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Can I do solar astrophotography with just an H alpha filter?

astrophotography beginner dslr filters solar
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#1 Mordred182

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Posted 27 January 2021 - 03:44 PM

Can I do solar astrophotography with just an H alpha filter?



#2 petert913

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Posted 27 January 2021 - 03:51 PM

No !  Here is a post from earlier CN thread

 

"NO. That is a DSO filter that doesn't reject anything like enough energy to be safe for viewing. Coupled with a solar filter that rejects sufficient UV, Visible and IR radiation, I find a DSO H-alpha like yours does increase contrast. But it can't be used alone.  And it has a bandpass about 100 times wider than necessary for solar "H-alpha" viewing."



#3 TOMDEY

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Posted 27 January 2021 - 03:52 PM

It has to be an etalon to see any H-alpha structure. A Deep Sky H-alpha filter is far too broad and would risk ruining your scope or blowing out your eye or camera.    Tom



#4 demorcef

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Posted 27 January 2021 - 03:53 PM

NO WAY.

 

HA filters are NOT designed for Solar. 

 

You will destroy your camera's sensor, and if you try to view the sun you will destroy YOUR two sensors (eyeballs). 

 

You need either a white light filter that covers the aperture of the telescope, a white light Herschel wedge, or a Hydrogen-Alpha solar filter or telescope (contains an etalon to reject almost all the sun's light energy).

 

White light filter is cheapest, Herschel wedge more expensive, HA solar filter / solar telescope most expensive. 



#5 mmalik

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Posted 27 January 2021 - 05:34 PM

First off, you need a solar scope to image Sun. Even then DSLR/MILC is NOT enough to image sun; all you'll get is a RED disk. Read here... what does NOT work; read here... what works. Regards

 

 

CAUTION: Neve point your unprotected scope, camera or eyes at the Sun!


Edited by mmalik, 27 January 2021 - 05:58 PM.



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