12 pannels mosaic of Butterfly and Crescent nebulae (David Lindemann)

12 pannels mosaic of Butterfly and Crescent nebulae

Hybrid Bicolor and narrowband palette - LRGB composition (H-a:R+SII:Ha:B+OIII)

Data courtesy: POSS-II Survey (http://www.astro.caltech.edu/~wws/poss2.html) (30 panels of 60x60 arc/min for Red and Blue data used for Chrominance)

Captured 13/04/2014, 16/04/2014, 17/04/2014, 04/05/2014, 18/05/2014, 30/05/2014, 31/05/2014, 1/06/2014, 5/06/2014, 6/06/2014, 7/06/2014, and 8/06/2014 with Takahashi FSQ106ED @f/5 530 mm focal length with Apogee Alta U8300 monochrome and Astrodon H-alpha 5 nanometers

Panel 1 - 12 x 20m unbinned = 4h

Panel 2 - 15 x 20m unbinned = 5h

Panel 3 - 14 x 20m unbinned = 4h40

Panel 4 - 15 x 20m unbinned = 5h

Panel 5 - 15 x 20m unbinned = 5h

Panel 6 - 15 x 20m unbinned = 5h

Panel 7 - 16 x 20m unbinned = 5h20

Panel 8 - 15 x 20m unbinned = 5h

Panel 9 - 15 x 20m unbinned = 5h

Panel 10 - 16 x 20m unbinned = 5h20

Panel 11 - 15 x 20m unbinned = 5h

Panel 12 - 17 x 20m unbinned = 5h40

OIII and SII data captured with Takahashi FS60CB @f/4.25 255 mm focal length with Apogee Alta U8300 monochrome ans Astrodon OIII and SII filters 5 nanometers

OIII Panel 1 - 4 x 40m binning 2x2 = 2h40

OIII Panel 2 - 4 x 40m binning 2x2 = 2h40

OIII Panel 3 - 4 x 40m binning 2x2 = 2h40

OIII Panel 4 - 4 x 40m binning 2x2 = 2h40

SII Panel 1 - 4 x 40m binning 2x2 = 2h40

SII Panel 2 - 4 x 40m binning 2x2 = 2h40

SII Panel 3 - 4 x 40m binning 2x2 = 2h40

SII Panel 4 - 4 x 40m binning 2x2 = 2h40

Total exposure time = 81h20m

Software: MaximDL to capture - CCDStack to calibrate, register, normalize, data reject and combine - Straton for stars removal - Photoshop CS5 and PixInsight for color combine and non-linear streching.

Original
Final
B

	Distinct awarded users	Total awarded images
Image of the day
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	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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Status	Basic failed
Started	...
Astrometry.net job	302766
PixInsight job	n/a
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