GunisG

Yeah you're right, but the question is; is it the illumination of the dust speckles or some sort of vignetting. Because if I take normal photos indoor or outdoors none of the issues arise, its just when I take astrophotography shots? Perhaps its the heavy light pollution since I am in London?

Hi Guys, Here's an example of noticed on all my astrophotography photos: A green halo/highlight:

Hi Guys, I've checked both my lens and my sensor; it has dust around the same corners of the issue, it could be that. And also how do I take flats? Or what does it mean generally speaking? Thank you so much in advance, Swiss

Hi Guys, I've been a beginner in astrophotography, I've just taken a few photos and my photos regardless of the lens have a green highlight across the image and somewhat a round circle on the left side and bottom side of the image; is this due to low light shooting? Im using the A7 iii and the 24mm 1.4 GM, in my backyard in London with a bortle 10 sky. If someone could give me help I'd greatly appreciate it. Thank you, Swiss