Category Archive
for: ‘equipment’

Is the potassium magnetometer (GSMP-35) right for you?

The GEM Systems GSMP-35 potassium magnetometer is an optically pumped potassium vapor magnetometer. The GSMP-35 is also known as the “k-mag” just as Cesium magnetometers are know as “Cs-mags”.  As of August 2013, GEM Advanced Magnetometers is the ONLY company offering these magnetometers to the market. The GSMP-35 is the most sensitive magnetometer commercially available. By […]

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Caesium Magnetometers. When Sales and Science Collide.

Modern Mag has created a backpack that can replace the standard backpack that ships with a prominent American Caesium magnetometer. To design this backpack I had to study and understand the Caesium magnetometer specifications. I have used this magnetometer many times in the past (my university owned one), but still wanted to check the latest […]

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Airborne magnetic surveys using unmanned aerial vehicles (UAV) and lightweight potassium magnetometers.

Airborne magnetic surveys using unmanned airborne vehicles need geophysical equipment that is lightweight. GEM Systems now sells an option for a lightweight electronics box case for the GSMP-35 “k-mag”. Optically pumped magnetometers have lightweight sensors, but the electronics boxes can be heavy due to the case material and thickness. Any internal frame that binds two […]

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Are Overhauser magnetometers right for you?

GSM-19 Overhauser magnetometers are the choice of the ground magnetic survey industry. They are the lightest and simplest to use of any magnetometer on the market. With in-built navigation there is no need to carry a handheld GPS. Handheld GPS units can reduce the data quality because they are magnetic. They also add additional and […]

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Don’t do a ground magnetic survey without GPS navigation built into the magnetometer.

Most magnetometers can tell you where they have been, but only a few can tell you where to go. For efficiency, ground magnetic surveys are usually conducted along parallel survey lines – or grids. In the bad old days prior to GPS, these grids would have to be laid out at great expense prior to […]

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How to walk straighter and further with less effort when conducting ground geophysical surveys.

Some walk the line straighter than others. Walking straighter lines when conducting ground geophysical surveys increases the production l-km in a day. Alternatively, if there is a fixed amount of work to do in the day, then straighter lines means less walking and less stress on the body. Walking straight in thick vegetation is never […]

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Modern Mag is an official GEM Systems agent.

Did you know Modern Mag sells GEM systems magnetometers and spares? We have been using GEM equipment for over 17 years. We have experience with all of their magnetometers and can help you choose a system for your needs. We chose GEM magnetometers for our field work because they are simply the best magnetometers to […]

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GEM Systems magnetometer navigation firmware now works. Many improvements coming soon!

Modern Mag in conjunction with GEM systems magnetometers is trialing new firmware for the GEM-19 and GSMP-35 series of magnetometers. For many years there has been a fatal flaw in the real time magnetometer navigation function. A programming error caused the lane guidance and distance to end of the line functions to fail, particularly for very long […]

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Base station magnetometers for ground mag surveys.

While any kind of magnetometer can be used as a base station magnetometer to record temporal variations in the geomagnetic field, some are more accurate and convenient than others. It is convenient to use a base station from the same manufacturer since the software that comes free with those magnetometers can diurnally correct that data. […]

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