How many images are needed for stacking?
This depends mainly on the noise level of your camera and the amount of light pollution you need to reduce.
As a general rule:
- Higher noise → More images for stacking.
- More light pollution → More images for stacking.
That said, I have found empirically that (to get a good shot of the galactic center of the Milky Way) stacking about 15 minutes of pictures is more than enough to reduce noise tremendously and therefore be able to apply a lot of light pollution reduction without noise being an impediment to it.
For example, if you set an exposure time of 10 seconds (that’s 6 images per minute) you would have about 90 images for stacking.
Personally, for photographing the Milky Way I usually stack between 75 and 150 images (depending on whether I set a little more or a little less exposure time). But I move in that range of images.
Related Articles
Do all images need to have been captured with the same parameters for stacking?
No, but yes. Let me explain. There is no problem in stacking images captured with different parameters in Nebulb, but for noise reduction these different images do not add, but subtract. That is, if you stack many images and some of them have ...
In the case of captures taken over many hours with a star tracker, is it necessary to correct the orientation of the images before stacking so that they are all oriented in the same way?
In principle you don't have to flip any image (and even less if you stack in RAW). Nebulb always performs stacking with all images oriented in the same way. This is something that Nebulb manages internally based on the information of the images and ...
Can the masks be modified after the stacking is finished?
Yes, Nebulb also allows you to modify any of the masks once the stacking has been done, for this purpose: 1. Modify the mask as desired. 2. Once you have made the necessary modifications press the refresh masks button (so that Nebulb uses the new ...
No star reflections appear in the water when stacking star trails with Nebulb
Cuando realizas un apilado de star trails en Nebulb tienes dos opciones para la representación de la parte del suelo: Sigma-clipping Maximum Well, if you select the sigma-clipping option for the ground, the stars will not appear reflected in the ...
After a certain time the Nebulb stacking is paused
It is very likely that this is related to the power plan that is set in Windows, since, if the high performance plan is not selected Windows can make the computer go to sleep after a certain time without the user has interacted with the keyboard or ...