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Filters - FS-60cb (visual) - 32/40mm Plossl?

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#1 iKMN

iKMN

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Posted 18 May 2024 - 11:00 PM

I just ordered some Astronomik 1.25 filters UHC, OIII, and Hb.  I’ve had these in 2” but my FS-60 and soon to be here FC-76 dcu are 1.25 visual  backs and I roll 1.25 with these scopes.  I’m not expecting miracles:with these  small refractors but I have access to dark skies Bortle 2 short drive and my place is a 3.  I was hoping maybe to see the California Nebula and NA nebula.  
 

My Pan 24 gives me a rough 4mm exit pupil.  Not sure if this will be big enough for filters use?  A 32 Plossl is a 5.4 exit pupil and a 40mm Plossl is 6.7.   So go with a 40 or 32 plossl or both or am I just wasting more money. I’ll most likely try these in my Pan 24 first and make a decision after but was wondering what CN thinks?

 

thanks in advance for any advice or tips

 

K

 



#2 BKSo

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Posted 18 May 2024 - 11:49 PM

In that case the lowest power should have exit pupil equal to the size of your own pupils.


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