NGC 3521 is a galaxy in the constellation of Leo that has been imaged by the Hubble Space Telescope in 2001. This data was never used to create an image by the Hubble team, but now because of the hidden treasures contest I decided to retrieve the data and process it the way I like …
Here is a movie made with a Lunt 60 during 2.5h showing a solar flare system with a solar tornado.
Messier 106 (also known as NGC 4258) is a spiral galaxy in the constellation Canes Venatici. It was discovered by Pierre Méchain in 1781. M106 is at a distance of about 22 to 25 million light-years away from Earth. It is also a Seyfert II galaxy, which means that due to x-rays and unusual emission …
Here are some images taken of Mars on the 19th of March 2012 with good seeing. Images were taken at different times to show the rotation of Mars. Clearly the Tharsis volcanos and Olympus Mons can be seen and also an indication of morning haze disappearing in the late Mars morning can be seen on …
Planetoid 68 Leto passed between 14th and 17th of March 2012 through the Pleiades star cluster. This planetoid has a size of about 122 km and can be found between the orbits of Mars and Jupiter. After making some images of the Pleiades I saw that there was a planetoid moving through the field of …
The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields. It has a diameter of about 1,392,000 km, about 109 times that of Earth, and its mass (about 2×10^30 kilograms, 330,000 times that of Earth) accounts for about 99.86% …
The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields. It has a diameter of about 1,392,000 km, about 109 times that of Earth, and its mass (about 2×10^30 kilograms, 330,000 times that of Earth) accounts for about 99.86% …
This moon mosaic was made during the national star observation days. It was made using a C11 at f/10. 107 images were made using a DMK21-618. The images were stacked (Autostakkert V2) from 30s movies (1800 frames) of which the best 25% was used for stacking. Post-processing was done using astra-image and mosaicing using Imerge. …