I just started astrophotography a few months ago and am starting to get a very vague intuition about the imaging pipelines and what things like h-alpha filters can do to amplify certain features. But (possibly because I'll likely never do it) I had no idea how much occlusion is happening in nebulous regions.
Galaxies in infrared definitely lose a little something for me.
Quick note: The field of view of the visual spectrum image i linked above is ~4.5 arcminutes, which at the 7000ly distance to the pillars of creation mean the image spans about 9 light years from the left to the right edge. If you download the fullsize jpeg, each pixel represents about 7 billion miles, approximately the diameter of pluto's orbit. On a 96dpi monitor a star the size of our sun would be approximately 1 millionth of an inch.
https://esahubble.org/images/heic1501a/
I just started astrophotography a few months ago and am starting to get a very vague intuition about the imaging pipelines and what things like h-alpha filters can do to amplify certain features. But (possibly because I'll likely never do it) I had no idea how much occlusion is happening in nebulous regions.
Galaxies in infrared definitely lose a little something for me.
Look at ngc891 in visible light for example: https://www.wikidata.org/wiki/Q490345#/media/File:N891s.jpg
Here it is in a bunch of different IR wavelengths: https://www.researchgate.net/figure/Images-of-NGC-891-at-var...
Quick note: The field of view of the visual spectrum image i linked above is ~4.5 arcminutes, which at the 7000ly distance to the pillars of creation mean the image spans about 9 light years from the left to the right edge. If you download the fullsize jpeg, each pixel represents about 7 billion miles, approximately the diameter of pluto's orbit. On a 96dpi monitor a star the size of our sun would be approximately 1 millionth of an inch.