This Is M51, Also Known As The Whirlpool Galaxy It Is A Pair A Galaxy Currently Interacting Together.

This is the (Great) Orion nebula, also known as M42, it's a giant cloud of interstellar dust and gas. In it many new stars are currently forming, some of them also having planets forming around them.

It is one of the most visible nebula in the northern hemisphere, you just need a pair of binoculars to start observing it. I find such nebulae mesmerising, and wanted to share this image I took.

Photos of the two major components of the veil nebula, the first one is the eastern veil aka C33 and the second one (the one with the star in the middle) the western veil aka C34. Those are part of a supernova remnant (left over gas and dust from a supernova), their colour are due mainly to two gases present inside. The blue/green colour comes mostly from oxygen (as OIII emission around 500nm by doubly ionised oxygen) and a little bit from hydrogen (as H beta emission at 486nm) where as the red comes nearly completely from hydrogen (as H alpha emission at 656nm).

The first photo is about 2.5 hours of exposure (30x3 min for RGB + 10x5 min for H alpha) and the second one about 3 hours (36x3 min for RGB + 16x5 min for H alpha).

The additional photos taken in hydrogen alpha are added to the normal RGB photos to intensify the colour and visibility of the hydrogen gas (it doesn't show well enough with standard RGB in part due to the lower amount of light it emits an in part due to the sensor's response itself) Here is a version of C33 (eastern veil) with the stars removed as my friends were very impressed by it, hope you like it too.

Just got a week of clear weather will I had access to my telescope, managed to get a good amount of data, treatment will have to wait though (I have some exams in 2 weeks). In the meantime, here's a quick test I did with the horse head nebula.

This is a SHH composition (there is nearly no OIII emission in this nebula and I did bother imaging in this wavelength).

This is a photo of the Andromeda galaxy I took nearly 5 years ago. The dark parts of the galaxy are gigantic clouds of dust and gas in which no stars and planets are born. This galaxy is one the closest one to our own, and yet it's 2.55 million light years from us, It's composed of about 1000 billion stars, in a few billion years it will collide with our own galaxy.

The two lighter blotches around Andromeda are two satellite Galaxys that orbit around Andromeda and are also composed of millions of stars.

Those numbers are so big they start to get inconceivable, and that's only a small fraction of what exists out-there. We are not much in the grand scheme of the universe, but when you look at the night sky and the wonders of the universe you can feel at least for a little while that you're part of it.

sometimes astronomy camera companies will post about their horrible attempts to fix hardware problems with software. normally these are unremarkable.

and then sometimes they contain a beautiful single sentence that will live in your brain forever

There might not be sound in space, but there is quite a lot to listen to in the radio frequencies (especially when it comes to the planets of the solar system).

(the full article : https://www.jpl.nasa.gov/news/nasas-juno-spacecraft-enters-jupiters-magnetic-field ) Some ''similar'' sounds are also present on earth with for example the reverberation if radio waves emitted by lightning.

I'm trying to find a clean, concise, factual video of pulsar pulses but the top results on youtube are all fake clickbait bullshit. Where are the videos from professor so-and-so with 10 subscribers of simple black and white graphs.

(this page has what I'm looking for but afaik none of these videos are on youtube)

Picture of IC59 and IC63. This is a pair of nebula located near the star γ Cassiopeia, the big star at the bottom, which is responsible for making the nebula glow. Both nebula are composed of ionise hydrogen responsible for the red colour (especially on IC63) and colder dust/gas responsible for the blue colour (most visible on IC59). γ Cassiopeia can make taking photos of those nebula difficult due to the halos it produces, I did my best to limit its impact during processing, but there is still a faint blue halo around it. IC63 is also known as the Ghost of Cassiopeia due to its shape, it was discovered in 1893 by the German astronomer Max Wolf.

Image taken using a CarbonStar 150/600 newtonian telescope with a 0.95 coma corrector, ZWO ASI294 monochrome camera. 12x300s image for each filter (LRGBHa), total imaging time 5h, stacking and processing done in PixInsight. Details of both objects: IC63

IC59

This is the Crescent nebula it is located in the constellation Cygnus. This nebula is the result of the center star first becoming a red supergiant and ejecting some of its outer layers of gas in space, that gas cloud was then shaped into a bubble by the stellar winds emitted by the central star when it later turned into a Wolf–Rayet star.

The resulting gas bubble is heated and ionised by both the UV rays edited by the start and the stellar winds causing it to glow. Wolf-Rayet stars are the final step of some of the most massive stars before they explode into supernovas. In the case of the crescent nebula, the central star is expected to go supernova within the next few hundred thousand years (We probably still have quite a bit of time left before we observe that).

When a star goes supernova, some of the matter that composed the star is blasted off into space at extremely high velocities (up to 10% of the speed of light). This matter will then slowly (few hundred to a few tens of thousand of years) slow-down and cool-down to for me vast clouds of interstellar dust and gas. This second photo is a part of such a gas cloud, the veil nebula (the center of the western veil, also known as C34). In short, this is the photo of what's left of the corpse of a star that exploded about 10 to 20 thousand years ago.

Ok, so I finished the processing of my new photo of the Flaming Star Nebula (IC 405)

Image taken in SII and Ha with a few RGB images to have the correct star colours. This is technically an SHH combination image but with a narrowband normalisation and a lot of curve modifications (with and without colour masks) to get colours/contrast that I liked. I already had taken a photo of this nebula, but it was using mostly RGB data with a bit of Ha (and a lot less integration time). It did show the dust reflection way better, but I like the contrast we can see inside the nebula's gas on this one. Thanks to @shaythempronouns for suggesting the use of an SII filter to image this nebula. Starless version :

(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 narrowband filter. 5x120s image for each colour filter (RGB), 29x300s for the Ha filter and 33x300s for the SII filter, total imaging time 6h 35min, stacking and processing done in PixInsight. Photo taken mid-January)