I noticed that your thorlab quote includes concave CYLINDRICAL mirrors (CCM254-100-G01). This does not appear to be correct (perhaps you noticed already), I think they should be concave SPHERICAL mirrors (Thorlab part No. CM254-100-GO1). The price is much lower ( USD58 per mirror for CM spherical mirrors, compared to USD 165 per mirror for the cylindrical CCM mirrors).
Presumably it's a lot harder to make a good cylindrical mirror than good old spherical ones.
Hopefully you ordered the right parts (USD 200 saving!).
Cheers,
Hamish
James Foster wrote:Not a question, but for anyone considering this UVEX3 spectrograph's ThorLabs components, the total (without tax/ shipping) comes to $685.60 US. (300 & 1200 l/mm gratings)
When you cost the CCD/CMOS camera, guide camera, and other components (like metric taps, screws, Kapton tape, etc), the cost(s) gets closer to $2.5-3K US.
This is also without the cost of the 3D printed components, so please be sure you have the technical skills/courage and funds before embarking on this project.
James