prom of the day JUNE 2nd, 2022 with spectro coronograph

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ChrisHalpha2017
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prom of the day JUNE 2nd, 2022 with spectro coronograph

Post by ChrisHalpha2017 »

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 ..
2022-06-02-_F05628-05634+++++++++++.jpg
2022-06-02-_F05628-05634+++++++++++.jpg (245.11 KiB) Viewed 436 times
champs entier protue 2_++++++.jpg
champs entier protue 2_++++++.jpg (172.54 KiB) Viewed 436 times
protue 1  127 1200  1200 littrow  ++_20220602_140514.381_UT.jpg
protue 1 127 1200 1200 littrow ++_20220602_140514.381_UT.jpg (138.97 KiB) Viewed 436 times
sodium cropped.jpg
sodium cropped.jpg (230.52 KiB) Viewed 436 times
so roughly I get 25 A/mm or 0.07 A/pixel when I use my ASI 178mm
résolution doublet sodium.jpg
résolution doublet sodium.jpg (907.57 KiB) Viewed 434 times



Chris


spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
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fulvio.mete
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Re: prom of the day JUNE 2nd, 2022 with spectro coronograph

Post by fulvio.mete »

Very nice work, Chris.
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Re: prom of the day JUNE 2nd, 2022 with spectro coronograph

Post by Montana »

Lovely proms especially the arch :bow :hamster:

Alexandra


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