If you fill the " Center label on formation", the label will masks more the formation, but will be placed juste above it. Or reduce size of the libration arrow and of the point showing the selected formation. The " Mark size" cursor allows you to magnify You will notice soon that the arrow size is You, where the libration will be maximum for the date and hour that you If you fill the " Mark the point of the maximum libration",Ī well visible arrow will be displayed around the lunar disk to show Or unfill the " Show label" and/or " Show marks" boxes. You can also decide if you want to display them if you fill The phase" and/or " Show the libration" boxes if you wish it.Ĭolor to the point showing the formation on the map, the name of the selectedįormation and the color of the name of the neighbourhood or principalįormations. In the " User database loaded from DATLUN" frame, your own databases will be displayed after you tranfered theme in the VMA using the DATLUN module. So, this will slow down considerably the maps display performance. When selecting the " Salamuniccar" and " Robbins"ĭatabases, this number can go up to more than 1 million ! You have just to fill the cases corresponding to the databases that you wish to display on the map at the same time.Īttention : The more you selected databases, a more bigger number of formations must be managed by the module. In the other languages available, versions produced by others volontary colleagues, It's the language of the softwareĪnd of the database and French and English are provided in the basic package. Type your observation site coordinates, so that, librations could be computed.įille the case " Use computer date and time". The " Settings panel" is managed in the ATLUN module.Īfter launching the ATLUN module, click on the " Configuration" Inside and better will be the resolution and shorter the computing time. The speeder the microprocessor, the more graphic memory Owners of the most powerful computers will access all the functions in Of people despite of the machine resources needed. The authors have wished this software to be usable by the greatest number To well set the "Virtual Atlas of the Moon"Ī good setting of the "Virtual Atlas of the Moon" is necessary To study a specific type of lunar formations To generate documents usable "in the field" To look at a formation in its geological context How to search a formation of the libration To study a known formation and know how and when to observe it To find an unknown lunar formation that you just discover the existence To view the Moon for a given date and hour to prepare an observing session To well set the "Virtual Atlas of the moon" The versions compatible with the described actions are indicated: The following examples will help you to well use the "VirtualĪtlas of the Moon" and give you all informations needed for good Description A popular free program for displaying lunar features on an interactive globe, developed by Christian Legrand and Patrick Chevalley.Virtual Atlas of the Moon / Quick user's guide With the release of Version 4.0/3.5c in May 2008, VMA moved to new website.The most recent release of "VMA Pro 5" includes versions that work in the Linux and Mac operating systems.Also known (in the English-speaking world) as "VMA", and (in French) as "AVL" ( Atlas Virtuel de la Lune). The old website (of many years standing) may continue to describe some of the earlier releases. VMA shows a simulated view of Moon for any selected date, time and observing location (on Earth).The actual program files to be downloaded are stored on the SourceForge website. Can also show views centered on the longitude of any selected feature name. Clicking on the simulation indentifies the neareast named feature.Cannot generate overhead views of feaures off the Moon's equator. Includes observing notes (and more) for each. Most include and can display (in a separate window) selected images of the features (in addition to the global texture files used for creating the maps), provided the search term is encoded in the image file name. The scale and orientation of the supplementary images is not indicated. The feature information display is driven by the included DATALUN database, which users can add to.Users with advanced graphics cards have the option to display a variety of overlays on the basic textures for example, indicating the locations of major geologic formations.Users can add to the image database, again provided the feature name is properly encoded in the filename.
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