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Yes, but how does the world look in Narrowband?

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#1 Samir Kharusi

Samir Kharusi

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Posted 19 September 2018 - 03:48 AM

Just received a full spectrum modded Canon SL2 from Hap Griffin, so started playing with it. Below are frames taken using a UV/IR Blocker on the left and an STC Duo Narrowband on the right (10nm passbands at OIII and at H-alpha). White Balance set using one of the white plastic pieces in the frames themselves, i.e. as Custom as one can make things. Just thought I'd share...

 

168142573.jpg

 

I used a Canon 50mm/1.4 lens and, frankly, I was expecting Red/Teal fringes to be prominent, but surprisingly, the lens acquitted itself quite decently; no fringes even at 1:1 inspection.


Edited by Samir Kharusi, 19 September 2018 - 03:52 AM.

  • whwang, happylimpet and TieDyeAstronomer like this

#2 whwang

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Posted 19 September 2018 - 04:25 AM

Thank you for sharing.  This is very interesting.

 

What strikes me is that the green leaves are all gone, while the other things look more or less OK.  



#3 Samir Kharusi

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Posted 19 September 2018 - 05:15 AM

Another tidbit: exposure for the Duo-NB is 15x greater than for the UV-IR cut. That's a lot of skyfog held back!



#4 randcpoll

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Posted 19 September 2018 - 08:13 AM

How interesting! Your last post explains the excellent saturation in the narrow band image. Thanks for sharing.




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