I don’t know why the press has latched onto the name “the green comet” for C/2022 E3 (ZTF) – most comets are green, and it’s too dim to see any color at all if you’re viewing it through binoculars or a telescope.
But through 2 hours of total exposure time, the colors do emerge, and it is in fact mostly green. It’s brighter now as it’s closer to Earth, but its tail is still underwhelming. But hey, it’s a comet.
Perhaps the most famous Hubble image is the “Pillars of Creation,” towers of gas where new stars are being born within the Eagle Nebula (formally M16.) My backyard telescope under the thick Florida atmosphere can’t match the resolution of Hubble, but it can still capture this object. I’ve imaged this before, but this is the…
Formally Abell 33 or the even more catchy name PK238+34.1, the “diamond ring nebula” is a planetary nebula – that means it’s the gas blown off by a dying star, not too different from our own sun. This one’s interesting due to its almost perfectly spherical shape, its cyan color from ionized Oxygen gas, and…
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I wasn’t able to travel to the path of totality, but here from Florida we still had a partial eclipse. Here’s my shot at its peak, viewed through a special solar telescope using a Hydrogen-Alpha filter to bring out all the roiling detail of the sun’s surface. Check out those prominences around the edge!
Formally SH2-155, the Cave Nebula lies about 2,400 light-years away within the constellation Cepheus. It’s part of a much larger region of gas and dust (called a molecular cloud). This region is mostly ionized Hydrogen, but there’s just enough Oxygen – blue in this image – to make for a pretty picture. Capturing that Oxygen…
I’ve imaged this one before, but I keep coming back to it because I just can’t believe its golden color is real. But even after applying all I’ve learned about color calibration – I can say pretty definitely that these are its true colors. It’s also benefited from advances in image processing software, making the…
