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Thread: Of globs and galaxies

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    Default Of globs and galaxies



    Some cloudless nights here lately, and the Oph/Sco messiers coming into view late with no moon in sight !!
    More messiers and Herschel 400 DSOs appear after 11:30 pm. I have also upped my viewing limit to Mag 10.2
    from Mag 10 in my DSO planner, which has added some more H400s to be tried.

    17 May 2017 11:00pm -12:30 am, Average seeing, Z8 Dob, mostly ES82 EPs
    • NGC 5363 (Mag 10.2 Spiral Galaxy in Vir) NEW: From Jupiter to the star zeta vir (Heze) to Mag 4 the star tau vir which is the middle star in the base of a triangle pointing up with sides of 4 stars (mag 6/7) each. Beyond the east side of the triangle a curved line of stars go up with 2 pairs first pair (mag6/7) second pair (Mag8) and beyond that the Mag 7 HIP 68215. Centering on this star you see a triangle of stars in the FOV of the 18mm down and to the left. The top most star of the triangle is a Mag 8 HIP 68081. You see NGC 5363 to the left of this star in the FOV. In the 18mm it looks like star with a haze around it. In the 11mm averted you can it best, but can hold it in direct. Not much details other than a bright center.
    • M107 (NGC 6171 Mag 8 Globular Cluster in Oph) NEW. From Jupiter to the star Graffias to the star zeta oph (Saik). M107 is to the west of the star zeta oph. I had tried a few days ago and failed. Hopping from the star zeta oph. In the finder SW of Saik you see a L shaped triangle of stars with the bottom of the L pointing towards M107. If you put the last star of the L in the center of the FOV in the 18mm you can see the L and M107. Extremely faint. No wonder could not see it before. So far the faintest glob in the Z8. Almost as bad as those face on spirals in Com. In the 11mm it was a presence. In the 18mm you can see it in direct a bit but better in averted. In the 30mm and 32mm a faint smudge.
    • M10 (NGC 6254 Mag 6.6 Globular Cluster in Oph) NEW: From the star zeta oph move to the east first to Mag 7 the star 23 oph by following the head of the "T" shaped asterism, and then to Mag 5 the star 30 oph golden red in color (super !!). NW of the star 30 oph is M10. You can look in the 18mm on the star 30 oph and pull the Dob NW to get M10 into the FOV. Not visible in my finder, but a very bright glob. Can easily resolve stars in periphery with the 18mm and in averted even stars towards the center. At first in the 11mm it did not look better but I revisited if after M 12 looked great in the 11mm, and got a much better view of M10 in the 11mm. It lasted for 5-10 seconds and then went soft again. I guess resolving stars with the 11mm was dependent on seeing. (Average seeing night). When the 11mm worked well you could reslove stars towards the center. In the 32 mm could not resolve stars, maybe only the ones on the very outside.
    • M12 (NGC 6218 Mag 6.7 Globular Cluster in Oph) NEW: NW from the star 30 oph you see two stars Mag 6/7. Centering on the higher of the two HIP 82405. If you center this in the FOV of the 18mm and move the scope NW you can see M12 as HIP 82405 goes out the FOV in the top. M12 like M10 is a fairly bright glob, no difficulty seeing it (although could not see it in the finder), in a rich field of Mag9-10 stars around it (Will sketch it one of these days). Also seems a little bit less dense than M10. Many resolvable stars at the periphery, in the 18mm more so with the 11mm more within the cluster mostly towards the bottom of the glob.



    18 May 2017 10:30 pm - 12:10 am Average seeing, Z8 Dob mostly ES82 EPs.

    • NGC 5248 (Mag 10.2 Spiral Galaxy in Bootes) NEW: Had planned for this last night after NGC 5363 but it got too high in Alt. Tried it a but early tonight when it is at 60-61 degress Alt. Tough one. Stellarium says it is Mag 10.97 Surf: 14.32. Hopped from Jupiter to the star zeta vir (Heze) to the star 78 vir (forms a Mag 5 triangle with the star 84 vir and HIP 66476) to triangle of Mag 6-7 stars opening NE to the star FP Vir. Centering 18mm on the star FP Vir and moving a little NW pulls up NGC 5248. A close 2 star asterism below it in the FOV helps locate a triangle of Mag 11-12 stars. On the left edge of the triangle is NGC 5248. Can barely see it because I know the exact location. A presence smudge in 18mm averted, and a little better in the 11mm averted. No shape form direction at all. As faint as they come.
    • NGC 5846 (Mag 10.2 Elliptical (?) Galaxy in Vir) NEW : Hopped from the star Beta lib which is seen by naked eyes bearing east from the star Spica. Moving north up from it saw the ellipse of stars with a center to M 5 (which can be seen in the RACI). Took a quick look at M5 and moved west towards Mag 4 the star 110 vir. Need to cross a line of 4 Mag 7-8 stars. The second from the bottom HIP 74129 is the closest. You can also see a fainter Mag 8 star in the star 110 vir. Centering the 18mm on HIP 741429 you see a Mag 10 star to the left of it. Joining these two in a line you come across another of those snail asterisms, a triangle with an extended base. Base pointing top right in FOV. Above the middle of the base extension above the top vertex is NGC 5846. Faint smudge in 18mm averted only. In the 11mm much better can sometimes hold in direct, but mostly in averted. These are at my limiting mag, even an elliptical is difficult in this range. There should be 3 more galaxies in the FOV with NGC 5846 being the brightest (BCG group?). Could not see any of the rest. Something to be left for darker skies.
    • M80 (NGC 6093 Mag 7.3 Globular Cluster in Sco) NEW: This one I had tried very hard on my 100mm Mak last year but never could see it. Hopped from the star delta sco (Dschubba) east to the star 19 sco and the triangle of the sigma Oph Nebula. Row of stars NE from the star 19 sco , pick 2nd star and move NW to a Mag 7 HIP 79897. Move to the 18mm and move a little NW and see the cluster come into view. Bright glob but very tight. Easy to see in both 18mm and 11mm but could not resolve stars. Maybe in the 11mm some were resolved once in a while (seeing is not very good) inspite of what the boxes say. Good sketch potential in the 18mm as lot of stars around it.


    Thanks for reading
    AR
    Scopes: Zhumell Z8, Bushnell 1300x100 Goto Mak, Meade Adventure 80mm
    Eyepieces: ES82 18,11mm, Zhumell 30,9mm Bushnell 25mm, Omni Plossl 32,12,9mm, Meade 2x S-F Barlow, DGM NPB filter.
    Binos: Celestron Skymaster 15x70 (Albott tripod/monopod), Nikon Naturalist 7x35

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    Harshil Patel's Avatar
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    Default Re: Of globs and galaxies

    Nice targets...!
    AsteroidsRock likes this.
    Harshil.

    Telescope>> celestron power seeker 76az reflector.
    eyepiece>> 20mm, 4mm, 3x barlow.
    binocular>> 10x50 DPS i (FOV 6.5).

    software>> Stellarium

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    Default Re: Of globs and galaxies

    Great job, AR! Excellent star hopping and object descriptions!

    Good to see you pushing your limiting magnitude up!

    Loads more globs in Oph and Sgr...just sayin...
    AsteroidsRock likes this.
    Bryan
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    Default Re: Of globs and galaxies

    This is a wonderfully detailed report. I love reading. And I have a question...I am very new to the details of the night sky...how do you know the magnitudes of the various stars you discribe in your star hops. Does this simply come with time and experience?
    ES 80 Apo

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    Default Re: Of globs and galaxies

    Quote Originally Posted by Eagleheaf View Post
    This is a wonderfully detailed report. I love reading. And I have a question...I am very new to the details of the night sky...how do you know the magnitudes of the various stars you discribe in your star hops. Does this simply come with time and experience?
    Thanks.

    No, I look up the Mags in Stellarium or Sky Safari Pro.

    When I am planning my hop, I look up the mags, which tells me a) can I see them with naked eyes (approx Mag 3) or b) can I see them in the RACI (approx Mag 7) or c) in the EP. It helps to keep tabs on the Mags, because if you are looking for a triangle of stars, there are a whole lot of triangles, and the mag often would help you get to the right triangle. This is especially true in the eyepiece hops but sometimes in the RACI as well, especially if you hop longer distances from a bright star. I try predicting the mags of the stars in the EP and then check, and I am getting better at it, but in my logs I usually verify them before writing just like I verify the names of the fainter stars.

    In the long run, I would like to be able to get to a visited DSO based on my logs and paper charts without any tech at a dark site.
    AR
    Scopes: Zhumell Z8, Bushnell 1300x100 Goto Mak, Meade Adventure 80mm
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    Default Re: Of globs and galaxies

    Quote Originally Posted by bladekeeper View Post
    Great job, AR! Excellent star hopping and object descriptions!

    Good to see you pushing your limiting magnitude up!

    Loads more globs in Oph and Sgr...just sayin...
    Thanks. Yes after 1:30 am I see my whole DSO planner page full of untouched Messiers and NGCs

    But I am rationing my rum ... er... DSOs to make them last the whole year
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    AR
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    Default Re: Of globs and galaxies

    Congrats on a couple of great nights of observing, AR! Very nice report!
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    Default Re: Of globs and galaxies

    Very well done AR. A fine set of objects for a fun evening. I can't think of anything better than an outing filled with galaxies and globulars - my two favorite type of objects.
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    Default Re: Of globs and galaxies

    Great job on the descriptions...AND the star hopping. Really enjoyed the read!!

    Dave
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    Default Re: Of globs and galaxies

    Very nice report AR with thorough descriptions, good job!
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