M87 is a large elliptical galaxy in the constellation of Virgo. It has a large supermassive black hole at its centre, a jet of which can be seen in the second image.

M104, sometimes called the Sombrero Galaxy, is a spiral galaxy in the constellation Virgo. Seen close to edge-on, a prominent lane of dust is visible along the edge of the disk.

M63 is a spiral galaxy in the constellation of Canes Venatici. In the optical spectrum it appears as a flocculent spiral, without well defined spiral arms. In the infrared part of the spectrum it does show defined spiral arms however.

The Double Cluster in the constellation of Perseus is a spectacular sight in a set of binoculars or a small telescope. The two clusters of NGC 869 and NGC 884 don't only appear close together in the sky, since they're both at the same distance they're close to each other in space

The Horsehead Nebula is a dark nebula. We can only see it because it is blocking some of the light from the emission nebula behind it and we see it as a silhouette. Bonus:the star in the upper left is partially embedded in the dark nebula creating near it a blue reflection nebula

M77 is a barred spiral galaxy located about 47Mly away in the constellation of Cetus. It is also classified as an AGN (active galactic nucleus) galaxy, meaning there is a supermassive black hole at the centre of the galaxy that is currently consuming dust and gas.

NGC 2024, also known as the Flame Nebula, is an emission nebula in the constellation of Orion. The bright star in the image is Alnitak, the eastern most (left in the N hemisphere) star in Orion's belt. The nebula is a star forming region.

M6 is an open cluster located about 1600ly away from us in the constellation Scorpius. A young cluster, it's estimated age is only 94 million years. The blobbiness of the image is due to the low altitude of M6 from the telescope's location so imaged through much atmosphere.

M33 is a large spiral galaxy that is a member of the Local Group of galaxies with our Galaxy and M31; as well as many smaller galaxies.

This image of the globular cluster M70 shows what happens when you look through a lot of atmosphere. At less than 7° above the horizon from the site this was taken at, you are looking through almost 5 times as much air than at the zenith. Makes for really bad seeing.

M72 is a globular cluster located about 66kly away in the constellation of Aquarius. Like yesterday's M75, M72 is also on the other side of the Galaxy with the core between us.
We don't have a good handle on how globular clusters form, an area of active research.

Since I’m a nerd and have a 3D printer: the Starship Enterprise, Battlestar Galactica, and an Imperial Star Destroyer all to the same scale.

M75 is a globular cluster located about 68000 ly in the direction of Sagittarius. As a globular cluster, it orbits our Galaxy. Its direction and distance mean that it actually on the other side of the Galactic core from the Earth.

The exact identity of M102 is not as clear as you'd think. Some think it may be a duplicate entry of M101. Based on the description of it given by Mechain and Messier it is most likely this galaxy, NGC 5866 in Draco.

Totality of the 20 Jan 2019 lunar eclipse, from the U of Calgary's Rothney Astrophysical Observatory's Baker-Nunn telescope. Eclipse totality is about the only time the BN can image the Moon as the Moon is too bright the rest of the time for the telescope.
If you stack the Lunar images from through the eclipse you get an image of the Earth's shadow.

Interesting that these two tweets showed up one after the other...

Second photo: What M41 looks like when you forget to take the focusing mask off the telescope...

M93 is an open cluster about 3380 ly from us in the constellation Puppis. It is about 390 million years old. These are stars that were formed roughly at the same time in the same nebula. They will slowly disperse into the Galaxy as time goes on.

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