Recently I have teamed up with Michael van Doorn to make some imagery of M33. Michael uses a Celestron C11 with Hyperstar at f/2. This setup has a focal length of about 560mm and so does give a wide field with a high sensitivity. We decided to combine the RGB and Ha from the Hyperstar …
Recently I found that the images taken for the Digitized Sky Survey around 1990 are about the same image scale as the images I take now with my TEC-140. So I decided to make a comparison between an image from 1990 and 2013 of NGC 7331 and Stephan’s quintet. It clearly shows the stars are …
NGC 7331 (in the lower left of the image) is a galaxy similar to our own galaxy in the constellation Pegasus at a distance of about 50 million lightyears. It was discovered in 1784 by William Herschel. Below NGC 7331 a few other galaxies can be seen that are part of the so called Deer …
During my holidays in the Eifel in Germany I have been imaging NGC 4725. NGC 4725 is an intermediate barred spiral galaxy about 40 million light-years away in the constellation Coma Berenices. NGC 4725 is a Seyfert Galaxy, suggesting an active galactic nucleus containing a supermassive black hole. Observation data (J2000 epoch) Constellation Coma Berenices …
During my holidays in the Eifel in Germany I have been imaging NGC 4725. NGC 4725 is an intermediate barred spiral galaxy about 40 million light-years away in the constellation Coma Berenices. NGC 4725 is a Seyfert Galaxy, suggesting an active galactic nucleus containing a supermassive black hole. Observation data (J2000 epoch) Constellation Coma Berenices …
ARP objects come from the ARP atlas of peculiar galaxies, written in 1966 by Halton Arp. This image shows 2 ARP objects in one field of view in the constellation of Ursa Major. The top object is ARP 214, also known as NGC 3718. It’s a mag. 10.7, 9.2′ x 4.4′ galaxy of the SB(s)a …
Yesterday evening I wanted to do some imaging after an astro society meeting. Because of some problems I was only able to start after 1,5 hours with imaging. When I finally got my first exposure clouds came in. After 1 exposure it was already over. I didn’t want to give up, so I set up …
This image shows a combination of visible light imagery of the Hubble Space telescope and infrared data from the Spitzer space telescope of M51, aka the Whirlpool galaxy. The Whirlpool Galaxy (also known as Messier 51a, M51a, or NGC 5194) is an interacting grand-design spiral galaxy that is estimated to be 23 ± 4 million …
Hubble imagery of NGC 3256. Galaxies don’t normally look like this. NGC 3256 actually shows a current picture of two galaxies that are slowly colliding. Quite possibly, in hundreds of millions of years, only one galaxy will remain. Today, however, NGC 3256 shows intricate filaments of dark dust, unusual tidal tails of stars, and a …