Optics/Mount: CPC1100 with f6.3 Celestron reducer on a Milburn Wedge. Dec antibacklash set to 27/27.
Camera: QHY8
Exposure: 27 x 15 minutes
Date: May 4 and 5, 2011
Conditions: Seeing 3/5, Transparency 3/5. No wind.
Light pollution: Bortle white zone
Filter: None

Image scale at capture: 0.94 arcsec/pixel = f/6.1
Scale of presentation: Full scale, no cropping
Capture software: Sequence Generator and Nebulosity 2.
Guiding: DSI II Pro, Taurus Tracker III off axis guider. Guiding scale 1 arcsec/pixel. Connection to mount via NexRemote.
Guiding Software: PHD. Aggressiveness 100, Hysteresis 0, Minimum Move 0.6, Max RA 1000, Max Dec 450, calibration step 450. Dec set to auto/resist switching. Dithering set to Extreme with Settle < 0.5.
Guiding performance: Average FWHM 4.6 arc seconds. RMS 0.67 arc seconds, OSC 0.41. Calibration steps 8 x 14. Slight elongation in RA.
Processing: Calibrated with 50 flats and 50 bias frames. Stacked with Deep Sky Stacker, post-processed with Photoshop CS2.

Because there was slight RA trailing in this image, I used the higher quality data from May 5, 2010 (see image in this gallery) as the luminance layer, for the main galaxy only. That data was collected with a DSI II Pro, using 70 x 2 minute exposures.

The bright star at lower left is 109 Virginis. The galaxy at right bottom is the 12th magnitude barred spiral NGC 5740. To its lower right is NGC 5738, a 14th magnitude lenticular. The image contains background galaxies as faint as magnitude 19.