M92 is the forgotten pearl of Hercules. Explore the history of this 14-billion-year-old cluster, learn how to find it, and how to photograph it without burning its dense core.
Markarian’s Chain is a dynamic system of galaxies bound by common motion. See the analysis of cropped image sections: from the giant elliptical M84/M86 to the interaction-deformed “Eyes.”.
M13 is the brightest globular cluster in the northern hemisphere. This article discusses its extreme density, the elusive “Propeller” (Y-shape) feature, and the fact that we sent our radio calling card there in 1974.
17 Cygnus – Analysis of the 17 Cygnus double star system in the constellation Cygnus. View the crops to see how to resolve close stars and why a 26″ separation is an excellent test for your telescope’s optics.
Altair – Meet Altair, one of the fastest and closest stars to Earth. Learn how its rotation speed of 240 km/s flattens it into an oblate shape and how to spot it tonight.
All content on this site is subject to legal protection under the provisions of the Act of February 4, 1994 on Copyright and Related Rights (consolidated text of 2006, gov. Journal of Laws No. 90, item 631, as amended). ). Without the author’s consent, it is forbidden, among others content reproduction, copying, reprinting, storage and processing by any electronic means, in whole or in part.
Further dissemination referred to in art. 25 paragraph 1 point b of the Act of 4 February 1994 on copyright and related rights. Copying, processing, distributing these materials in whole or in part without the author’s consent is prohibited.