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, 



    
        

            Stephen Migol
Powered byPixInsight
Getting plate-solving status, please wait...
Heart and Soul Nebula, 



    
        

            Stephen Migol
Powered byPixInsight

Acquisition details

Dates:
Sept. 29, 2013
Frames:
9×1200(3h)
Integration:
3h
Avg. Moon age:
24.23 days
Avg. Moon phase:
28.53%

RA center: 02h45m10s.50

DEC center: +61°0513.7

Pixel scale: 4.307 arcsec/pixel

Orientation: 0.389 degrees

Field radius: 2.789 degrees

WCS transformation: thin plate spline

More info:Open 

Resolution: 3872x2600

File size: 9.9 MB

Locations: Menlo Park, Menlo Park, California, United States

Description

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.

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

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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Heart and Soul Nebula, 



    
        

            Stephen Migol