pixel).

size of earth (pixels)= 16.514/(image scale)
This will save you the hassle of having to draw a large circle in photoshop, measure the diameter of the sun in millimetres and dividing it by 109 to get the diameter of the earth.

I am sure this has been done before, but not able to find a reference to it.
If I am wrong, then please correct my error(s).

Hope this helps.

Magnus


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Re: April 14 Evolution ...

Post by EGRAY_OBSERVATORY »

Two excellent images Maurits of the prom showing fine detail

Thanks for sharing
Regards
Terry


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Re: April 14 Evolution ...

Post by Merlin66 »

Here's an Aussie version.....
small earth_132pix.jpg
small earth_132pix.jpg (31.02 KiB) Viewed 383 times


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Earth-Sun Scaling tutorial & Images” written by “krakatoa1883

Post by Merlin66 »

Placed in Library for reference.


"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy  
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
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