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Eagle Owl Optics SQUES Echelle Spectrograph


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It was developed by Martin Huwiler. You can find his posts on the development of it on the Swiss/Austrian spectroscopy group. The announcement of the commercial version is here

http://www.astronomie.ch/forum/viewtopic.php?f=28&t=5597

Other commercial echelle spectrographs for amateurs are

BACHES developed by the pro/am CAOS group and sold by Baader (also an on telescope design) but I have yet to see any user results from it.

eShel from Shelyak (mainly Christian Buil's design) which is fibre fed and stable enough to measure the tiny doppler shifts produced by some exoplanets. It has a good user base with many results out there.

There are also a few other one off echelles being built, mainly by German amateurs it seems. You can find them on the German group

http://spektroskopieforum.vdsastro.de/

The upsides are being able to record the full spectrum at high resolution in one go and the lack of moving parts means they are good for remote operation but there are downsides (eg cost due to the demanding optical design, fixed resolution, complex processing, difficulties with background subtraction)

Cheers

Robin

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Thanks for the info Robin - I will look forward to hopefully seeing some spectra from amateurs in the near future using the spectroscope.

I have seen the Shelyak eShel in operation and it looks very impressive - however from speaking to the owner it does take quite a lot of work to get it all set up and working optimally.

I know of a user who sometimes frequents these forums who is in the process of building an echelle it will be interesting to see how he gets on.

cheers

John

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hi

I'm happy if you are interested in SQUES echelle spectrograph.

on my website i have some informations in english, if you interested in usable orders and resolution

it is a new link here:

https://www.dropbox.com/s/xbwyxf5d1dw83se/Solar%20spectrum%20recorded%20with%20SQUES%201.1.pdf

questions about the spectragraf can be sent to my mail:

http://www.eagleowloptics.com/eagleowloptics.com/Info.html

cheers

martin

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