Originally Posted by Merlin66
Managed to get the five minutes of sunshine needed to set up the Spectra-L200 (1800 l/mm grating 0.2A/pixel) with a PST etalon, a SM60 etalon and a couple of Coronado blocking filters.
I did n't have the SM60 fixed to a scope, just hand held infront of the spectroscope and my shaking hand caused some spreading of the bandwidth. I'll repeat the experiment with it in position on the ED80.
The finesse of the PST and the SM60 is very similar (10A) and the blocking filter has a bandwidth around 5A - so a good match.
I'd love to borrow a couple of Lunt etalons/ BF to compare....
So basically the tests were to see if the filters on these scopes were within spec? I envy you, you have all the snazzy top notch gear!
Have you obtained any spectra scans using basic scope and Ba'ader solar filter to record the sun's spectra yet?
I ask because if the spectra of our sun can be matched/wave fitted to another solar system's sun out there, could be a good place for further study for conditions to support life on it's surrounding planets. What do you think, would that work?