... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

... 125, 1997 Gareth Hunt and H. E. Payne, eds. A Filtering KPNO L TEX Observing Proposals with Perl David J. Bell National Optical Astronomy Observatories, Tucson, AZ 85726-6732 Abstract. ... Observer A and prop osal information fields in these files are well-marked with L TEX tags, thus allowing automated extraction and imp ortation to observatory databases. ... L TEX Date Fields and Filter Output. ... Conclusion A A Perl script has b een develop ed for filtering KPNO L TEX observing prop osals. ...

XMM-Newton OM Response Files Page . ... Data Analysis SAS News What is SAS? ... The response files have the name om_effarea_<filter>_v2.0.rsp. The response files should be used in conjunction with a spectral data file containing the filter count rate. Such a data file may be created by editing the template filter file om_filter_default.pi with a fits editor such as 'fv' and changing the "RATE" and "STAT_ERR" entries in the SPECTRUM extension to the filter count rate and error. ...

. Filter wheels currently only hold 2 inch (50mm) square filters . The database is of all shared Apache Point Observatory Filters. Requests for filter