M53, M3, and NGC 4631 on May 03, 2006
![](javascript:ImageWindow("http://www.alpheratz.net/images/observing/M53_2006-05-03.jpg",725,751,"external"))
M53 (NGC 5024). Total integration time 122×15.0 sec = 30.5 min. M53 is 17.8 kpc from the Sun. The V magnitude of the horizontal branch is 16.8. This is the inaugural image of my new Meade DSI Pro II CCD camera.
![](javascript:ImageWindow("http://www.alpheratz.net/images/observing/M3_2006-05-03.jpg",722,748,"external"))
M3 (NGC 5272). Total integration time 149×11.3 sec = 28 min. The box shows the extent of the image of M3 shown in the May 6 observing session. M3 is 10.4 kpc from the Sun. The V magnitude of the horizontal branch is 15.7.
![](javascript:ImageWindow("http://www.alpheratz.net/images/observing/NGC4631_2006-05-03.jpg",667,711,"external"))
NGC 4631. Total integration time 243×15.0 sec = 61 min.
2006 May 04 16:48 |
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