Flat frame exposure length

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Flat frame exposure length

Postby galileo » Wed Mar 22, 2017 6:16 pm

Hi folks, just experimenting with exposure times for each filter (lrgb and Ha) so I'm not messing around in the dark trying to get it right'

Using an EL panel I'm getting these exposures giving me about 35,000 average pixel value:-

lum 0.02 "
red 0.20"
green 0.05"
blue 0.04"
Ha 3.00"

I can understand why Ha needs a much longer exposure but not sure why the red filter stands out from lum, green and blue?

On another note, is it necessary to bin rgb filters and therefore bin the flats too ?

thanks all

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Re: Flat frame exposure length

Postby Gedan » Wed Mar 22, 2017 7:37 pm

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Re: Flat frame exposure length

Postby purgitoria » Wed Mar 22, 2017 8:53 pm

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Re: Flat frame exposure length

Postby carastro » Thu Mar 23, 2017 12:34 pm

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Re: Flat frame exposure length

Postby galileo » Fri Mar 24, 2017 9:56 am

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Re: Flat frame exposure length

Postby julianr » Fri Mar 24, 2017 10:52 am

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Re: Flat frame exposure length

Postby galileo » Fri Mar 24, 2017 11:35 pm

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Re: Flat frame exposure length

Postby purgitoria » Sat Mar 25, 2017 10:56 am

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Re: Flat frame exposure length

Postby galileo » Sun Mar 26, 2017 6:36 pm

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Re: Flat frame exposure length

Postby purgitoria » Sun Mar 26, 2017 7:31 pm

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