Solar Images Data: Where to Find?

[Phylosopher]

Hello everyone,I am trying to acquire the data used to make solar images like in this link. For various wavelengths, but mainly for visible. And, honestly I am having a problem finding the data.

I am assuming that these images are made using a set of data for each, am I wrong?

I don't have a background in astronomy, so I am kind of lost here. Where do astronomers usually take their data to make these images? Is there a central archive page or something? A lot of the telescope sites I visited are outdated or provide images without the data.

 

[Drakkith]

I am assuming that these images are made using a set of data for each, am I wrong?

They are composed either of colorized/non-colorized monochrome images or of a composite of separate images taken through different filters and then digitally added together.

Where do astronomers usually take their data to make these images?

I'm not sure how much data is simply out there and available to the public. I know some portion of the Hubble Space Telescope's data is available, but as for other observatories I'm not certain. Most of the raw images taken may simply be stored and archived in various computer systems throughout the world and not available for public access.

 

[Phylosopher]

They are composed either of colorized/non-colorized monochrome images or of a composite of separate images taken through different filters and then digitally added together.
I'm not sure how much data is simply out there and available to the public. I know some portion of the Hubble Space Telescope's data is available, but as for other observatories I'm not certain. Most of the raw images taken may simply be stored and archived in various computer systems throughout the world and not available for public access.

Thank you for your reply.

Maybe being specific could help. I am interested in modelling the limb darkening effect, and I want to compare it to a real data set. Is it possible to use these images? Honestly it sounds just bad ^^".

Most of the papers I have access to and read on this subject do not provide a table/tables for these values.

 

[Drakkith]

Maybe being specific could help. I am interested in modelling the limb darkening effect, and I want to compare it to a real data set. Is it possible to use these images?

If you mean the images in the link you provided in your first post, then I doubt it. I'm not certain, but I'd bet that these images have already been processed to remove artifacts, smooth the image, adjust the contrast, and more things to make them more visually appealing. This generally destroys the raw information you need to do an accurate analysis. What you want is the raw images and any calibration images used.

 

[Phylosopher]

Ok, it seems I was looking in the wrong direction in google. For future reference, and for those interested

https://umbra.nascom.nasa.gov/newsite/data.html

This specific archive is very vast
https://sdac.virtualsolar.org/cgi/search

 

[davenn]

I am trying to acquire the data used to make solar images like in this link. For various wavelengths, but mainly for visible. And, honestly I am having a problem finding the data.

I am assuming that these images are made using a set of data for each, am I wrong?

they are actual images from optical instruments (except the 2 magnetograms) the top 3 images 2 x magnetograms
and 1 x Ha ( hydrogen alpha). I do Ha imaging myself from home with a specialist telescope ... I have a pinned solar thread
in the astronomy section with imaging I have done.
The magnetograms and Ha are done from ground based equipment observations
The lower 3 images are done from spacecraft , now days primarily the SDO ( Solar Dynamics Observatory) satellite.
They are actual images from optical instruments and then colourised.Dave

EDITED --- fixed typos

 

[davenn]

https://umbra.nascom.nasa.gov/newsite/data.html

I have been using this site for many, many years, way back to the SOHO satellite days in the mid 1990's

The site has currently crashed ( since 31 Dec 2018) I have emailed them to see if they are get it running again