NGC6826 Blinking Planetary aka Caldwell 14 - 20210512 EdgeHD8 SL3 12x15s 6400iso lenr Sequator GIMP

Описание: When observers look directly at Caldwell 15 through a small telescope, they typically see only the nebula’s sparkling-white central star. However, by averting one’s gaze, glancing away from the central star, the nebula's bulbous dust clouds come into view. This optical trickery earned this planetary nebula the name the "Blinking Planetary.” The Blinking Planetary’s bright, white remnant star — known as a white dwarf — is surrounded by a greenish orb of gas and dust, the outer layers of the burned-out star that jettisoned into space. This cloud is flanked on both sides by bursts of red gas called FLIERS, or fast low-ionization emission regions. In these relatively young features, electrically charged atoms shoot off into space at supersonic speeds.

Caldwell 15 was discovered by British astronomer William Herschel in 1793. With a magnitude of 8.8, the nebula is found in the constellation Cygnus, and it is best observed during warm summer nights in the Northern Hemisphere. It will appear low in the northern sky for Southern Hemisphere observers during the winter. Also known as NGC 6826, Caldwell 15 is about 2,200 light-years away from Earth. Young and small, the planetary nebula is only about a thousand years old and less than half a light-year across. Credit: NASA.gov.

The Rooster Inn Observatory resides in Bortle 4 country in Upstate New York, and provides LIVE video streaming of astrophotography of sun and moon, stars and planets, galaxies and nebulae, comets and satellites. Four telescopes make up the observatory:
(1) Celstron Edge HD 8-inch on a CGEM II mount with a Canon EOS Rebel SL3 for planetary observation,
(2) Vaonis Stellina all-in-one observation station,
(3) Lunt LS50T H-alpha B400 solar Telescope on a Celestron 8SE mount, and
(4) Canon EOS 50D with a stock 55-250mm telephoto zoom lens on the same Celestron 8SE alt-az mount for point and shoot lazy imaging.
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