Magnetometer Project

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solarscope180
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Re: Magnetometer Project

Post by solarscope180 » Mon Feb 02, 2015 6:14 pm

How far do you need the magnetometer to be from buried electrical lines to achieve acceptable results?

Ralph

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swisswalter
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Re: Magnetometer Project

Post by swisswalter » Mon Feb 02, 2015 8:06 pm

Hi Stuart

as soon as I have reached the status "retired" I'm after it ;)
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)

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grimble_cornet
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Re: Magnetometer Project

Post by grimble_cornet » Wed Feb 04, 2015 9:53 pm

After a mere 8 days.............. the trace seems to have stabilised at about 4000Hz having started at about 3400Hz when the temperature was fully controlled:
8 days.jpg


Yesterday's trace was pretty good with no obvious sign of 'upwards creep'
Feb 3rd 2015.jpg
Feb 3rd 2015.jpg (234.53 KiB) Viewed 1890 times
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Carbon60
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Re: Magnetometer Project

Post by Carbon60 » Wed Feb 04, 2015 9:57 pm

Looking very good there, Mike.

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
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Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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Carbon60
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Re: Magnetometer Project

Post by Carbon60 » Wed Feb 04, 2015 10:04 pm

solarscope180 wrote:How far do you need the magnetometer to be from buried electrical lines to achieve acceptable results?

Ralph
Hi Ralph,

It will depend on the current flowing through them as this will drive the local magnetic field. My magnetometer is about 5m from my house and it doesn't appear to be affected by normal domestic power systems. I wouldn't like to second guess your situation. I would just suggest that the further away the better.

Regards

Stuart
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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grimble_cornet
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Re: Magnetometer Project

Post by grimble_cornet » Wed Feb 04, 2015 10:09 pm

Mine is buried about 7m from the house but only about 2m from the power distribution box for my observatory. I have spent a couple of 3-4 hour sessions in the observatory drawing power for mount, computer and a 400W heater with no obvious deviation on the magnetometer trace.
However, as far away as possible makes sense!
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swisswalter
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Re: Magnetometer Project

Post by swisswalter » Thu Feb 05, 2015 5:33 am

Hi Mike

that really looks very good, congratulations
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)

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Re: Magnetometer Project

Post by marktownley » Thu Feb 05, 2015 7:11 am

Really looking the business now Mike!
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http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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Re: Magnetometer Project

Post by grimble_cornet » Thu Feb 05, 2015 12:26 pm

Thanks guys.
I'm glad I gave it time to settle down but still baffled why it took 8 days!
Fairly happy with the results at the moment as it seems to capture all the 'significant' events - just waiting for a BIG one now.......
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Mike Garbett

Selection of Solar and Deep Sky images on Flickr: https://www.flickr.com/photos/mikegarbett/

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Re: Magnetometer Project

Post by grimble_cornet » Thu Feb 19, 2015 12:54 am

Latest update..................
Things seem to have stabilised nicely over the last few weeks and I am now getting data which compares rather well with published results.

The last couple of days have been quite active with swings of 60 to -60 nT
17-18th February 2015.jpg
One interesting point - look at 10am on the 17th and you will see a (relatively) big dip in temperature caused by me leaving the patio doors open for about 20 minutes while I was setting up my imaging gear on the patio. Shows just how easy it is to de-stabilise the system (even in a thermostatically controlled box) and, even though it didn't seem to distort the magnetic data too much, a small drop in the output can be easily mapped to the 0.4 degree drop in temperature :roll:
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Selection of Solar and Deep Sky images on Flickr: https://www.flickr.com/photos/mikegarbett/

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Montana
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Re: Magnetometer Project

Post by Montana » Thu Feb 19, 2015 9:26 pm

:bow :bow :bow that's coming along nicely :) I take it that the top one is yours?

Alexandra

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Re: Magnetometer Project

Post by grimble_cornet » Thu Feb 19, 2015 11:24 pm

That is correct Alexandra.
I must say that I'm very surprised how my £200 'lash-up' performs so well in comparison with professional stations which I assume have somewhat larger budgets :lol: :o :lol:
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Selection of Solar and Deep Sky images on Flickr: https://www.flickr.com/photos/mikegarbett/

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Re: Magnetometer Project

Post by Wah » Fri Feb 20, 2015 3:08 am

:bow :bow :bow

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swisswalter
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Re: Magnetometer Project

Post by swisswalter » Fri Feb 20, 2015 5:00 am

Hi Mike

a perfect match, incredibly sensitiv to small temperature changes
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE :)

from 7 am - 7 pm http://www.nanosys.ch

from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa ;)

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Re: Magnetometer Project

Post by marktownley » Fri Feb 20, 2015 12:41 pm

Excellent results! Very thermally dependable...
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http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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Re: Magnetometer Project

Post by Carbon60 » Fri Feb 20, 2015 7:11 pm

Nice one, Mike.

I had some issues this week with a water leak in the garage :o and had to use a heater to help dry things out. Needless to say, the temperature change sent my data haywire for a period. Back to normal now....thankfully.

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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marktownley
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Re: Magnetometer Project

Post by marktownley » Fri Feb 20, 2015 7:58 pm

The next step forward for this project is advanced elements of thermal stabilty...

Sounds like it should have been a textbook I read for my A-levels...
Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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