Our second setup is a Riccardi-Honders optical design with a diameter of  200 mm and a focal length 600mm which offers a fully corrected field for our 4040 BSI sensor.

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The mount is a GEM :  Paramount MX+ with a max payload of 100 lbs.

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Imaging train consists of :

-a 3 inches digital focuser ATLAS from FLI (ASCOM)

-a FLI Centerline 10 filters filter wheel (ASCOM)

-a full set of Baader filters LRGB HOS

-a new SBIG AC4040 BSI Class 1

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The Eagle 4 pro from PrimaLuce is running all the different accessories together, including a QHY autoguider and electrical dew heaters.

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This astrograph has a fast focal ratio of 3.0 and is intended for wide-field imaging, it will be used in conjunction with our 750mm F2.8 to take data of faint extensions around the focus target.

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The photographic field is 3.52 by 3.52 degrees:

Area: 12.39 square degrees.

Resolution 3.09"/pixel.

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Below a full field is shown as it is seen with the HORUS astrograph.

Exposure : 16 Hours in LRGB

5.5 hours in Ha.

Image are very sharp till the edge of the sensor.

Data and processing by Phillip Esce

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(Image was reversed upside down for our northern hemisphere colleagues!)