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Asi183mc pro - confirming I need a UV/IR cut filter

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#1 reddog1972

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Posted 13 November 2019 - 01:24 PM

The title says it all... I know I need to use a UV/IR cut with my asi071mc pro, and just wanted to confirm I need one with my new asi183mc pro as well.
Thanks in advance and clear skies!!!

#2 Dynan

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Posted 13 November 2019 - 01:29 PM

An Astronomik L-3 filter made a huge difference in my images with the 183MC-Pro.

 

https://www.cloudyni...-quintet-redux/


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#3 StrStrck

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Posted 13 November 2019 - 02:13 PM

Yes, the specs state Anti Reflective window only https://astronomy-im...183mc-pro-color

 

So, happy shopping waytogo.gif


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#4 lakeorion

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Posted 14 November 2019 - 11:35 AM

My QHY183M is very happily sensitive to IR.  This was taken with a Baader 685 IR pass filter.
_685_integration_registered.jpg
Yes its from a different manufacturer and mono vs. OSC but the chip is certainly capable of IR.
 
Filter before failure, it's cheap insurance against weird halos.

 


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#5 reddog1972

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Posted 15 November 2019 - 02:32 PM

Thank you for the responses to confirm what I'd thought - greatly appreciated, and clear skies!



#6 IC1101

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Posted 15 November 2019 - 08:29 PM

No you do not need a uv-ir block filter. The specs on the zwo site says that the asi294mc pro and asi183mc pro has a D32-2-AR protective window.
https://astronomy-im...183mc-pro-color
That window Is also described with it's bandpass here.
https://astronomy-im...dow-asi-cameras

One less item to worry about.



#7 Dynan

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Posted 15 November 2019 - 11:38 PM

No you do not need a uv-ir block filter. The specs on the zwo site says that the asi294mc pro and asi183mc pro has a D32-2-AR protective window.
https://astronomy-im...183mc-pro-color
That window Is also described with it's bandpass here.
https://astronomy-im...dow-asi-cameras

One less item to worry about.

Then how can you explain the recovery of color in my ASI183MC-Pro colors with an Astronomic L-3 filter?

 

https://www.cloudyni...-quintet-redux/



#8 ZL4PLM

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Posted 16 November 2019 - 01:46 AM

No you do not need a uv-ir block filter. The specs on the zwo site says that the asi294mc pro and asi183mc pro has a D32-2-AR protective window.
https://astronomy-im...183mc-pro-color
That window Is also described with it's bandpass here.
https://astronomy-im...dow-asi-cameras

One less item to worry about.

that is incorrect - The 294/071 and 183 all need UVIR cut filters

 

I use an astronomiks L2 to good effect 

cheers

simon  


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#9 StrStrck

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Posted 16 November 2019 - 07:42 AM

Seems like misunderstanding, bandpass means it lets wave lengths pass through, and the curve is high across almost the whole width of the scale.

 

So, a high percentage of a lot of wavelengths go through the window.



#10 IC1101

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Posted 16 November 2019 - 09:34 AM

I stand corrected. The graph i was looking at was for the D21 which is the uv-ir filter.

my badforeheadslap.gif


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