Question about proms and shg

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highfnum
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Question about proms and shg

Post by highfnum » Sun Dec 04, 2016 11:40 pm

I know you can record
Proms on ha hb cah cak and hed3 lines
I guess maybe if bright enough h delta h gamma

But has anyone seen or recorded proms in sodium line, magnesium
Etc.

Is there reason they show up in some but not others

Wah
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Re: Question about proms and shg

Post by Wah » Mon Dec 05, 2016 5:54 am

Do you mean these lines?
viewtopic.php?f=8&t=13527

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Re: Question about proms and shg

Post by highfnum » Mon Dec 05, 2016 12:00 pm

Cool !
did you ever get full disk showing proms
In na or mg or other strange lines

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Re: Question about proms and shg

Post by highfnum » Mon Dec 05, 2016 12:02 pm

Do you have to crank up exposure or gain
To.get them

Wah
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Re: Question about proms and shg

Post by Wah » Tue Dec 06, 2016 6:39 am

I only could see proms above the limb, but couldn't see special features on the disk.
I think it was because they need ultra narrow bandwidth.

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Re: Question about proms and shg

Post by highfnum » Tue Dec 06, 2016 11:40 am

that's still pretty good
can you post example if you have one

again
do you need to crank up gain or exposure to get them ?

Wah
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Re: Question about proms and shg

Post by Wah » Wed Dec 07, 2016 4:03 pm

I don't have example now.
I remember the exposure was much longer than usual Ha imaging as the proms were very dim.

highfnum
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Re: Question about proms and shg

Post by highfnum » Wed Dec 07, 2016 6:05 pm

I figured -- gotta try this

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