In 2016 we bought the Trade of repairing Moore Jig Grinding Heads from GRIND TECH / Emco  We had long used GRIND-TECH’s service to refurbish our
Heads, and been very happy with their service. Naturally we were very sorry that they were retiring from this activity.

 Given our need for this work to be done – and suspecting that other would have the same need - we move the activity to Billingshurst. Two of our toolmaking
colleague - each with over thirty years of experience - were trained to perform the work


grinder head repair

Our colleague Frank Jennings hard at work on a Head, with the precision balancing equipments in the background.

We keep a stock of the high precision replacement bearings needed during the refurbishment

Should your Heads need work done on them, we would be please to give you a cost and delivery time for a repair

Contact Andy Bagley at       This email address is being protected from spambots. You need JavaScript enabled to view it.   and on  ++ 44 (0) 1403 787610

A short video of diving on the Tiare off Alor in Indonesia in September 2018

Two version are offered, depending upon your bandwidth



Small picture



1920 by 1080 picture, basic video  - fast link needed

JEM / SMILES worked on the International Spaces Station - with zone-destroying stratospheric BrO as a trace gas target. The 640 GHz SMILES radiometer, from its platform on the International Space Station, monitored global distributions of the stratospheric trace gases. It was launched from Japan on an H-IIB Rocket on the 11 September 2009. Sitting inside JAXA's HTV transfer vehicle, it arrived and docked at the ISS on the 18th September and was transfered to the JEM exposed facility.


First Light was achieved on the 10 October 2009 - with our colleagueSatoshi Ochiai-san of the National Institute of Information and Communications Technology, NICT in Japan commenting

Attached is beautiful spectra (on a dirty paper) observed by SMILES. Each line is an integration for only 0.5 s.  We now get around 1600 limb spectra sets every day like attached plot.

First light


SMILES made observations of Earth's atmosphere for 6 months before a failute in the LO cut the mission short.

More detailed results can be found on a set of conference viewgraphs by Makoto Suzuki-san et al from the 5th Limbsounding conference held in Helsinki in November 2009

TK designed and manufactured the Ambient Temperature Optics (AOPT) whoich provided Single Sideband filtering, LO injection (with the source supplied by Radiometer Physics in Germany) and primary beamforming for the main antenna though the use of a Back-to-Back (BBM) corrugated horn. Much of the testing was performed by Axel Murk in the IAP in Bern




Image of the AOPT: At the top is the Inatani variant of a Martin-Puplett Interferometer, providing the SSB rejection (Upper sideband are placed in one polarization and lower sideband in the other). At the bottom right can just beseen the internal part of the overmoded Back-to-Back Horn, which defines the beam on the sky, via the antenna optics. All of the optics was positioned by direct machining - no adjustment were required.


TK also provide corrugated horns to define the beams within the receiver and couple power to the 4k Sumitomo cooled SIS mixers.

 JAXA's kindly provided the following images of the whole instrument:

Jaxa a

The SMILES scanning dish is shown above, and the two images below are of the whole SMILES instrument.


Jaxa d



NASA has kindly provide two images - of the HTV arriving at the ISS:

Jaxa f


Jaxa g

And SMILES being transfered to the JEM exposed facility using two robot arms


There is evidence that the Frequency Selectrive Surfaces, based upon Inatani-variants of a Martin-Puplett Interferometer have survived the launch. Ochiai-san kindly supplied us with this plot of the change in the AOS output from the two mixers between pre and post launch measurements. He comments thus:

Attached is a comparison between in-orbit and the ground-test. Becausethe temperature of the SLO is lower than that at the ground test, thecurves are shifted to the left, but the relation between SMX-R and SMX-Tis not changed. (The peaks are closer in vacuum than in the air. The resultis consistent.) So we think that the FSP's spacing was not changed during launch.


slopower ifpower 20091006


and also commented thus on the performance of the SSB filter after the First Light measurements arrived:

The function of the FSP can be confirmed in the attached plot, 649.259 GHz is a image frequency of ozone line at 625.381 GHz (Doppler shifted by 10 MHz from 625.371 GHz) against LO frequencyof 637.32 GHz.  You cannot find any trace of leakage around this frequency from image band. (649.275 GHz + 10 MHz is other line by ozone isotope.


SMILES stands for  Superconducting Submillimeter-Wave Limb-Emission Sounder

While installing an Obama-stimulus-funded HiPER ESR bridge in PNNL at Hanford River in southeastern Washington State, Trevor Walker and Richard Wylde in 2010 climbed to the sulfur covered peak of Mt. Adams, with a guide from the American Alpine Insitute

Images are below



Mt.Adams bottom


Tent mt adams


TK Adams early morning