Sh2-302, VdB 97 and NGC 2409- emission and reflection nebulae and open cluster in Puppis

  Size: 2000 px      
© Velimir Popov & Emil Ivanov 2016

This image shows an area in the northwestern part of the constellation Puppis, about 11° east of Sirius. There are three principal objects on it (see the annotated mouseover): Sh2-302, VdB 97 and NGC 2409. Sh2-302 is an emission nebula and an H II region extended for about 11 parsecs (nearly 36 light years). It is crossed by a dark band on the southeast side and is part of a molecular nebulous complex located at the outer edge of the Orion Arm, at a distance of about 1800 parsecs (about 5900 light-years). This cloud contains in its interior a molecular bipolar jet coincident with the infrared source IRAS 07299-1651, probably generated by a very massive protostar originated by the impact between the ionized region and the surrounding molecular cloud. Other star-forming phenomena are witnessed by the presence of the small open cluster NGC 2409, which size is just 0.1 parsecs, formed by twenty stars and located a short distance from the IRAS source. On the eastern edge of the nebula, a small part of the dust is illuminated by a star of the tenth magnitude, forming the reflection nebula cataloged as vdB 97.

Image details:


Center of field RA 07:32:33 (h:m:s)
Center of field DE -16:54:04 (deg:m:s)
Size 1.92 x 1.31 (deg)
Pixel scale: 2.99 (arcsec/pixel)
Orientation: Up is -75.2 degrees E of N
Charts and image details obtained from
Optic(s): ASA 12" Astrograph @ f/3.6 (Newton)
Mount: ASA DDM85 Standard
Camera: SBIG STL 11000 M
Filters: Luminance, Red, Green, Blue, Astronomik filters
Dates/Times: 25 Jan. 2017
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: R:6x10 min, G:6x10 min, B:6x10 min, Bin 2, Total Exposure Time - 180 min. (3:00 h)
More details: Dark and flat frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2013 - 2016. All Rights Reserved
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