Heart and Soul Nebula (Stephen Migol)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD15069 · HD15238 · HD15239 · HD15250 · HD15382 · HD15522 · HD15557 · HD15558 · HD15570 · HD15629 · HD15640 · HD15665 · HD15785 · HD15851 · HD15862 · HD16038 · HD16088 · HD16183 · HD16218 · HD16349 · HD16410 · HD16429 · HD16506 · HD16507 · HD16626 · HD16778 · HD16799 · HD16894 · HD17086 · HD17305 · And 91 more.

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Heart and Soul Nebula

Link: http://www.flickr.com/photos/smigol/10015256316/lightbox/

Powered byPixInsight

Heart and Soul Nebula

Link: http://www.flickr.com/photos/smigol/10015256316/lightbox/

Heart (IC 1805) and Soul (IC1848) nebula as seen from the backyard. Taken with the modified Pentax K10D using the smc P-A* 1:4 300mm lens. I had some challenges during the sessions with flexure and so I was finally able to get most of the flexure under control by adding a ring attached to a ball mount. There's still some movement so I'd like to revisit this challenge eventually. May consider making something out of wood.

This image is the result of a collection of 9 subexposures all 1200 second long. Lens was set to F5.6, f6.7, and f8 respectively to try to control fringe and off axis coma. Also used a stack of the IDAS LPS P2 filter with the B+W 486 filter to control out of focus NIR leaking through the filter.

Total integration was a low 3 hours.

Guided atop a Losmandy G11 with ST80 guidescope and SSAG.

Calibrated in Maxim with flats for each Fstop.

Stacked in DSS, processed in PixInsight to stretch and remove some noise.

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Referentiation Matrix (Gnomonic projection = Matrix * Coords[x,y]):

-0.00119583 -8.21417e-006 +2.3258

+8.01721e-006 -0.00119611 +1.53944

+0 +0 +1

Projection origin.. [1935.998548 1300.008048]pix -> [RA:+02 45 10.36 Dec:+61 05 20.78]

Resolution ........ 4.306 arcsec/pix

Rotation .......... 0.382 deg

Focal ............. 289.83 mm

Pixel size ........ 6.05 um

Field of view ..... 4d 37' 51.3" x 3d 6' 34.6"

Image center ...... RA: 02 45 10.358 Dec: +61 05 20.82

Image bounds:

top-left ....... RA: 03 05 20.870 Dec: +62 32 14.32

top-right ...... RA: 02 25 09.673 Dec: +62 34 11.54

bottom-left .... RA: 03 03 17.995 Dec: +59 26 25.98

bottom-right ... RA: 02 26 51.662 Dec: +59 28 12.04

========================================================

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
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Status	Advanced success
Started	...
Astrometry.net job	6652934
PixInsight job	LZODK97SOT44F0BWLJM5XDYU2P84H60U
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h45m10s.49
RA (top/left)	03h05m18s.32
RA (top/right)	02h25m10s.94
RA (bottom/right)	02h26m52s.57
RA (bottom/left)	03h03m15s.81

Dec (center)	+61°05′14″.5
Dec (top/left)	+62°31′55″.10
Dec (top/right)	+62°33′59″.3
Dec (bottom/right)	+59°28′18″.3
Dec (bottom/left)	+59°26′35″.9

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Heart and Soul Nebula

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