NGC 6726

        
                                      Labelled

About this image.

The two blue reflection nebulae (NGC 6726/6727 & IC 4812) dominates the

scene whilst the dark nebula Bernes 157 provides a complimentary and

contrasting thick layer of dust, harbouring star forming regions (though mostly

obscured).  Consequently, this area is about as dark and star poor as you can

get.  NGC 6726/6727 and IC 4812, estimated to lie around 420 light-years

distant, are associated with hot, young stars, typically B2 or hotter.  Dust in the

cloud scatters light from the stars so that it appears blueish to an observer. 

The double star BRS 014 (magnitudes 6.6 and 6.8 and separated by 12.7 arc-

seconds), are responsible for the reflection occurring in IC 4812. 

     3537x2328
       (1.5Mb)

     5291x3492
        (3Mb)                              

Equipment

Telescope:                 12.5" Ritchey Chretien by RC Optical Systems
Mount:                      Paramount ME by Software Bisque
Instrument:               STL11000M CCD Camera by SBIG with AO-L

Exposure:                  This is a 4 frame high-resolution LRGB mosaic with a central patch frame.  LRGB
                                centre was unbinned, and the 4 quadrants consisted of binned colour (2x2) and
                               unbinned Luminance.

Exposure Time:          Central frame - 240:140:140:140

                               Quadrants: - 210:70:70:70
Total Exposure:          Luminance: 18 hours RGB: 21 hours.
Capture Software:       CCDSOFT V5
Processing:                Maxim DL/CCD, Photoshop CS2, CCDAutopilot, CCDStack

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