Image Aquistion

Craig Akins

Mr Block, I know and apologize in advance for this not being a PI specific question.

Can you point me to any videos, discussions you might have given to acquiring data? As in, How much for instance through a LRGB set? I was taught in the beginning, 50% of L and the rest spread across RGB. Is this a good standard to go by or ... ? I know its a lot dependent on target compisition, would that be the main determining factor?

Craig

BlockHead

Yes that proportion is what I used to do for LRGB acquired data.

However, the 20% of time or so in each color was made more useful by the fact the chips were binned. This is no longer a benefit for CMOS sensors. So the real question I think is... is doing an L even necessary?

(you can always combine the RGB masters and make a slightly better image that can be an L).

-the Blockhead

Craig Akins

You mean, create a synthetic Lum from the RGB and then combine it back into the rgb for your lrgb frame? hrm. That would give more time to aquiring rgb frames.

Well, would there be any benefit from doing at all?

 I am very new to astrophotography so I would defer that to you...

Craig

PS, if skipping the lum filter, then what ratio for rgb? again target dependent I suspect.

BlockHead

Nah... just expose equally in RGB...and yes, you can combine all RGB for a "super luminance."

This is an option... I demonstrate this in one of my workflow videos.

-the BLockhead