M11 in Scutum
with 10" f/3.9 Astrograph and WO MiniCat 51
Uploaded 8/31/25

 

            
This pair of images
            is a demonstration of dual "Context Imaging". Here,
            we piggyback on the main instrument (my 10 inch) another wide
            field instrument (Mincat 51) to obtain simultaneous dual shots
            of the same target, one with a 1.5 degree field and one that
            is 5x larger to record the surrounding field and put the primary
            target into context. Although the 10 inch shot shows a high resolution
            close up of the cluster and surrounding dust clouds, the MiniCat
            shot reveals a host of addional targets for future imaging and
            study in its wide razor sharp field. (Note: Adding a Baader UV/IR
            blocker = sharp MiniCat). Clearly, there are several other interesting
            subjects to image on another night in this wide field.

            
Technical Data: 10"
            f/3.9 Newtonian astrograph, Atik 16200 CCD, RGB = 1 hours total,
            Payson, Az.

            
With 10 inch f/3.9 Newt

Select an image size for a larger view:

1600 x 1290




            
With MiniCat 51 Petzval

Select an image size for a larger view:

1600 x 1290


Instrument:  10" f/3.9 Orion Astrograph Newtonian with Baader MPCC
Mount:  Astrophysics 1200 QMD
CCD Camera:  ATIK 16200 
Guider: ASI290  w/80mm WO Zenithstar 81 piggyback refractor
Exposure:  1 hours RGB
Astronomik  RGB Combine Ratio:  1: 1.05: 1.5
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 3 arcsec , Transparency 9/10
Outside Temperature:  75 F
CCD Temperature:  -20 C
Image Processing Tools: 
Maxim DL6:  Calibration, PixInsight:  All Remaining processing, Photoshop CS2: Production finishing 

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