By Jess K. Gilmour
The useful Astronomer's Deep-sky Companion is a necessary merchandise of kit for deep-sky observers, whether or not they have an interest in imaging or simply sightseeing. This large-format full-colour ebook is designed to be taken out into the sector in the course of gazing to supply crucial specific, centred info for locating and imaging attention-grabbing deep-sky items. Organised via constellation, each one unfold gains the main attention-grabbing items, with photographs, details, place, locator maps, steered publicity occasions for telescopes of assorted apertures, and lots more and plenty extra!
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Additional info for The Practical Astronomer's Deep-sky Companion
G. in extended emission regions. The database will offer a unique possibility to access the major results of all ROSAT pointings in an easy way. The best way to access the database will be through the 'browse' utility (EXOSAT Database or HEASARC system), installed at GSFC, MPE and at Leicester. It provides an astronomer-friendly environment to retrieve and select X-ray and other astronomical data. Included are utilities to compare and, to some extent even analyze retrieved data. The community will be notified as soon as the Result Archive will become available.
The short-wavelength prime (SWP) and the long-wavelength prime and redundant (LWP /LWR) cameras. A- 1 ) and wavelength (A) together with the standard IUESIPS data quality flags. To optimize access and to minimize data handling, ULDA is distributed with its support software package (USSP) worldwide to about 25 national hosts serving some 900 scientists in 35 countries. At a time, where networking was starting, ULDA/USSP offered a pioneering concept in data distribution: any scientist can help himself interactively to search for, to select and to downlink IUE low dispersion spectra to his own computer.
The 2E catalog cdroms contain primary arrays of smoothed IPC fields that have been corrected for background and vignetting. The HRI versions are primary FITS arrays of photons. The more recent additions for both the IPC and HRI give the complete data in the form of binary extension tables of photons; hence these are suitable for spectral and temporal analyses. As of April 1, 1994, there are five sets, listed in Table 4-1. 4 COMMUNICATION This section of the EOLS features a bulletin board with news on ROSAT, other missions, and updates to Einstein material.