Virgo Galaxy Cluster, Markarian's Chainm M84-86 and others

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This is the central part of the Virgo Galaxy Cluster and the two main galaxies at right are M84 (right) and 86 (left). They form part of an asterism, "the face": they are the eyes, while the two galaxies below are the nose  (NGC 4387) and mouth; (NGC 4388) above the left eye another galaxy is the eyebrow (NGC 4402). Than at left of the asterism the Markarian's Chain start with the pair NGC 4438-4435, another pair NGC 4461-4458 and at top-left NGC 4473.
Technical Data
Optics Newton 200 mm (homemade by L. Comolli, F. Riccio and P. Battaglia)
Focal Lenght 1260 mm
Focal Ratio f/6
Corrector Baader MPCC
Exposure Time 2h (single exp of 10 min)
CCD Canon EOS 5D with baader filter
Sensitivity 800 ISO
Location Bogli (PC, Italian Appennines) at 1350 m height
Date
 2 April 2011
Mount Gemini G-41
Tracking Lodestar on an 80 mm f/5 refractor
Temperature and humidity T= +5°C, RH=45%
Sky brightness at zenith (with SQM-L) 21.6 mag/arcsec^2
Notes North at top.

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