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Thread: Object of the week June 3 2012- Seyfert's Sextet AKA Hickson 79

  1. #1
    Co-Founder DSF.com Jimi Lowrey's Avatar
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    Object of the week June 3 2012- Seyfert's Sextet AKA Hickson 79

    Seyfert's Sextet (Hickson 79)

    Compact Galaxy Group

    Serpens

    J2000
    RA 15 59 11
    DEC 20 45 17

    NGC 6027 A MAG 14.8

    NGC 6027 B MAG 15.3

    NGC 6027 C MAG 15.3

    NGC 6027 D MAG 16.5

    NGC 6027 E MAG 14.4

    This is my favorite compact galaxy group. Paul Hickson said that this is the most compact galaxy group in his catalog and that the entire group would fit in the Milky Way galaxy. On nights of good seeing I like to visit this group to try and pull out new detail in this super compact group. Each season I keep returning to this group I cant seem to get enough of this fascinating grouping.
    HCG 79.jpg

    I hope you will add this group to you're list and see how much detail you can pull out and,

    "GIVE IT A GO AND LET US KNOW"

    GOOD LUCK AND GREAT VIEWING!
    Clear Skies,

    Jimi Lowrey
    Fort Davis Texas

    48"F4 OMI/TEC
    28'F4 ATM

  2. #2
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    Hi Jimi,

    "This is my favorite compact galaxy group." I'm with you, for sure one of the best and most beautiful groups out there.

    My experience are with 16" and 27". I wonder what aperture is necessary to see the group as one object...perhaps around 10"?

    sketch with 16", 450x, NELM 7m+
    HCG79_16.jpg

    sketch with 27", 419x, NELM 7m+
    HCG79_27.jpg
    Clear Skies, uwe
    http://www.deepsky-visuell.de
    Germany

    27" f/4,2

  3. #3
    Member Sue French's Avatar
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    Hi Uwe,

    One lumpy blob in a 105mm or a 130mm. Three objects in a 10-inch. All six in a 14.5-inch.

    See my reply to the Seyfert's thread in the Deep Sky forum.

    Best, Sue

  4. #4
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    Stunning observation Sue!

    Yesterday I visited the group under bad seeing with my 27" and could see, that the tail (NGC 6027e) NE of HCG 79a was easier than component HCG 79d (NGC 6027d). It seems that my old observation of the tail with my old 16" was correct - you confirm that, thanks.
    And you are also right with minimum aperture. I compare it with my observation of HCG 92 with 4". I have to try this also with HCG 79.
    Clear Skies, uwe
    http://www.deepsky-visuell.de
    Germany

    27" f/4,2

  5. #5
    Member RolandosCY's Avatar
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    I also tried this group under rather poor conditions last Thursday. The field is quite easy to locate, but even at the zenith, the high prevailing humidity (85-90%) did not allow sufficient transparency. In addition, a very warm (and humid) breeze prevented the seeing from allowing the group to break, even at 297X. For certainty I could see what shaped like a two-lobed shape, with a flickering effect on each lobe (I guess this was the result of the individual components showing on and off). With averted vision the 'lobes" seemed to enlarge in size. Unfortunately, conditions steadily deterioated - to the extend that we could barely see the spiral arms of M51 even with 18 inches... Next moring we awoke under very hazy skies. We'll give it another shot hopefully on Saturday evening...
    The Darker the Better!
    -------------------------
    18" f4.5 Obsession Classic #1934
    10" f5 Skyatcher Dob
    152mm f5.9 Teleskop Service
    Takahashi FS128
    SkyWatcher 120 f5
    Takahashi FS102
    Takahashi FSQ106N
    SkyWatcher ED80 Pro
    SkyWatcher ED72 Evostar
    Televue Naglers and Ethos

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