Antares Region
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Scope: ST80 f/2.5 Location: Laguna Mountains CA;   12 June 2004;  Camera: ToUcam SC3

Exposure: 6 x 60 sec and 12 x 32 sec Luminance exposures with BaaderIR Block Filter; 10 x 40 sec RGB - 4 frame mosaic

Processing: All exposures captured and in K3CCDTools. Alignment and stacking was done with Registax and saved as FITs. Each exposure set after stacking was co-registered in Astroart; some low pass filtering was applied. Each of 4 frames were separately LRGB combined  in Photoshop using Luminance Layering (or LLRGB).
Shorter Luminance exposures were normal combined with masks of saturated areas to desaturate and sharpen the  Luminance channel. Frames were re-sampled to 800 x 600 for the mosaic process. Four frames were color balanced and arranged in mosaic in Photoshop. SGBNR was used lightly to smooth background of the final mosaic.

This mosaic image was a challenging effort. The exposures themselves were guided due to the longer exposures. The range of brightness form the bright Antares to the very dim surrounding nebula and the IC4605 reflection nebula posed quit a challenge.  I actually did the image processing twice in an attempt to get the best result which is presented here. Other images on this page provide more detailed views of some of the objects. Horizontal FOV is about 160'.

 

        M4 in Scorpius

Scope: C8 f/5; Location: Del Mar, CA; 10 June 2004; Camera: ToUcam SC3

Exposure: 12 x 40 sec and 16 x 12 sec Luminance exposures with IR Block Filter and Orion Skyglo filter;  13 x 15 sec RGB  exposures.

Processing: Images were captured in K3CCDTools. Aligned/stacked in Registax and saved as FITS. Luminance and Color channels were scaled and rough color balanced in Astroart. Channels were co-registered in Astroart.  Shorter Luminance exposure was normal combined with core mask to desaturate and sharpen the core in the Luminance channel. Luminance and Color FITS were combined in Photoshop with Luminance Layering. Color balancing and final touches in Photoshop. SGBNR was used to smooth background noise on the luminance channel and the final result. Resized to approximately 800x600.

This image was a guided image. Image was taken under fairly heavy light pollution. However, the object was sufficiently bright and the colors came out well. I have not imaged this cluster prior to this image. Horizontal FOV is about 16'.

 

        NGC6144 in Scorpius

Scope: C8 f/5; Location: Dos Picos Park, Ramona, CA; 21 June 2004; Camera: ToUcam SC3

Exposure: 12 x 60 sec  Luminance exposure with IR Block Filter;  12 x 50 sec RGB  exposures.

Processing: Images were captured in K3CCDTools. Aligned/stacked in Registax and saved as FITS. Luminance and Color channels were scaled and rough color balanced in Astroart. Channels were co-registered in Astroart.   Luminance and Color FITS were combined in Photoshop with Luminance Layering. Color balancing and final touches in Photoshop. SGBNR was used to smooth background noise on the luminance channel and the final result. Resized to approximately 800x600.

This image was a guided image. Image was taken under reduced light pollution. I have not imaged this cluster prior to this image. Horizontal FOV is about 16'.

 

        IC4605 Reflection Nebula

Scope: C8 f/2.8; Location: Dos Picos Park, Ramona, CA; 5 June 2004; Camera: ToUcam SC3

Exposure: 12 x 60 sec Luminance exposure with IR Block Filter and Orion Skyglo filter;  12 x 50 sec RGB  exposures.

Processing: Images were captured in K3CCDTools. Aligned/stacked in Registax and saved as FITS. Luminance and Color channels were scaled and rough color balanced in Astroart. Channels were co-registered in Astroart. Luminance was enhanced with the data from the Antares mosaic (mostly by normal combine with a properly selected mask for the nebula areas). Luminance and Color FITS were combined in Photoshop with Luminance Layering. Color balancing and final touches in Photoshop. SGBNR was used to smooth background noise on the luminance channel and the final result. Resized to approximately 800x600.

This image was a guided image. Image was taken under reduced light pollution. However, for some reason I used a LPR filter (Orion Skyglo). The nebula region was not well represented in the data and stretching the data yielded  poor, noisy, and distorted results. I salvaged the image with some of the data from the Antares mosaic.  Horizontal FOV is about 30'.

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All images and content remain the property of Jim Thommes - copyright 2003, 2007

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