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Andrew Smith

Hi I have just rejoined the BAA after a gap of more than 50 years. My main observational interest is using automated spectroscopy for searches (potential new Be stars etc.) and developing an interest in spectroscopic binaries and giant stars.

I have home made fiber coupled medium resolution echelle R ~8000 and low resolution transmission grating R~300 spectrographs. The optical design of the R~2000 spectrograph is complete and the components ordered!

Local society membership: Chester

2017 Dec 15


2017 Nov 29

2017 Nov 18

2017 Mar 31


2017 Jan 26

11:45 UTC

Test image from the medium resolution echelle spectrogrqph. For fun it was captured using The Sky X Pro flipped in MaxIm DL 4, extracted and calibrated in BASS and roughly normalised and measured in ISIS!

Regards Andrew

11:01 UTC

I am here setting the focus of my new, home made, fibre fed echelle spectrographs focus. It has a target R ~ 8000 and initial test show this should be reached comfortably. It is in a temperature controlled enclosure and is currently undergoing final testing in my kitchen before being moved to the observatory. The temperature control is to improve the accuracy of radial velocity measurements.

Regards Andrew

2016 Dec 28

20:23 UTC

While an old observation this was the first reported case (as far as I know) of an amateur discovering a candidate Be star using an automated spectroscopic search. I found that Thierry Lemoult was also undertaking such a search at the same time. I was just eye-balling the spectra as they came in, while he was reducing his, so I sneaked in first, although Thierry found more. Our results are here

With spectroscopy taking off at the BAA it shows one example of what can be done at low resolution (R ~ 320).

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