[Cristian Monea]

Un catalog structurat de obiecte cerești. Este ușor de citit și bine structurat:

"BY RA - All objects, sorted by increasing right ascension, to assist the user in indentifying those objects that are "up" and available for observation on any given night.

BY TYPE - A cross-reference of the same set of objects, but grouped by object type:
Ephemeris Stars - moderately bright stars near +40° declination, useful for stellar
initialization.
Bright Stars - Alternate stellar initialization objects in the event that an appropriate Ephemeris Star cannot be found. Also useful to demonstrate how a bright star appears telescopically.
Red and Double Stars - Interesting, and sometimes challenging, examples of single, binary, and multiple star systems, sometimes with striking color combinations.
Open Clusters - Also known as "galactic clusters", the product of relatively recent starbirth regions. Tend to be loosely organized and dominated by blue stars.
Globular Clusters - Ancient, tightly-bound star systems which tend to group around the nucleus of the Milky Way. Contain thousands of component stars.
Planetary Nebulae - The "puffed-off" outer shells of a dying, Sun-like star. Named by Hershel, for their (sometimes) telescopic resemblance to Uranus, which he discovered.
Diffuse Nebula - Glowing gas clouds, primarily due to hydrogen-alpha emission. Starbirth occurs in these regions, ultimately resulting in a new open cluster.
Cataclysmic - Exotic, explosive, highly-energetic sources.
Galaxies - "Island universes" of stars lying outside our own Milky Way Galaxy.
MESSIER - A separate listing of this venerable and historical catalog.
M&M - A separate listing of Mullaney and McCall's catalog of celestial showpieces."

Și în plus, catalogul Herschel și Messier (în format Excel).

[marius78]

Frumuoasa postare .Datele astea sunt valabile tot timpul?

[marius78]

Ne putem ghida dupa ele ,tot timpu anului ?.Sau se mai schimba ceva din cand in cand .Ma gendesc sa le descarc in calc ,pote imi sunt utile .

[Cristian Monea]

Sincer nu știu dacă sunt valabile tot timpul anului, dar am văzut, de exemplu, că la nebuloase există o separare în funcție de anotimp, la fel și la catalogul Messier în format Excel.

[marius78]

Ar fi interesant ,daca ai posta un tabel si cu modificarile .Cred ca exista pe undeva .

[Cristian Monea]

Din nefericire, nu îmi mai amintesc de pe ce site am descărcat catalogul, că poate mai găseam acolo alte informații.

[octopus]

Parca si asta ar fi bun:
http://www.messier.obspm.fr/xtra/12months/12months.html