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Thread: Sirius precision

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    not_Fritz_Argelander's Avatar
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    Default Sirius precision



    Past items italicized. Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7, Orion and SW 80 and 120 ED doublets, Orion 120 f8.3, Tasco 30x30, Edmund 40; Newtonians: AT 8”f4, OC 8”f6.3, Z12 f5, self made 6” f9, Orion XX14i; Catadioptrics: VMC110L, Intes MK66, Orion 102 MakCas f12.7, Celestron 9.25 SCT and 9.25 Edge. EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, TV Nagler, ES100s. Mounts: Orion Sirius EQG, Star Seeker III, Celestron CG5, Vixen Porta II, Losmandy G11

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    Default Re: Sirius precision

    Excellent work Mr. ????, and he replies "Bond ....... Howard Bond" ........ nope, doesn't quite have the right ring to it.

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    Default Re: Sirius precision

    Interesting...patience...can these two be split by amerture astronomers?

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    Default Re: Sirius precision

    Oh, yes! The separation is widening.

    https://florin.myip.org/blog/how-see-sirius-b
    Past items italicized. Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7, Orion and SW 80 and 120 ED doublets, Orion 120 f8.3, Tasco 30x30, Edmund 40; Newtonians: AT 8”f4, OC 8”f6.3, Z12 f5, self made 6” f9, Orion XX14i; Catadioptrics: VMC110L, Intes MK66, Orion 102 MakCas f12.7, Celestron 9.25 SCT and 9.25 Edge. EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, TV Nagler, ES100s. Mounts: Orion Sirius EQG, Star Seeker III, Celestron CG5, Vixen Porta II, Losmandy G11

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    Default Re: Sirius precision

    WOW ! nFA. Thanks for that. I will celibrate the new year with my grandson by splitting these two stars with him next January. Very interesting and highly educational read. Thank you again nFA!
    By then I may actually know how to use my telescope. :-)

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    Default Re: Sirius precision

    I think we all know "An Exercise in Patience".
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    Default Re: Sirius precision

    Quote Originally Posted by not_Fritz_Argelander View Post
    There some really nice fails with the visual plotting on that graph lol
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    Default Re: Sirius precision

    I have wondered what the sight of Sirius would be like if what is now Sirius B was still a main sequence star. With the mass of the white dwarf being about the mass of our Sun, its main sequence mass must have been much larger than Sirius A. Sirius A might have been a bit smaller then, and then picked up mass as Sirius B shed mass as it died. If the pair were at the same distance from us as they are now, it must have been quite a show. It would also have been quite interesting to see the planetary nebula created by Sirius B with Sirius A cutting a swath through the material.
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    Default Re: Sirius precision

    The past evolution of Sirius is a problematic topic. Let me look for details.
    MistrBadgr likes this.
    Past items italicized. Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7, Orion and SW 80 and 120 ED doublets, Orion 120 f8.3, Tasco 30x30, Edmund 40; Newtonians: AT 8”f4, OC 8”f6.3, Z12 f5, self made 6” f9, Orion XX14i; Catadioptrics: VMC110L, Intes MK66, Orion 102 MakCas f12.7, Celestron 9.25 SCT and 9.25 Edge. EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, TV Nagler, ES100s. Mounts: Orion Sirius EQG, Star Seeker III, Celestron CG5, Vixen Porta II, Losmandy G11

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    Default Re: Sirius precision

    Here is an article that sets out the problems of the evolution of Sirius.

    1961ASPL....8..255J Page 255
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    Past items italicized. Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7, Orion and SW 80 and 120 ED doublets, Orion 120 f8.3, Tasco 30x30, Edmund 40; Newtonians: AT 8”f4, OC 8”f6.3, Z12 f5, self made 6” f9, Orion XX14i; Catadioptrics: VMC110L, Intes MK66, Orion 102 MakCas f12.7, Celestron 9.25 SCT and 9.25 Edge. EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, TV Nagler, ES100s. Mounts: Orion Sirius EQG, Star Seeker III, Celestron CG5, Vixen Porta II, Losmandy G11

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