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Update on WPO spectro
After the initial trials I ended up re-doing the pick off mirror support ( the most fiddly bit of building this design... believe me!) I then found that the grating had to be inclined by about 1.5 degree to "throw" the return beam onto position (ToUcam/ 6mm Mono eyepiece). Now done and everything back to working order. Have re-done a couple of slits ( If Stu can me help it would be great!!!!!) one very narrow ( 10-15 micron?) and one wider ( 0.5/ 0.7mm) for stellar work.
Won't get the chance to try it before the weekend, but keep you posted.
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