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.



Observation Manager Click to join AA5ObsMgr

Click to join AA5ObsMgr

Interesting Phase plot of my data to date for NSVS 01286630

Needs some more work to validate the -0.4 to -0.1 phase. Are these effects star spots? To date 26-9-2018

NSVS 01286630 Phase plot.

Great new resource to introduce you to astronomy

Jenny Hobby Help!

Jenny has dedicated considerable time and effort to create an introduction to astronomy and how to get started. Great for schools. I know there are a lot of my followers that download the KS2 introduction to the universe simulations and Celestia scripts and classroom teaching aids (currently about 376 downloads).

Take a […]

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Astroart 6.0 Manager – Automate your observatory V9.12e – freeware.

I have just released the minimal system to automate your observatory.

Just unzip to the desktop and run the link to the planner and manager. (OM912e)

Astroart6.0 Manager V9.12e There is also a system checker that will validate all your files.

You should create a TEMP folder on your desktop to store your images and […]

Latest measurement of V0470 CAM close binary pair.

You can see the initial readings are at the secondary minima. This measurement of the primary minima (in BJD) will go into the data set to estimate the changes in the binary pair period. Strange bright spot at minima??

My First Test spectra using SA200

SA200 spectra of an A0 star Phad. Marked line is Hydrogen beta.

Exposure is 1.5 seconds Using the RC astrograph and Trius H694 with SA200 in the filter wheel.


Just about to start a new project and my camera has a problem!

Cosmic ray strike on my camera chip!!:

Ok just had a message from Starlight Xpress about this: It is an increase in dark current caused by a high energy particle striking the chip and causing a small flaw in the crystal structure. Clearly not a lot you can do about this. (maybe wrap the camera […]

Variable Star V0470 Cam – Interesting Light Curve

Light Curve

This data taken 12 November 2017 -(Data points on BAA Site)

But interesting shape of curve. You can see the secondary eclipse of the dimmer and smaller star.


First images from the new observatory- Full Moon -some thin cloud.

M51 Galaxy

M51 Monochrome

Monochrome Veil Nebula.

Veil Nebula.


Next step is to get focus automated. Just need script..