prom of the day May 31st 2023 with spectro

[ChrisHalpha2017]

Hello ,

Today was beautifull... and so was this prominence...

16h21 600 tmm_T.jpg (330.02 KiB) Viewed 999 times

16h24 600 tmm Barlow x2 reduite.jpg (405.51 KiB) Viewed 999 times

Chris..

[ChrisHalpha2017]

Also ; as the quality of the sky allowed it I tried to image the prominence in different wavalenghs..
I added the colors in order to give the same hue that I saw in the eyepiece...

The Helium line was rather faint ; the H beta was quite briliant and well defined. And the H delta was rather hard to image and a bit ghostly but still visible..

PS : notice the varying degree of definition increasing when the wavelengh shortens.

Helium_ coloré.jpg (366.61 KiB) Viewed 989 times

h beta 2400 tmm.jpg (382.19 KiB) Viewed 989 times

H delta +.jpg (396.32 KiB) Viewed 989 times

CHris .

[Montana]

Terrific comparison of the prom in the different lines. It looks like Hbeta is a good one for proms!



Alexandra

[ChrisHalpha2017]

thanks very much but when you see it live you realize how strong the emission in H alpha is : its so much briliant!! no wonder its the line used most frequently.

[highfnum]

great stuff

[highfnum]

how did you find(identify) H-delta
would like to try with SHG

[ChrisHalpha2017]

its in the blue region of the spectrum and the prominence is also pretty bright so you cant miss it but try first with a slit not too wide to find the reversal of the line .