Another Sharpless2 object that is seen in the context of the surrounding H-alpha, O-II and S-II clouds thanks to the stretching optimized with GHS. Each color stretched separately in GHS.
GHS Forum DiscussionBasic combination done with Alex Woronow's NB Assistant.
RGB Stars-to-Narrowband Transfer using PixelMath - V11 by Bill Blanshan.
Prior version with Tak 180 ED but without O-III or S-II:
Sh2 240 H-alpha RGB (Les Dentelles the Lacework) From GalaxyMap:This is the SNR Shajn 147 (Sim 147). [[url=
http://galaxymap.org/cat/view/sharpless/240#note_1]1]
Analysis of the pulsar PSR J0538+2817 within Sim 147 suggests an age for the supernova remnant of about 30 thousand years. [[url=
http://galaxymap.org/cat/view/sharpless/240#note_2]2] 1.
^ Blitz, L., Fich, M., & Stark, A. A. (1982). "Catalog of CO radial velocities toward galactic H II regions", The Astrophysical Journal Supplement Series, Vol. 49, 183-206. [[url=
http://adsabs.harvard.edu/abs/1982ApJS...49..183B]1982ApJS...49..183B] 2.
^ Kramer, M., Lyne, A. G., Hobbs, G., et al. (2003). "The Proper Motion, Age, and Initial Spin Period of PSR J0538+2817 in S147", The Astrophysical Journal, Vol. 593, L31-L34. [[url=
http://adsabs.harvard.edu/abs/2003ApJ...593L..31K]2003ApJ...593L..31K]
GENERAL NOTE ON SHARPLESS2 OBJECTS>>>>>>>>>>>>>There are 313 Sh2 objects. All now imaged.
This is my collection:
Sharpless2Wide-Angle Hydrogen Alpha Nikon Image Sh2 79-171Please note there is also a Sharpless2 Group with now more than 2700 examples.
Sharpless2 GroupOther useful links include:
Gary Imm's CollectionGalaxyMap's CollectionThe Sharpless CatalogThe MDW H-alpha Sky SurveyReiner Vogel's detailed observing catalogHope you enjoy these obscure but interesting objects...
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