NGC2244 Rosette Nebula in [SII], Ha and [OIII] Light

RGB = [SII], Ha, [OIII]

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RGB = Ha, [OIII], [SII]

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Halpha only

 

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Taken on October 24-26, 2003 in my backyard in Castro Valley, Ca.

Astro-Physics Traveler f/6 with Astro-Physics 0.75X Telecompressor (F=457.5mm total, f/4.5)

SBIG ST10XME Imaging Camera at -22deg C.

Astro-Physics 800mm guidescope (F=900mm)

SBIG ST7E guider camera

Astro-Physics AP1200GTO mount

Finger Lakes Instrumentation DF2 Digital Focuser

Finger Lakes Instrumentation CFW1 Filter Wheel

3 exposures of 20 minutes through Ha and [SII] filters at two sites for 2 x 1 mosaic

2 exposures of 30 minutes through [OIII] filter at two sites for 2 x 1 mosaic

1 exposure of 20 minutes through [OIII] filter at two sites for 2 x 1 mosaic

Custom Scientific Narrowband Emission Line Filters

   [Sulfur II]                     672.4nm  3nm FWHM

   Hydrogen alpha        656.3nm  3nm FWHM

   [Oxygen III]                 500.7nm  3nm FWHM

Total exposure = six hours 40 minutes

Maxim 3.20 used for image capture, calibration, ddp, alignment, format conversion and color combining

Sigma pre-beta 11 used for darks, biases, flats

AIP4WIN used for deconvolution

Photoshop 7 used for mosaic tiling and final adjustments

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