Hello,
a brief moment allowed me to take some images... the seeing is very bad but still...
I took advantage of the fact that I couldnt take more photos to asses the dispersion of my spectro when i use a 1800 lpmm grating and the curved slit..
So i captured the D1-D2 lines and counted how many pixels separated the center or both lines and made some math..
I'm making a fine straight slit to allow a better assesment ..
so roughly I get 25 A/mm or 0.07 A/pixel when I use my ASI 178mm
Chris
prom of the day JUNE 2nd, 2022 with spectro coronograph
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prom of the day JUNE 2nd, 2022 with spectro coronograph
spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
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Re: prom of the day JUNE 2nd, 2022 with spectro coronograph
Lovely proms especially the arch
Alexandra
Alexandra