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Thread: Sirius precision

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    not_Fritz_Argelander's Avatar
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    Default Sirius precision



    EPs: KK "Fujiyama" Orthoscopics; Baader Classic Orthos (2x); Vixen NPLs 40-6mm (2x); Pseudo Masuyamas (Takahashi, Kasai, Parks, Orion) 50-5mm; TV Panoptics; TV Delos 17.3-8mm; TV Plössls 32-8mm; Meade HD-60 25mm; Vixen LV Zoom 8-24mm; Baader Mk IV Zoom 8-24mm (2x); Gary Russell 65mm Plossl; GSO SVs; random Kellners.
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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?
    MARK
    ES 80 APO f6, SW PRO100Ed f9, ES 127 FCD100 f7.5. 127 Mak f12, MeadeLXD75 8 SCT, ST80, BUSH60 f15. TV, PENTAX, KK, GSO, LEITZ, ES...ASSORTED 5 TO 40MM, PERIPLAN 10X GF, 12.5X GF. Leica HC 10X /25.OBERWERK 25X100, FARPOINT P -MOUNT, PENTAX 8X43, SWAROVSKI 10X30>)))))*>

    Messier count 78

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    Default Re: Sirius precision

    Oh, yes! The separation is widening.

    https://florin.myip.org/blog/how-see-sirius-b
    EPs: KK "Fujiyama" Orthoscopics; Baader Classic Orthos (2x); Vixen NPLs 40-6mm (2x); Pseudo Masuyamas (Takahashi, Kasai, Parks, Orion) 50-5mm; TV Panoptics; TV Delos 17.3-8mm; TV Plössls 32-8mm; Meade HD-60 25mm; Vixen LV Zoom 8-24mm; Baader Mk IV Zoom 8-24mm (2x); Gary Russell 65mm Plossl; GSO SVs; random Kellners.
    Scopes: Ref: Baader Vario 60f4, Orion 70f4, Orion ST80f5, SV ED80Af7; Newt: AT200f4, OC200f6.3, Z12 300f5; Cat: VMC110L 110f9.4, Intes MK66 150f12.

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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. :-)
    MARK
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    Messier count 78

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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.
    Bill Steen
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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.
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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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