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ZWO Ha 7nm vs Astronomik HA 12nm

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#1 MalVeauX

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Posted 21 February 2020 - 07:04 PM

Hey all,

 

Any experience with the difference between these two filters? Price is literally the same.

 

ZWO HA 7nm 1.25"

Astronomik HA 12nm 1.25"

 

Small pixel monochrome sensor, nothing faster than F4, but as long as F10 for utilization application.

 

Very best,


Edited by MalVeauX, 22 February 2020 - 07:55 AM.


#2 OldManSky

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Posted 21 February 2020 - 07:56 PM

Unless there's a new model, the ZWO Ha filter is 7nm, not 6...

I have the ZWO Ha 7nm and the Astronomik SII 6nm filter.  I haven't seen any significant difference between the two.  Neither gives halos around stars, contrast compared to background is similar, quality of frames is similar.  I'm quite happy with both.

The biggest difference between the 7nm and 12nm will be the background levels, since the 12nm will pick up a considerably wider range of light around the target Ha emission line.  


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#3 MalVeauX

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Posted 22 February 2020 - 07:56 AM

Thanks,

 

Yes, sorry, updated the correct 7nm.

 

Interesting to know your comparison, thanks!

 

Very best,




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