Rimae Secchi run along the northwestern rim of a ghost crater (lava-filled crater) of approximately 85 km diameter. The northern end of Rimae Secchi is Y-shaped, and the southern part consists of several separate troughs. Before this, during preparation to Apollo 8 and 10 flight, the rilles were informally nicknamed Apollo Rille. In 1974, the name Fossae Secchi was proposed on a map published by the US Defense Mapping Agency, but this name was not adopted (on the Moon, the term Rima is traditionally used instead of Fossa). The name of the rilles was approved by the International Astronomical Union in 1985. Rimae Secchi are named after the nearby crater Secchi which, in turn, is named after an Italian astronomer Angelo Secchi. They are approximately 40 km long and run along the shore of the mare. Rimae Secchi is a system of rilles on the Moon, in northwestern Mare Fecunditatis. A smaller ghost crater is seen inside the bigger one. This makes the book a brilliant reference book.Ghost crater with Rimae Secchi atop its northwestern rim. This is really useful to the Field of View that was achieved with a certain diameter telescope and what camera was used along with the exposure times. What makes The Cambridge Photographic Atlas of Galaxies great for me is the really fantastic full colour images and that each galaxy has information on how that image was taken. You will find galaxies from all catalogues including Messier, Abell and Holmberg. There are more than 250 galaxies featured in the book from both the northern and southern hemisphere. There is a bibliography and index at the rear of the book. Most galaxies in the book have their own page, with some having two pages where one full page displays a large full colour image.Īs well as spiral galaxies there is a section on barred spiral galaxies, elliptical galaxies, irregular galaxies, dwarf galaxies, ring galaxies, galaxy groups and clusters and finally active galaxies, quasars and gravitational lenses. Some of the galaxies have information on how the astrophotographer imaged the object as well. There is a write up about each galaxy as well as a data section which provides us with details such as the constellation, RA and Dec, Brightness, type, names of the photographers, telescope used to image it, the imaging camera name, exposure time and location where it was imaged. Each galaxy in turn is displayed in full colour with the images taken by the acclaimed amateur astrophotographer and these images are brilliant, very professional. The beginning of each section covers the classification of that type of galaxy and its morphology and astrophysics. There are over 320 pages of information.īefore we begin running through all the different galaxies there is an introduction section detailing the first galaxy catalogues and the nature of galaxies.Įach section in the book is split up into galaxy type with spiral galaxies being first. The contents section is very clear listing all the galaxies covered in the book. This is a hardcover full colour book and it starts with a beautiful inner cover (both front and back) of the galaxies displayed on a constellation map providing the name of the galaxy and its co-ordinates. So I was really pleased to see there was now an atlas of the galaxies as well. I really enjoy looking at my Cambridge Atlas of the Messier objects when imaging to see what I am looking for and what my final images should look like. The Cambridge Photographic Atlas of Galaxies by Michael Konig and Stefan Binnewies
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