User talk:Tfr000

Welcome!

Welcome to Wikipedia, Tfr000! Thank you for your contributions. I am Rosiestep and have been editing Wikipedia for quite some time, so if you have any questions feel free to leave me a message on my talk page. You can also check out Wikipedia:Questions or type {{helpme}} at the bottom of this page. Here are some pages that you might find helpful:

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Rosiestep (talk) 21:23, 2 January 2012 (UTC)[reply]

Your invitation to participate in a Wikimedia-approved survey in online behavior.

Hello, my name is Michael Tsikerdekis [1][2], currently involved as a student in full time academic research at Masaryk University. I am writing to you to kindly invite you to participate in an online survey about interface and online collaboration on Wikipedia. The survey has been reviewed and approved by the Wikimedia Foundation Research Committee.

I am contacting you because you were randomly selected from a list of active editors. The survey should take about 7 to 10 minutes to complete, and it is very straightforward.

Wikipedia is an open project by nature. Let’s create new knowledge for everyone! :-)

To take part in the survey please follow the link: tsikerdekis.wuwcorp.com/pr/survey/?user=56446202 (HTTPS).

Best Regards, --Michael Tsikerdekis (talk) 12:04, 4 January 2012 (UTC)[reply]

PS: The results from the research will become available online for everyone and will be published in an open access journal.

UPDATE: This is the second and final notification for participating in this study. Your help is essential for having concrete results and knowledge that we all can share. I would like to thank you for your time and as always for any questions, comments or ideas do not hesitate to contact me. PS: As a thank you for your efforts and participation in Wikipedia Research you will receive a Research Participation Barnstar after the end of the study. --Michael Tsikerdekis (talk) 19:36, 15 February 2012 (UTC)[reply]

File copyright problem with File:Mercury perturbation comparison.png

Thank you for uploading File:Mercury perturbation comparison.png. However, it currently is missing information on its copyright and licensing status. Wikipedia takes copyright very seriously. It may be deleted soon, unless we can verify that it has an acceptable license status and a verifiable source. Please add this information by editing the image description page. You may refer to the image use policy to learn what files you can or cannot upload on Wikipedia. The page on copyright tags may help you to find the correct tag to use for your file. If the file is already gone, you can still make a request for undeletion and ask for a chance to fix the problem.

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If you have any questions, please feel free to ask them at the media copyright questions page. Thanks again for your cooperation. Stefan2 (talk) 18:04, 6 March 2012 (UTC)[reply]

		Research Participation Barnstar
		For your participation in the survey for Anonymity and conformity on the internet. Michael Tsikerdekis (talk) 13:02, 12 March 2012 (UTC)[reply]

Perturbation

Thank you for all of your work to the perturbation (astronomy) article. I agree that Ecliptic is a mess. -- Kheider (talk) 21:21, 13 March 2012 (UTC)[reply]

Thanks. I'm glad someone is reading it! How do you think it reads? Feel free to offer criticism. Do the diagrams make sense? I'm not quite done with it, but close. I really don't want to make it one of those "equation dumps".Ecliptic is going to be a project. It looks like a conglomeration of everybody's pet ideas for the past 5 years.

Meridian circle

Thanks for your improvements to the "Meridian circle" article. Jc3s5h (talk) 23:13, 7 June 2012 (UTC)[reply]

You're welcome. A few more small improvements, but its basically done at this point. Tfr000 (talk) 14:56, 8 June 2012 (UTC)[reply]

Disambiguation link notification for June 28

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Fixed it. Tfr000 (talk) 20:28, 28 June 2012 (UTC)[reply]

commons:File:Obliquity berger -5000000 to 0.png

Could you clarify the origin of this file, please? If it is borrowed from A. Berger's paper and retouched, then it is not an own work. If you made this from Berger's numerical data, then it is certainly your own work, but could you just upload that data instead of a PNG? I will make an SVG image to replace the ugly PNG. Incnis Mrsi (talk) 13:18, 8 September 2012 (UTC)[reply]

Disambiguation link notification for April 10

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Hello, about your diagram...

Beautiful! Concise, simple, elegant. https://en.wikipedia.org/wiki/User:Tfr000#/media/File:Heliocentric_rectangular_ecliptic.png I think however it has a small mistake; the earth is tilted wrong. As the earth passes the autumnal equinox as shown, the north pole should be tilted to the left. All summer, the earth has leaned toward the sun, now it will spend six months "leaning away from the sun" (for us northerners). I am looking at this diagram on https://en.wikipedia.org/wiki/Ecliptic_coordinate_system#Rectangular_coordinates and the discussion talks about the earth passing the vernal equinox so perhaps just move the earth as-is over to the near side of the orbit. Your diagram tho, your call.

Sorry to use this venue, I don't know how to just send you a private msg Friendly Person (talk) 17:22, 30 August 2015 (UTC)[reply]

The diagram shows the Sun, as seen from Earth, at the vernal equinox, which means Earth's northern hemisphere will be going into summer. Yes, Earth as seen from the Sun is at the autumnal equinox, but that's not how seasons are reckoned. Tfr000 (talk) 15:32, 24 January 2016 (UTC)[reply]

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on Mercury perturbation comparison

Hi, Tfrooo, thanks for your contribution of Perturbation_(astronomy).

I have a question of the figure: https://commons.wikimedia.org/wiki/File:Mercury_perturbation_comparison.png

Do you have any references on it?--Mountain (talk) 17:41, 24 September 2016 (UTC)[reply]

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