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Thread: King 5

  1. #1
    Join Date
    Dec 2006
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    2,940

    King 5

    I have a major processing error here. Forget this image, I'll have a corrected version up once I get it finished. Seems I used LRBB processing, using the blue frame for green as well as blue. Also I say f/5 when it was taken at f/10. Two crashes!
    Rick

    King 5 is an open cluster in Perseus. The King catalog of star clusters is small. There are only 26 members and #3 is missing or a duplicate of NGC 609, depending on who you wish to believe. Nearly all King clusters reside in a narrow band about 50 to 60 degrees North declination and are in the Milky way running from about 23 hours R.A. to 3 hours. So they are in a rather small area of the sky. It appears King made three searches for previously unknown clusters as the catalog runs from 0 through 24 hours, then does so again, then does so again. Each time picking up less obvious clusters. Some may not even be true clusters. One is actually well below the celestial equator. It must be the outcast member of the group. Anyway I happened to need something in the only clear spot on the sky one night and this was the object. Not needing a lot of exposure time I started to image it. The sky clouded over then cleared then clouded then cleared. With the poor sky I just kept imaging and ended up with my normal exposure time but it was visible only about 20% of the time. The rest of the time I was seeing nothing but clouds. So this image doesn't go very deep compared to my normal images but is rather pretty. The cluster is estimated to be about 6000 light years from us. Distances to such clusters is not easily measured so this is only a rough estimate. Like all King clusters it is made up of faint stars so not a cluster to see visually unless you are using a 20" or larger telescope.

    14" LX200R @ f/5, L=4x10', RGB=2x10', STL-11000XM, Paramount ME

    Full size version:
    http://www.spacebanter.com/attachmen...tid=2310&stc=1

    Rick
    Attached Images Attached Images
    Last edited by RickJ; 2009-Jan-29 at 09:37 PM. Reason: I goofed

  2. #2
    Join Date
    May 2007
    Posts
    126
    That's a very pretty shot there Rick.
    Nice job.
    Is it me or dose there seem to be an absence of brighter stars in the upper portion of the image? Looks like the upper part of the picture is made up of mostly dimmer reddish stars.

  3. #3
    Very nice Rick. Any more Kings in the pipeline ?

  4. #4

  5. #5
    Join Date
    Dec 2006
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    2,940
    Quote Originally Posted by jniemann View Post
    Very nice Rick. Any more Kings in the pipeline ?
    Not right now. I'm concentrating on Arp galaxies. This was just something to take when the skies allowed nothing else. Most open clusters don't image well at my focal length so I don't image many. With the clouds I figured I'd grab one and when I checked against my database this was the only one that seemed to fit but clouds really ruined getting much. Color balance is poor as I have no idea what the true exposure time for each filter was. Just that clouds covered things most of the time. I see now I have too much green in it. Several have mentioned that to me. My monitor is out of calibration and appears I can't adjust the green any further (10 year old CRT). So I didn't see it. Normally I color balance by formula based on its elevation when taken and the response curves of my CCD and filters. That wasn't possible since I didn't know the exposure time in the first place thanks to clouds. Appears green was less clouded out than I estimated so it is green heavy.

    King clusters are small and mostly rather sparce. This is one of the best ones. Not sure if I'll image any more or not. Maybe after I've finished the Arps I can see from my location. They are now all too near the sun as they reside in a rather small area of sky only about 6 hours wide. Sun is quickly closing in on the center of that area. This was taken several months ago and just now processed. I shoot far faster than I process so even with lousy weather I can't keep up!

    Rick

  6. #6
    Join Date
    Sep 2005
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    3,142
    Still a very beautiful open cluster, and colors. Great!.

  7. #7
    Join Date
    Jul 2007
    Posts
    878
    I see what you mean about the blue but a curios little cluster all the same. Unusual alignment of stars.

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