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Thread: OBSERVING REPORT 10 March 2018.

  1. #11
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    Default Re: OBSERVING REPORT 10 March 2018.



    Thank you for all the great comments!

    It was good to finally get some sky time and bag a galaxy!
    The seasons are slowly changing and soon we will have almost three months of clear crisp night skies.
    Durban is considered the holiday capital of South Africa and the clouds play along and go away on their own vacation every winter for a few months, cannot wait!

    Thanks again for the encouragement with NGC 3115 Alan.
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    Default Re: OBSERVING REPORT 10 March 2018.

    Very lucky with all that southern celestial real estate. Have fun!
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    Default Re: OBSERVING REPORT 10 March 2018.

    Sorry to hear about you not being able to see many galaxies, even in an 8 inch.

    What is with these Ruprecht clusters? I am trying to see some in CMa, but they are minuscule and faint, just a few lil starlets. Are all like that?
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    Default Re: OBSERVING REPORT 10 March 2018.

    Quote Originally Posted by milanpicard View Post
    Sorry to hear about you not being able to see many galaxies, even in an 8 inch.

    What is with these Ruprecht clusters? I am trying to see some in CMa, but they are minuscule and faint, just a few lil starlets. Are all like that?
    Milan, not to answer for Clinton, but I can share some info about the clusters you are seeking in Canis Major. I found 21 Ruprecht clusters listed in CMa. Of those the brightest is Ruprecht 19 at mag 7.4 and 5.0' in diameter. It is plotted in the IDSA on chart 72-left (and 84-left) between -21° and -22° declination near the border with Puppis. The atlas plots no stars for this cluster within its stellar mag limits. Of the other 20, I have magnitudes listed for 14 of them ranging from 9.4 (7.0' diameter) for Ruprecht 18 to mag 14.0 (5.0' diameter) for Ruprecht 12. The others do not list magnitudes. The sizes range from the largest at 7.0' down to 1.0' in diameter. There is only one other that is listed below magnitude 11.0 and that is Ruprecht 20 with a diameter of 5.0' and magnitude of 9.5. It is also plotted on chart 84-left just northeast of Eta CMa. The atlas plots one star for it.

    So you are correct, for the most part they are small and dim. But one has to remember these are the results of research projects utilizing imagery and thus what we can discern visually in our instruments is often very different. FYI, my reference for this data is the book Star Clusters by Archinal and Hynes. I also utilized Sky Tools 3 to generate the list in CMa. Hope that helps.
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    Default Re: OBSERVING REPORT 10 March 2018.

    Quote Originally Posted by milanpicard View Post
    Sorry to hear about you not being able to see many galaxies, even in an 8 inch.

    What is with these Ruprecht clusters? I am trying to see some in CMa, but they are minuscule and faint, just a few lil starlets. Are all like that?
    Some are reasonably obscure and not much to write home about.
    Here is a interesting link I found that explains more about the man and his catalog: The star sweepers-Galaxy map.
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    Default Re: OBSERVING REPORT 10 March 2018.

    Thank you for the valuable info again, Alan. And King, for the link. Alan, those are exactly the clusters I wrote out for myself. Not exactly a panorama, unfortunately. But with so few new things to go, what can I do?
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    Default Re: OBSERVING REPORT 10 March 2018.

    Great session Clinton.
    Thank you for sharing.
    Clear skies.
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    Default Re: OBSERVING REPORT 10 March 2018.

    Congrats on bagging NGC3115! I saw it for the first time not so long ago and really liked the slender shape of it (also got lost, as you did )

    Here are the remarks on my meet with this fair lady:

    "This one is a bit tricky to find. It looks like a stick of light to me, I got the best views at 133X. I remembered a post from Alex (mental4astro) while observing the galaxy because it looked the best after the nudges to center it or after I got away and got back to the EP. So I guess the “refresh” button of the brain really helps when observing this object. Anyway, very nice galaxy."

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