NGC4725

[petevasey]

3 clear nights in a row - what's going on? Alas the Moon was starting to wax but 22nd April was clear and steady, so I visited the barred spiral galaxy NGC 4725 in Coma Berenices. This bright (magnitude 9.3) galaxy is particularly unusual in having only one spiral arm which ends up in a cloudy halo. The smaller neighbouring galaxy is NGC 4712, and is unrelated, being much further away.

QSI 683 on RC10 at f8. Luminance 10 x 10 minutes, RGB each 4 x 10 minutes, all binned 2x2. Off-axis guided with Lodestar X2 and Starlight Xpress AO unit. North approximately up in this orientation, governed by the requirement for a suitable guide star. Full size at

http://www.madpc.co.uk/~peterv/astroplover/QSIpics/Large/NGC4725.jpg

[PNJ]

lovely image Peter,   i do like the colours,  be interesting to see if there is some Ha regions in the Arms too, maybe you might get a chance to try Ha

paul J

[petevasey]

Thanks, Paul,

Yes, maybe a bit of H-a.  But the weather ain't too kind at the moment, the Moon is getting brighter and it's going to be perpetual twilight until August.  Still, worth a try - the magic of narrowband might do the trick ;-)

Cheers,

Peter. 

[Sarah and Colins Astro]

Brilliant image, such great detail, thanks for sharing :-)

[SteveA]

Terrific image Peter.....well done!