Thor's Helmet -- ngc2359 -- Ha (Michael Sherick)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: HD57057 · LBN 1040 · LBN 1041 · NGC 2359 · Sh2-298

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Thor's Helmet -- ngc2359 -- Ha

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Thor's Helmet -- ngc2359 -- Ha

Revision 1-18-23b Applied selective brightness to slightly enhance "spherical" appearance of the "bubble structure". Just playing around with the data...

Revision 1-18-23a I applied some subtle "shaping" to the image contrast/detail to better show (subjective) the gas/material expansion of the complex structure of this object.

Imaged 1-17-23 from the Sagrada Observatory, Las Cruces, New Mexico
Telescope: 24" f8 RC CCD Camera: FLI-PL-09000 3nm Ha Filter Seeing conditions were in the 2.5 to 3 arc sec range.

I was fortunate to have a break in the weather last night... This is an Ha image of ngc2359, commonly called "Thor's Helmet", located in the constellation Canis Major, about 12,000 light years from Earth. ngc2359 is classified as an emission nebula.

This is somewhat of a test image for a future narrowband color version, that I hope to image in the coming week. Image data was: 25 x 600 seconds Ha unbinned. Also, I used the Spider Vane Mask to eliminate diffraction spikes, which seemed to be effective. This particular image is a bit on the sharp side, so I plan to soften the overall sharpness on the color version.

Original
B
Final
C

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Status	Advanced success
Started	...
Astrometry.net job	6981369
PixInsight job	6S22MR6N4C5GIR49QOZFQKCS8Z4WV046
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	07h18m29s.659
RA (top/left)	07h18m06s.770
RA (top/right)	07h17m42s.400
RA (bottom/right)	07h18m53s.277
RA (bottom/left)	07h19m16s.807

Dec (center)	-13°13′50″.76
Dec (top/left)	-13°02′39″.96
Dec (top/right)	-13°18′55″.91
Dec (bottom/right)	-13°25′01″.68
Dec (bottom/left)	-13°08′45″.63

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Thor's Helmet -- ngc2359 -- Ha

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Thor's Helmet -- ngc2359 -- Ha

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