SHARPLESS 2 301

EMISSION NEBULA IN CANIS MAYOR

(Image centered at ra: 07:10.44 / dec -18:31)

January 2021 - Home Backyard in Martínez, Buenos Aires, Argentina

DATA

TYPE: Bright Nebula

APPARENT MAGNITUDE: n/a

APPARENT DIAMETER: 8 x 9 arc minutes

DISTANCE:42000 light years 

IMAGE INFORMATION

SCOPE: ORION OPTICS UK 8" f5 Newtonian w/Antares Optics 2,6" Secondary & Televue Paracorr working at f5,75

CAMERA: QSI 583 WS at - 10%

MOUNT: SKY WATCHER NEQ6

FILTERS: Baader LHaRGB Set

SKY CONDITIONS: Urban Skies - Bortle 8.

EXPOSURES: HaRGB (60,60,60,60) 

OBJECT DESCRIPTION AND IMAGE SESSION

Located 6 degrees south east from Sirius in the constellation of Canis Mayor. Unlike many of the Sharpless objects, which can cover swaths of sky larger than the fields of many telescopes, Sh2-301 measures just 9'x8' across. From dark-sky sites, Sh2-301 reveals an unusual shape that is best described as an irregular, three-lobed fog with thin lanes of dark nebulosity threaded throughout.  Several stars appear superimposed on the nebula.  The brightest is a 10th-magnitude point found toward the cloud's southeastern edge.  Another tuft of brighter nebulosity appears to surround a triangle of 12th-magnitude stars at the northern border.  These stars make a handy gauge for judging the full extent of the nebula.

A typical warm summer night. The Ha channel was used only for the dim outside structure of the nebula. The central bright structure was processed in RGB.