Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1795  ·  IC 1805  ·  IC 1848  ·  IC 1871  ·  NGC 1027  ·  NGC 896
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Heart and Soul Nebula, 



    
        

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



    
        

            Stephen Migol
Heart and Soul Nebula
Powered byPixInsight

Technical card

Imaging telescopes or lenses: Pentax smc P-A* 1:4 300mm

Imaging cameras: Pentax K10D

Mounts: Losmandy G11 Gemini II

Guiding telescopes or lenses: Orion ShortTube 80mm f/5.0

Guiding cameras: Orion SSAG

Software: PixInsight  ·  Maxim DL

Filters: IDAS LPS-P2  ·  B+W 486 UV/IR block


Dates:Sept. 29, 2013

Frames: 9x1200" (3h)

Integration: 3h

Avg. Moon age: 24.23 days

Avg. Moon phase: 28.53%


Basic astrometry details

Astrometry.net job: 118866

RA center: 02h45m09s

DEC center: +61°0516

Pixel scale: 4.306 arcsec/pixel

Orientation: -179.198 degrees

Field radius: 2.789 degrees


Resolution: 3872x2600

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

Description

Heart (IC 1805) and Soul (IC184 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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Heart and Soul Nebula, 



    
        

            Stephen Migol