... Telescopes . ... Series 6000 APO Refractors . ... The StarNavigator 90 with AutoStar is a 90mm aperture, 800mm fl, f/8.8, refracting telescope that includes a DS2000 Generation II mount with #497 Autostar computerized keypad with over 30,000 object library database and automatic tracking and GOTO. The Meade 90mm StarNavigator Telescope also comes with 25mm and 9mm MA eyepieces and a Red-Dot Viewfinder, providing you with everything you'll need to have a successful night of universe watching. ...

... PropertyBasedTableModel Class Reference . This class provides a table model for just about any QObject. ... init (QList< QObject * > *content, QObject *model, QMap< int, QString > mappings) . ... data (const QModelIndex &item, int role=Qt::DisplayRole) const . ... The init method takes the data to model, as well as an instance of your model class (to use as a model for creating new instances), and a map to know the ordering of the properties to their position (as you want them displayed). ...

... the data are described accurately enough to allow an unambiguous interpretation of the data, as well as a comprehension of the context in which the data were acquired and/or processed; a single ascii file, named ReadMe , is designed for this role. the data are in a format which allows their usage by tools currently in usage in our discipline -- normally flat ascii files ; other formats can be accepted, but are converted into flat files. ... How to prepare the Data files . ... How to deposit the data...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

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... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...

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... Bad Astronomy . ... I think I will break from my usual format of Bad Astronomy/ Good Astronomy by saying that the way we define seasons currently is not strictly bad, but I feel (in my opinion!) that it could be better. The definition of when the seasons begin is at the moment of solstice or equinox; that is, winter (in the north) starts on December 22 nd and summer starts on June 22 nd . ... Now imagine breaking up the Sun's 46 degree up-and-down yearly swing into 1 day intervals. ...

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