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Thread: ES ED APO 102mm on Porta II/SXG Hal-130?

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    Default Re: ES ED APO 102mm on Porta II/SXG Hal-130?



    Quote Originally Posted by sketrip View Post
    I used the SV102 on the Twilight I exactly one time - It took a while to settle & was sensitive to wind. It drove me nuts as I'm not
    exactly a patient sort.

    I replaced the "tuning fork" portion of the mount with an extension & M2 mount. It works well but I do miss the slomo controls.
    Thanks for the information, it's very helpful. I've come to the conclusion I'll get a lighter ED doublet 102mm lol.
    sketrip likes this.
    TS Optics: 150mm, f/6 Newtonian (GSO SVD series). Altair: Starwave 102ED-R. Sky-Watcher: SkyMax 102mm, SkyMax 127mm, Evostar 72ED DS Pro, Evostar 80ED DS Pro, ST80 (TS Focuser), ST102 (TS Focuser), EQ5 Deluxe, AZ5 Deluxe. Vixen: Porta II, SXG Hal-130. Orion: 90mm StarMax , ST80 (TS Focuser). Celestron: NexStar Evolution 9.25". William Optics: E-BINO-P Binoviewer. A shed load of eyepieces including: Antares, Astro Hutech, Baader, Bresser, BST, Bushnell, Celestron, Explore Scientific, GSO, Kokusai, Meade, Orion, Sky-Watcher, Solomark, SvBony, TeleVue, Vixen & one or two I'm not sure of.

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    Default Re: ES ED APO 102mm on Porta II/SXG Hal-130?

    I may have miscalculated ... the Porta II can handle 20 pounds, which is about 9kg.

    https://www.vixenoptics.com/Vixen-Po...unt-p/5863.htm

    EDIT: Maybe not.

    https://www.vixenoptics.co.uk/Pages/porta_II_mount.htm

    Then there's http://www.skyatnightmagazine.com/re...ts/vixen-porta

    TS Optics: 150mm, f/6 Newtonian (GSO SVD series). Altair: Starwave 102ED-R. Sky-Watcher: SkyMax 102mm, SkyMax 127mm, Evostar 72ED DS Pro, Evostar 80ED DS Pro, ST80 (TS Focuser), ST102 (TS Focuser), EQ5 Deluxe, AZ5 Deluxe. Vixen: Porta II, SXG Hal-130. Orion: 90mm StarMax , ST80 (TS Focuser). Celestron: NexStar Evolution 9.25". William Optics: E-BINO-P Binoviewer. A shed load of eyepieces including: Antares, Astro Hutech, Baader, Bresser, BST, Bushnell, Celestron, Explore Scientific, GSO, Kokusai, Meade, Orion, Sky-Watcher, Solomark, SvBony, TeleVue, Vixen & one or two I'm not sure of.

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    Default Re: ES ED APO 102mm on Porta II/SXG Hal-130?

    You should be fine. From what I gather Porta II should perform similar to my ES Twilight I. I routinely use 8" SCT OTA (~6 kg) with 2" diagonal, 2" EPs and 9x50 RACI. It is a bit shaky but not to the point of been annoying. Also with strategically positioned bungee cords, vibrations die fast.

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    F5, Onyx 80ED F6.3; ES: 127mm CF F7.5 APO. Mounts: ES Twilight I, Bresser EXOS2, SW SkyTee2, UA MicroStar. Binos:
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    15x70, 10x50, Celestron 8x42. EPs: TeleVue: Delites, Plossls & barlows; ES: 82os & 68os; Vixen: SLVs; Baader: BCOs & Aspherics; Meade: UWAs & Plossls; Celestron: X-Cel LXs; BST: Flat Field. Filters: Astronomik: UHC; Lumicon: OIII, H-beta, DeepSky; Baader: UHC-S, M&SG, CB; Orion: UltraBlock, SG. DSO tally: 1119 (H400-1: 400, H400-2: 244, H300-3: 84;
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    Default Re: ES ED APO 102mm on Porta II/SXG Hal-130?

    Quote Originally Posted by Bigzmey View Post
    You should be fine. From what I gather Porta II should perform similar to my ES Twilight I. I routinely use 8" SCT OTA (~6 kg) with 2" diagonal, 2" EPs and 9x50 RACI. It is a bit shaky but not to the point of been annoying. Also with strategically positioned bungee cords, vibrations die fast.
    Thanks Bigzmey. I'm leaning towards a 4 kilogram Altair ED doublet 102mm now.
    TS Optics: 150mm, f/6 Newtonian (GSO SVD series). Altair: Starwave 102ED-R. Sky-Watcher: SkyMax 102mm, SkyMax 127mm, Evostar 72ED DS Pro, Evostar 80ED DS Pro, ST80 (TS Focuser), ST102 (TS Focuser), EQ5 Deluxe, AZ5 Deluxe. Vixen: Porta II, SXG Hal-130. Orion: 90mm StarMax , ST80 (TS Focuser). Celestron: NexStar Evolution 9.25". William Optics: E-BINO-P Binoviewer. A shed load of eyepieces including: Antares, Astro Hutech, Baader, Bresser, BST, Bushnell, Celestron, Explore Scientific, GSO, Kokusai, Meade, Orion, Sky-Watcher, Solomark, SvBony, TeleVue, Vixen & one or two I'm not sure of.

 

 
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