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Thread: 10 Sharpless Nebulae Challenge for the binoculars and small scopes in summer-autumn

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    Default Re: 10 Sharpless Nebulae Challenge for the binoculars and small scopes in summer-autu



    Alan and JG, thank you much!

    Alan, well, duh! I didn't even think about Interstellarum! I'll have that out this evening and make my notes. Thanks for that reminder. I apppreciate it!

    JG, thank you sir for the additional info, and for the tips on the NAN!

    You guys are awesome!
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    Bryan
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    Default Re: 10 Sharpless Nebulae Challenge for the binoculars and small scopes in summer-autu

    Many thanks for this list... They look really interesting. My "stuff" to observe is getting longer by the day! I'll sure give all these a go though....
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    Default Re: 10 Sharpless Nebulae Challenge for the binoculars and small scopes in summer-autu

    Thanks for the list JG, I'll definitely be adding these to my list of objects to observe!! Great pictures to go along with them!!

    Also thanks to Bryan for asking the question about the NAN, as I've attempted to find it a few times and haven't been very successful either, and a big thanks to both Alan and JG for the descriptions, tips, and the link.

    A question about Cygnus X1 JG, what's actually visible when you locate it? Is it the acceration disk or the outflow jets or just the binary star HDE 226868 that's with it?

    Clear, dark skies!!
    Last edited by mwillis321; 07-04-2015 at 12:14 AM.
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    Matt


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    Default Re: 10 Sharpless Nebulae Challenge for the binoculars and small scopes in summer-autu

    Quote Originally Posted by KT4HX View Post
    Bryan, I will answer your question by tasking you with a little research. All of JG's objects are plotted in Interstellarum with the exception of Sh2-145. If you look at them, you will see a letter symbol on them. Such as for the one I mentioned, Sh-2-91 in Cygnus on chart 30. You will see it has a little purple box with an O in it. That means O-III. If you see a box with U in it at a nebula that means a narrowband UHC filter. Those are the filter recommendations that the atlases creators placed in there to aid the observer. Of course it is best to have both types because they can both be useful. If one has both, its always best to try them both to see what works best for you. Sometimes one is easily better, sometimes its a toss-up.

    Take a look at the atlas and see what you find. And yes, the moon may well have been washing out the NAN. It may look mainly like a concentration of brightness with no defined shape, but use low magnification with a wide view. It likes a narrowband UHC filter - you will notice the U in a box on top of "Florida".
    Assignment complete. I've made my notes. And I really really need to get a UHC filter. Meanwhile, I shall certainly engage my OIII on these and see what happens. And from the sounds of things outside tonight, all the popping and flashing and banging would not lend a lot of quality observing that these objects deserve. Cloudy and moony anyway.

    Thanks again, for all of your help Alan!
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    Bryan
    Scopes: Apertura AD12 f/5; Celestron C6-R f/8; ES AR127 f/6.4; ES AR127 f/9.4; Stellarvue SV102T f/7; ES AR102 f/9.8; iOptron MC90 f/13.3; Orion ST80A f/5; Celestron Premium 80 f/11.4; Celestron C80 f/11.4; Unitron Model 142 f/16; Meade NG60 f/10
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    Binoculars: Pentax PCF WP II 10×50, Bresser Corvette 10×50, Bresser Hunter 16×50 and 8×40, Garrett Gemini 12×60 LW, Gordon 10×50, Apogee 20×100

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    Default Re: 10 Sharpless Nebulae Challenge for the binoculars and small scopes in summer-autu

    Homework done - test later! Indeed, your dark adaptation would be busted by all the flash-bangs. You can certainly utilize the O-III on these objects, even though it may not be the most effective in some cases. It should be better than none at all. But I would encourage you to look at a narrowband UHC nebular filter as you mentioned. I know the DGM NPB is well thought of, as is the Orion UltraBlock. Of course you also have the excellent and more pricey brands such as Lumicon, Astrodon and Astronomik. It is up to the individual whether their price of admission is worth it. At the lower cost end is the Zhumell, which will have a broader passband, thus its performance would not be quite as tight as the others.

    Personally I am happy with my Orion UltraBlock, though I will mention that the threading on the 2 inch can be a little funky. This is a well known issue that for some reason they seem to struggle with being threaded into non-Orion eyepieces sometimes. I've experienced it, as have others. I believe its got to do with the pitch of the first couple of threads the manufacturer cuts into the cell. I can usually get it threaded on enough to hold it however, but it would be easy to cross-thread in some cases. If I were buying now, I likely would go with the DGM NPB - just my .02 worth.
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    Default Re: 10 Sharpless Nebulae Challenge for the binoculars and small scopes in summer-autu

    Quote Originally Posted by mwillis321 View Post
    Thanks for the list JG, I'll definitely be adding these to my list of objects to observe!! Great pictures to go along with them!!

    Also thanks to Bryan for asking the question about the NAN, as I've attempted to find it a few times and haven't been very successful either, and a big thanks to both Alan and JG for the descriptions, tips, and the link.

    A question about Cygnus X1 JG, what's actually visible when you locate it? Is it the acceration disk or the outflow jets or just the binary star HDE 226868 that's with it?

    Clear, dark skies!!
    Hello Matt,

    what you can see in the Cygnus X-1 is just the star making a true binary with the (not visible) black hole. I have written a post about it in past, but can't find it. Take this instead: Google-Ergebnis für http://stars.astro.illinois.edu/sow/cygx1-t.jpg , and Cygus X-1

    Best,

    JG
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