By Ted Aranda
This identify is a complete set of visible descriptions of deep-sky gadgets seen from the northern hemisphere. it's a checklist of the main large and systematic visible survey of the sky ever performed nowa days. 3,000 deep-sky items are indexed with brief descriptions of the visible visual appeal within the author's strong binocular telescope. gadgets within the booklet are prepared through place for simple identity of unknown ambitions. complete indexes by means of catalog numbers and names permit searches for particular objects.
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Additional resources for 3,000 Deep-Sky Objects: An Annotated Catalogue
Stars Bright stars are of course the brightest objects in the sky beyond the planets, and these luminous gems are wonderful sights through the eyepiece. In fact, it is only visually that the intensity and simple beauty of bright stars can be appreciated: photography fails to convey these qualities adequately. ) Many bright stars are quite noticeably colored, but in most cases this means only that they have a mild tint of blue or yellow overlaying their predominantly white light. So-called blue stars do not stray far from white: they are bluish at best, not truly blue.
No involved stars. Nearby SSE is a faint star that makes a sharp triangle with two more faint stars a little ways NE. 0’ Im 170x250: Exceedingly faint. A slight diffuse glow. Elongated N-S. 2/3 of the field in size. No involved stars. W of its N end is a moderately faint star. 3 G8 A2 42x60: A close unequal pair. 170x250: A moderate distance slightly unequal pair. Color contrast: the primary is yellow; the companion is bluish by comparison. T. 2’ Sab HH: considerably bright, considerably large, irregularly round, very gradually brighter middle.
A pretty good disk. The fairly sharp edge is like a thin ring: the nebula is a little darker just inside the perimeter. Weak blinking effect. Round. Moderate size for a planetary. It’s in a short line with a faint star SW, an extremely faint star further SW, and a very very faint star NE; the planetary makes a large arc with two bright stars, one SSW and one ENE. A nice planetary with a conspicuous central star. 6’ Sb 170x250: White. 2’ 170x250: Very faint. Broadly slightly concentrated. Roughly round.