Monday night Ralf Kotulla (UW Milwaukee) took a first demonstration picture of M33 in H alpha, which nicely complements last run's U band image taken of the same galaxy. In the picture below we show only the unvignetted 2x2 detectors array. The total field coverage is slightly larger, though. The exposure time of the single image was 450 seconds, but we observed the frame as part of a larger dither pattern. I cannot wait to get a full color image of M33.
|M 33 – 450 sec in H alpha|