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Chroma Filters Orientation (Front/Back?)?

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#1 GeneralT001

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Posted 20 March 2019 - 12:39 AM

High, was wondering if the Chroma filters need to go in one way or the other.

 

It seems my Ha and OIII 50mm unmounted filters look odd and I am wondering if there is a front and back that I need to have set correct for them. Heres what I'm getting for Ha (5 min exp and the mean seems quite high at 3300 ADU):

 

Test.JPG



#2 sink45ny

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Posted 20 March 2019 - 12:47 AM

I recently had mine out for maintenance and the sides were painted black and there was no visual difference either side.



#3 GeneralT001

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Posted 20 March 2019 - 12:49 AM

IIRC I think the ones I have (unmounted) do have arrows on them...but not 100% sure. I will probably have to take it apart to confirm.

 

Wondering if the arrows should point towards the object or away?



#4 sink45ny

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Posted 20 March 2019 - 12:54 AM

Mine are Chroma 50mm unmounted also.



#5 GeneralT001

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Posted 20 March 2019 - 12:55 AM

That's good to know. Have you ever gotten a Ha sub that looks like the above?



#6 sink45ny

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Posted 20 March 2019 - 02:09 AM

No. I should add my NB filters are 3nm .



#7 sink45ny

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Posted 20 March 2019 - 10:19 AM

GeneralT001 what target were you imaging? Did you shoot a short Lum image to verify that the imaging train was not compromised?

 

No security cameras on by mistake, displaying IR light, or any other light sources?


Edited by sink45ny, 20 March 2019 - 10:21 AM.


#8 GeneralT001

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Posted 20 March 2019 - 10:27 AM

Hi,

 

I'm shooting the "Tadpoles". In the end my issue (as always - was self imposed). 5 min was just way to long for the full moon. I cut it back to 2 minutes and all is well again. In my mind I figured I could still go with a 5 min sub - even with the full moon - apparently not :).

 

I was just looking for answers where a problem didn't exist!! bangbang.gif 


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#9 sink45ny

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Posted 20 March 2019 - 01:03 PM

OK good to know. Glad you worked through it.




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