About Astrojohn

I am a science geek! Interests Astronomy, Skiing, Philosophy, basically any form of technology including writing automation software for my observatory. I will also share this with others using the same EQMOD/Astroart tool set.

Astroart 8.0 is released!

Astroart 8.0 is now available from the MSB-Astroart.com

Many improvements and better accuracy in some functions.

All major cameras, telescopes, filter wheels and focusers are supported by Astroart. Updated plugins are released for free.

Astroart is also an open system with plug-ins and development kit for C++, C#, Pascal, Visual Basic. Fully compatible […]

Starlink is a pain!!

I have missed another night of binary star measurement due to interference from Starlink.

Starlink costs researchers time and money!!

So much space pollution being caused deliberately by Elon Musk. My research could become more difficult as it will for anyone wanting to look beyond the earth. Over 11000 satellites to be launched…your joking, We only have a small percentage so far..

It wrecked my measurement of distant binary systems last night..



M51 very short exposure clear night

This is one of my favourite galaxies. Just did a quick exposure after doing some adjustments on my telescope.

Take a look at all the space junk astronomers have to avoid!

This is a real time interactive display of most of the recorded junk and satellites! http://www.stuffin.space/

Move around it with your mouse!

Binary System HS0705+6700 Plot

Nice plot of the light curve for HS0705+6700, 2.3hr, post-common envelope eclipsing binary system. Spectroscopy and light curve analysis indicated that the secondary companion was a low mass red dwarf star with mass and radius of 0.13M0 and 0.19R0


Paper on objects round eclipsing binary stars.

The paper is now on the archive of scientific papers:


Quite a significant amount of new data from our group. Some interesting departures from early expectations. It will clearly take some ongoing research to identify the mechanisms that are producing some of the effects.

Seems to be getting some interest!


Someone asked “Isn’t there an easier way than building an Observatory”

Yes, I did it once while I was building a new observatory. It took me just 3 hours to build!!

Roll off shed design.

Thick marine ply base with 6 castors to help keep it from flexing, cut out for scope pier. Even put in a dehumidifier. Mine was a bit messy as it […]

New light curve for binary NSVS14256825.

New light curve for NSVS14256825 binary.

Standard plot of mag against time. Check plot to look at a check starGetting a bit low (30deg at end) […]

Want to get started in astronomy on a budget?

How to Get Started With Astronomy While on a Shoestring Budget

Thanks for writing this handy guide.. Now in the LINKS page.