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Old 18-12-2018, 10:32 AM
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multiweb (Marc)
ze frogginator

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Join Date: Oct 2007
Location: Sydney
Posts: 22,060
Quote:
Originally Posted by Jasp05 View Post
Quantum efficiency is to do with the amount of light that hits the sensor that gets recorded as signal?? 80% QE is 80% of all photons get recorded?
The higher the QE the more sensitive your camera is and it will depend on wavelength so you can find the curves online for your chip model. 80% is very good. Mine is ~50%

Quote:
Originally Posted by Jasp05 View Post
Full well capacity is the depth of the pixel to record signal before being saturated. Is a small well capacity a bad thing? There can be some quite large differences in this parameter. Example being an ASI1600mm has 20k full well but an asi294MC PRO has nearly 64k. 3 times the capacity..
The longer you expose, the more you fill your well to the point you won't record anymore when you reach that limit and it saturates (pure white). In general a camera with deep wells will have a bigger dynamic range for long exposures (from dark to bright) than a camera with shallow well for the same exposure time where data might be white clipped.

Quote:
Originally Posted by Jasp05 View Post
How much does actual Pixel count affect the images? as in Megapixels. Does more Pixels make the image seem smoother with more detail? (With the understanding that more pixels generally means smaller pixel size and more exposure time required).
The smaller the pixel size the finer the details you can capture, provided your scope image scale is matched to your camera.

Don't know much about the ZWO cameras. Read noise becomes an issue when you do a lot of short subs, less when you do very long subs.

For $1k you can pick a very decent second hand camera.
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