Are you "ioannis", who had the spectra page on http://ioannis.virtualcomposer2000.com before it closed?

These can still be accessed through the Internet Archive (Wayback Machine). The later snapshots of the site contain a redirect to some rubbish pages (possibly caused by the virus UVIR mentions).

Are you "ioannis", who had the spectra page on http://ioannis.virtualcomposer2000.com before it closed?

Yes. That's me.

best,
UVIR

I remember these pages from the mid 2000s. These were good, excellent work. But that prism setup gives non-linear spectra (red-end compressed & blue spread out, scroll down spectra page to see scale). Just a minor inconvenience as it is very nice to have many lamp spectra in one place.

I believe I have an archive somewhere of a few of these webpages circa 2005(?).

yes, prisms offer non-linear spectra, while gratings offer linear ones. I had some grating spectra on other pages, but I haven't reconstructed them yet. They will be, as soon as I find some time off.

Since then many people built amateur spectrographs using CD gratings of surprisingly good quality, so they have become a bit more popular.

best,
UVIR

Hi Giannakis,

It's nice to see you here and I am glad that you are gradually restoring your technical pages, you have accumulated so much great spectral information that it was really a shame when the virus came and hit your server... Welcome here on LG and I hope you will share plenty of interesting info with us.

Max

Hi Max,

thanks for the welcome.

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best,
UVIR

Quote from: dor123 on November 17, 2015, 05:04:04 AM

Are you "ioannis", who had the spectra page on http://ioannis.virtualcomposer2000.com before it closed?

These can still be accessed through the Internet Archive (Wayback Machine). The later snapshots of the site contain a redirect to some rubbish pages (possibly caused by the virus UVIR mentions).

merc and others, yes, please be careful with the archived pages. They are infected by the virus and if you have javascript enabled in your browser, it can transfer to your machine.

If you want to browse my pages from the archive safely, disable javascript in whatever browser you use and then visit the archive, by searching for the latest instance (2012) of the root domain FIRST (http://ioannis.virtualcomposer2000.com/index). Then you can navigate automatically to the other sections, via its internal links.

best,
UVIR

As I am rebuilding my web pages, I am stuffing some updates here, to avoid cluttering the board.

Generally speaking some teckie stuff, some people may find interesting.

Latest update:

Self-Absorption/Spontaneous Reversal of Spectral Lines

best,
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UVIR ->

Your website took down from the internet.

Your website took down from the internet.

yes, I know. The new server has problems. if you need it, please use the archive.

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Ioannis@