Sh2-115-HOO-rgb<\/span> <\/span><\/p><\/h2><\/span> Commentaires sur l’objet photographi\u00e9<\/span><\/p><\/h1><\/span> Explanation: <\/b> Sharpless<\/a> 115 stands just north and west of Deneb, the alpha star of Cygnus the Swan in planet Earth’s skies<\/a>. Noted in the 1959 catalog<\/a> by astronomer Stewart Sharpless (as Sh2-115) the faint but lovely emission nebula lies along the edge of one of the outer Milky Way’s giant molecular clouds, about 7,500 light-years away. Shining with the light of ionized atoms<\/a> of hydrogen, sulfur, and oxygen in this Hubble palette color composite image, the nebular glow is powered by hot stars in star cluster Berkeley 90. The cluster stars are likely only 100 million years old or so and are still embedded in<\/a> Sharpless 115. But the stars’ strong winds and radiation have cleared away<\/a> much of their dusty, natal cloud. At the emission nebula’s estimated distance, this cosmic close-up<\/a> spans just under 100 light-years.<\/p>\n<\/div> Donn\u00e9es techniques Object : Sh2-115![](\"http:\/\/outters.fr\/wp-content\/uploads\/2019\/09\/Sh2-115-HOO-rgb.jpg\")
<\/a><\/span><\/div><\/div><\/div>Image HOO-RGB<\/h2><\/a><\/div><\/div><\/div>
Image Ha<\/h2><\/a><\/div><\/div><\/div>
<\/p>\n
\n<\/span><\/p><\/h2><\/span>Donn\u00e9es techniques de prise de vue<\/h2><\/div>
\nResolution ………….. 0.647 arcsec\/px
\nRotation ……………. 86.652 deg
\nObservation date …….. 2019-08-03 02:27:37
\nGeodetic coordinates …. 5 29 13 E 44 00 00 N
\nFocal distance ………. 2870.70 mm
\nPixel size ………….. 9.00 um
\nField of view ……….. 44′ 8.7″ x 44′ 8.7″
\nImage center ………… RA: 20 34 29.697 Dec: +46 51 55.45
\nDate images Du 20 juillet\u00a0 au 24 aout 2019
\nOptics : Rcos 12.5″
\nMount : Paramount ME Num\u00e9ro 3
\nLocation : Sirene observatory
\nSeeing : fwhm :\u00a0 1.32 \u00e0 2.46 arc sec \/pixel
\nCcd : Apogee 16U
\nfilter wheel : Apogee
\nfilters : Astrodon
\nHa rvb
\nFocuser :TIM
\nGuiding : Atik 314L+
\nTemp. out : T\u00b0
\nTemp ccd : -25\u00b0
\nTotal exposure : 35 h
\ntout en binning 1×1
\nOIII : 49\u00a0 x\u00a0 20′
\nHa : 36 x 20 ‘
\nRouge 30 x 5′ \/ vert 30 x 5′ \/ bleu 30 x 5’<\/p>\n<\/div><\/div><\/div>Donn\u00e9es scientifiques<\/h2><\/div><\/div><\/div>