Photo Of Pickering's Triangle (also Known As Fleming's Triangle) And NGC 6979 / NGC 6974 (the More Diffused

Photo a few galaxies, M81 / bode's galaxy (centre), M82/the cigar galaxy (left) and NGC 3077 (right)

In addition to those three galaxies, there are many other (much) smaller ones hidden among the stars (a few examples):

The red-ish filament visible around M82 are ionised hydrogen gas and dust pushed outwards by galactic-superwind

Those are tough to be a combination of solar winds created by young stars and the shockwaves of frequent supernovas. They mostly occur in starburst galaxy a type of galaxies that experience heightened stars formation generally due to recent gravitational interaction with other galaxies, in the case of M82 the trigger is most likely its neighbour M81.

(Image taken using a CarbonStar 150/600 newtonian telescope with a 0.95 coma corrector, ZWO ASI294 monochrome camera ZWO LRGB filters and Baader 6.5nm Ha filter. 12x180s image for each colour filter (RGB), 6x300s for the Ha filter, total imaging time 2h 54min, stacking and processing done in PixInsight.)

Picture of the helix nebula / Caldwell 63, this one was a bit of a pain to take as this nebula stays relatively close to the horizon where I live, plus, due to the position of trees and building I only get 1h per night to take photos (had to use pictures from two different nights to get to about 2h of exposure).

This object is also a planetary nebula, like M27 I previously photographed, but it appears much bigger (about 2.5 times) in parte due to it being closer to earth (about 650 light-years compared to about 1360 light-years for the dumbbell nebula/M27).

This nebula has sometimes been referred to as ''the eye of god'' I think you can guess why.

The soon to be white dwarf star at the center of the nebula is (to me at least) a bit more visible in this picture than in the one of M27.

Since the weather has been cloudy and rainy for about a month now (not a single night where I could take decent photos), here is a photo of the sun from last summer.

Despite the sun just looking like a bright ball of light at first glance, there are actually quite a lot of things to see on it.

This photo was taken using a specific light filter that enhances the details of the sun's surface. All of those black spots are sunspots, regions of the sun that are colder due to local magnetic fields preventing some of the heat from reaching the surface. The slightly brighter regions visible on the side of the sun are solar plage, zones that are slightly hotter, also due to the local magnetic fields.

Finally, the surface of the sun in the picture looks a bit granular/wrought, that is due to solar granulation, smaller (around 1000 km in width) convection currents (basically bubble of plasma) at the surface. (The resolution isn't great so the granulation is not super clearly visible, unfortunately).

Picture of the bubble nebula and surrounding objects : Top left (the vague group of stars): M52 an open cluster

Center right: NGC 7538 an emission nebula (also known as the northern lagoon nebula)

Bottom center: NGC 7635/the bubble nebula and the surrounding hydrogen cloud

The ''bubble'' part of this nebula is created by the stellar wind (flow of gas, plasma and particle) emitted by the central star at nearly 650 million km/h hitting and compressing the surrounding interstellar gas. The central star (BD +602522) is currently estimated to be about 45 times heavier than our sun and about 4 million years old. Being so massive and thus very hot (it's a type O star) its lifespan is very limited for a star and it should go supernova in about 10 to 20 million years.

BD +602522 is slightly off center from the bubble, this is due to the interstellar gas being a bit more dense on one side and thus slowing the stellar wind more efficiently.

Single exposure to make the central star more visible.

Image taken using a CarbonStar 150/600 newtonian telescope with a 0.95 coma corrector, ZWO ASI294 monochrome camera. 12x300s image for each colour filter (LRGB) and 12x300s for the Ha filter, total imaging time 5h, stacking and processing done in PixInsight.

Starless version of the same image:

Older image where the bubble is more distinct from the background hydrogen clouds :

Photo of the Iris nebula / Caldwell 4 / NGC 7023, I'm very pleased with this one since I finally managed to capture the surrounding dust (barely visible in the 2 previous attempts). This is a reflection nebula, this means that it's a dust cloud reflecting the light from a nearby star. Being one of the brightest reflection nebula visible in the northern hemisphere it's visible in relatively small telescopes (4-6 inch / 100-150mm diameter), unfortunately the outer dust clouds can only be seen on photos. Reflection nebula generally tend to be blue due to a more efficient scattering of blue light compared to red by the dust particles (M45 in my previous post is another good example).

In my new scale, °X, 0 is Earths' record lowest surface temperature, 50 is the global average, and 100 is the record highest, with a linear scale between each point and adjustment every year as needed.

Temperature Scales [Explained]

Transcript Under the Cut

Temperature Scales

[A table with five columns, labelled: Unit, water freezing point, water boiling point, notes, cursedness. There are eleven rows below the labels.]

[Row 1:] Celsius, 0, 100, Used in most of the world, 2/10 [Row 2:] Kelvin, 273.15, 373.15, 0K is absolute zero, 2/10 [Row 3:] Fahrenheit, 32, 212, Outdoors in most places is between 0–100, 3/10 [Row 4:] Réaumur, 0, 80, Like Celsius, but with 80 instead of 100, 3/8 [Row 5:] Rømer, 7.5, 60, Fahrenheit precursor with similarly random design, 4/10, [Row 6:] Rankine, 491.7, 671.7, Fahrenheit, but with 0°F set to absolute zero, 6/10 [Row 7:] Newton, 0, 33-ish, Poorly defined, with reference points like "the hottest water you can hold your hand in", 7-ish/10 [Row 8:] Wedgewood, –8, –6.7, Intended for comparing the melting points of metals, all of which it was very wrong about, 9/10 [Row 9:] Galen, –4?, 4??, Runs from –4 (cold) to 4 (hot). 0 is "normal"(?), 4/–4 [Row 10:] ''Real'' Celsius, 100, 0, In Anders Celsius's original specification, bigger numbers are ''colder''; others later flipped it, 10/0 [Row 11:] Dalton, 0, 100, A nonlinear scale; 0°C and 100°C are 0 and 100 Dalton, but 50°C is 53.9 Dalton, 53.9/50

can I read posts on the internet lightning speed ? yes.

can I read a scientific publication quickly ? also yes !!!

now, can I read a normal book at a somewhat regular speed ? no, I have to re-read the previous page, hell the previous chapter because I forgot what the conversation between the character was about !

Listen to the sound of wikipedia

This is a way to listen to changes to wikipedia. You are literally listening to knowledge being added to the world.

Pluck sounds are an addition, strings are subtractions, and the pitch says how how big the edit is. My heart shudders at this I love it so much.

“the arts and sciences are completely separate fields that should be pitted against each other” the overlap of the arts and sciences make up our entire perceivable reality they r fucking on the couch