Image question and Blue/Green Filter

[Saturn488]

Been capturing a lot of data the last few nights but the clouds and transparency has varied. I have some LRGB shots that are brighter than others (light cloud cover I think).

Does anyone here still use those shots if they are a little bit more exposed?

I am using the LRGB ZWO filters 31mm in a ASI178MM-Cool.

Also I have noticed the blue and green filter are a little darker than the red and lum. Is this due to the wavelength or other issues I might be having.

I am trying to find a monochrome LRGB photo of each channel to see.

Thanks.

[Joshua Bunn (Joshua)]

Hi Chrys.


The lighter and darker exposures are fine to go together in the stack, provided the lighter ones still have a decent S/N ratio... different brightness values will be delt with during normalisation when stacking.


It's quite normal for some filters to be brighter than others, obviously Lum will be the brightest. This can be due to your cameras response to different wavelengths. This to will be sorted out with you RGB combine ratios.



Josh

[Saturn488]

Originally Posted by Joshua Bunn

Hi Chrys.


The lighter and darker exposures are fine to go together in the stack, provided the lighter ones still have a decent S/N ratio... different brightness values will be sent with during normalisation when stacking.


It's quite normal for some filters to be brighter than others, obviously Lum will be the brightest. This can be due to your cameras response to different wavelengths. This to will be sorted out with you RGB combine ratios.



Josh

Thank you, Josh.