Kristopher Setnes

@kristopher.setnes.net

https://www.astrobin.com/users/setnes/

There are 12 classes in the Shapley–Sawyer system that describe how tightly packed globular clusters appear. A class I cluster is the most tightly packed and a class XII is the least. NGC 5053 (left) is a class XI. M53 (right) is a class V. The difference is easy to see. #astrophotography

Globular star clusters NGC 5053 and Messier 53.

This is what the moon looked like last night. Tonight the moon passed in front of the bright star Regulus. As is the norm for fun things like that, it was cloudy here. 😉 These are monochrome images captured using a narrowband filter. This is my favorite way to image the moon. #astrophotography

Earth's mooncropped area of Earth's mooncropped area of Earth's moon along the terminator

This is the Seahorse Nebula (B150) in Cepheus. It is about 1200 light years away. I took this image last weekend from Minnesota Astronomical Society's Cherry Grove Observatory. There's no mysterious name to explain. This dark nebula really does look like a Seahorse. #astrophotography

Barnard 150: The Seahorse Nebula

I finally got to take my gear away from home last weekend! The clouds, smoke, and calendar all worked together... for one night only. This is part of dark nebula LDN1251. LDN stands for Lynd's Catalogue of Dark Nebula. The catalog was published in 1962 by Beverly Turner Lynds. #astrophotography

Image of part of the dark nebula, LDN1251.

This is the Whirlpool Galaxy (M51a & M51b). This lies under the end of the handle of the Big Dipper. The two galaxies are interacting. They are about 24.5 million light-years away. This image was made from 19h and 20m of exposure time... lazily taken over three years. #astrophotography

Image of the Whirlpool Galaxy

Messier 94 This was made with just 5 hours of images from a dark location in Minnesota. This galaxy has an interesting inner and outer structure. There was also a study that suggested this galaxy has a lower amount of dark matter than other galaxies. Is this still accurate? #astrophotography

image of the Cat's Eye or Croc's Eye Galaxy (Messier 94)

I was one of the many lucky people to have captured a meteoroid impacting the moon during the Jan 20, 2019 eclipse. My setup back then was crude compared to now. Instead of video, I was capturing still images in short bursts to stack later. Don't miss the next lunar eclipse! #astrophotography

This is an averaged stack of 40, 1/8 second exposures all taken within about 8 seconds of each other.  Within those 40 frames is the frame that caught the meteoroid impact.  In order to show that frame within the image, I applied it as a layer on top of the stacked images.This is a crop of the single frame that captured the impact... in all its noisy glory.