Profile for spectroscopy?

[Forum_2014]

Hi guys
I`m trying to see if I can use AA5 for spectroscopy. I have taken a `profile` of Nova Del but the vertical axis on the profile screen cuts off the peaks of the graph and I`m wondering how this can be rectified please. I`m using an Atik 314L ccd which has a brightness limit of 65535 which seems to extend beyond that on the graph?? It would also be very helpful if I could allocate values on the horizontal axis at the points A and B shown which would then calibrate the graph horizontally to id other elements!. The Y axis is not really important! On this plot point A would be `0` and point B would be the Halpha point ie 6562 angstroms
Thanks
Steve

[Forum_2014]

Steve,
I also use AA5 and a 314L.
the profile feature is neat to check out the spectral profile.....
The reason you see the top clipping....the CCD at these points is saturated!!
I don't know any method to apply a different scale to the profile
Edit:
Actually you can save the profile as a text file.... this gives intensity for each pixel. Knowing the dispersion you could import into Excel and add a wavelength column then display the graph.....

----------

"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before....
https://groups.yahoo.com/neo/groups/ast ... scopy/info
http://www.astronomicalspectroscopy.com/