#Easyhdr rar iso
#Easyhdr rar series

In case of color RAWs fix the white balance at import and do not filter the noise too much - it should be done after stacking.

Always use raw photo formats - either RAWs from DSLR cameras, or FITS from astronomical cameras.

#Easyhdr rar series

In many cases however you can just live with taking a series of photos with exactly the same settings - the more such images, the better (and it doesn't mean 10, but rather 50-100, depending on the quality). If it's necessary (like in case of crescent moon, or nebulae like M42) take many different exposures at small exposure settings steps - preferably as small as 1EV.

The quality of equipment (expensive!) matters a lot, but let's be fair that getting maximum out of what you have and can afford is equally fun, even if the results are far from what others can achieve. You have to spend some time on setting the focus right and keep in mind the limitations of your telescope, guiding, lenses, cameras. Photos should be taken in good conditions in terms of weather, light pollution, etc.If you're aiming for the best realism and quality, you should ensure the following:

#Easyhdr rar iso

Seven photos processed with easyHDR - all taken at ISO 400, exp. HDR photo of a partial lunar eclipse - September 28th 2015, about 15 minutes before totality. Having an image with elevated dynamic range, you still need to compress it (apply tone mapping) in order to make all the details visible on a screen, or a print. Further dynamic range boost requires merging photographs taken at different exposure times. That is one of the ways to dramatically increase the dynamic range - by making the SNR (signal to noise ratio) higher. Because of long exposure times and high ISO gain that are often used, it is worth to take many photos and stack (average) them. All of these are hard to be photographed in a single shot. One of them is the high dynamic range of many of the photographed objects - comets, nebulae, galaxies, crescent Moon, partial lunar or total solar eclipses. What is more, there are the same problems as in the 'daylight' photography. ), the ambient temperature, wind, atmosphere's turbulences, thin clouds, light pollution, etc., that all makes astrophotography difficult.

The quality of tracking, the optics (including aperture of the optical system), the imaging sensor (dynamic range, noise level. The exposure times can be very long (even minutes) and the lenses, or telescopes used, often characterize with big focal lengths (hundreds to thousands of millimeters), while because of Earth's rotation (and not only), the celestial objects have to be tracked during the exposure. Photography of astronomical objects brings many problems as compared to the photography as most people know.

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