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

Astroart6.0 SP2 is available! With scripted auto photometry for variable stars.

Yes, with a simple script you can image the variable stars, using a list of variables and reference/check stars you can produce your BAA or AAVSO reports direct.  Either at the time of imaging or as two separate processes.  It is really great and many thanks to the guy’s at MSB (Astroart software team) http://msb-astroart.com for the work required to produce these new script commands…. So simple to do now:

Load the image
…just to check that AA6 found them all!! You can check which one it did not with another script command.
calcmag = Image.stars.mag(1)
snr = Image.stars.sn(1)
adu = image.stars.adu(1)
Where VarRef.txt contains your text file of variable RA DEC and three reference stars RA DEC and Mag. Then one check star if required. For all your variables that you follow. The software does the rest!

Great for fast time series. could process 100 measurements in about as many seconds.

If anyone would like a custom script written to capture process and measure stars I am happy to help.
I have now tested the BAA bulk transfer software to upload the report. I also have the format in script for the fast time series. Don’t forget that the Julian time is at the CENTRE of the exposure not the start as in the FITS header.I also have the script code for that!!

All bits I had to find out and learn with the help of Andrew Wilson the BAA database manager.

Interesting that a medium sized telescope can find objects orbiting stars 880LY away!

Yes, this is the result of a star measurement session. A time series of V filtered measurements of RW Tri at 880LY.
From this information you can estimate sizes of objects and rotational period.

RW Tri

RW Tri Time Series.

It is 2017 and to start the New Year– Orion Nebular!

I just love this nebular.  Star forming area of dust and gas. This is a better image than before Xmas.
Two sets of exposures to get the core and the dust areas.

Techy bit:  3 x 100sec per RGB and 4 X 130sec L  merged with 3X 60sec per RGB and 4 X 60sec Luminance. Taken with 8inch RC astrograph with a Trius H694 camera running ar -12C. Filter system is StarlightXpress Mount is AzEq6 pro.

Orion Nebular

Orion Nebular


Cacoon Nebula 8 Sept 2016

Ok I have taken quite a good image of this tricky nebula.
Take a look on the web and look at some of the images.
4 X 400sec per RGB.  No darks. (had to manually take out a couple of hot ones)

RGB Image of Cacoon Nebula

RGB Image of Cacoon Nebula

M51- Good seeing and good target

My image of M51 in colour came out really well:

M51 Colour

M51 Colour

Star trails looking for Meteor shower?


This is a 2 hour exposure with the star trails but no meteors??

11th August 2016 10:30 to 12:30

NE Meteor watch

North East at 45deg

Every time I image the Veil I get a space object..


Veil Nebula

Exposure 3X500sec RC Astrograph Trius H694


Last night M51 -Bit windy so not quite round stars.

Not bad image considering the gusty wind.  Just 3 X 300sec per colour


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

M51 Galaxy


M51 Monochrome

Monochrome Veil Nebula.

3 x 650sec SXVR-H18

Veil Nebula.


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


New Version of Observation Manager for AA6 – Now controls PHD2 also!

OK, I now have the controlPHD.exe and the AA6 script to control PHD2 from Observation manager scripts.
Tested and now working on getting the new site up and running.  Woodland Observatory – Selsey .
Build the top of the observatory first 11ft square brick built.

Hope to get operational again in a month!!