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

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



    The Explore Scientific ED APO 102mm is about 5kg with the tube rings.

    https://www.bresseruk.com/astronomy/...essential.html

    My Vixen Porta II/SXG Hal-130 combination seems to easily handle 3-4kg. The Hal-130 tripod is very sturdy. The Porta II can carry 5kg (according to Vixen).

    Would I get away with mounting the Explore Scientific ED APO 102 on the Vixen Porta II/SXG Hal-130?

    Thanks.
    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?

    It's a pretty heavy beast once you get a 2" EP and finder on it. I use on on a LXD75 and Sirius AZ-EQ (same as a Skywatcher Az-EQ5) and they handle it quite nicely. Probably wouldn't use it on anything less than a CG4 EQ. mount.
    C90 (USA Rubberized, 1996), C8 (2000), ES 102 Triplet (2018), Orion ST 80 w/2" GSO focuser (2018), Starmaster 20 x 80 (2015), Eagle Optic Rangers 10 x 50 (2004), Sirius AZ-EQ G PRO (2018), LXD75 (2" legs, 2007), SLT (2008), Manfrotto 055 CF (2007) , ZWO224, Panasonic Gx8 (8 second live view, 4 shot stacking in camera)
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    Default Re: ES ED APO 102mm on Porta II/SXG Hal-130?

    Quote Originally Posted by Gx8ES102 View Post
    It's a pretty heavy beast once you get a 2" EP and finder on it. I use on on a LXD75 and Sirius AZ-EQ (same as a Skywatcher Az-EQ5) and they handle it quite nicely. Probably wouldn't use it on anything less than a CG4 EQ. mount.
    Thanks, that's what I was thinking. I could always just use it with 1.25" accessories, but I think that would be pushing it on the Vixen.
    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?

    We have a club member who regularly uses a Twilight I mount (similar to your Vixen Porta II) with an ES ED152.

    It is a terrible and frightening thing to behold.

    It can be done! I'm just not sure that it would be especially satisfying with the settle time. The dew shield on that scope would double as a fine lampshade too.
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    Default Re: ES ED APO 102mm on Porta II/SXG Hal-130?

    Quote Originally Posted by bladekeeper View Post
    We have a club member who regularly uses a Twilight I mount (similar to your Vixen Porta II) with an ES ED152.

    It is a terrible and frightening thing to behold.

    It can be done! I'm just not sure that it would be especially satisfying with the settle time. The dew shield on that scope would double as a fine lampshade too.
    Hmmm .... now you've got me thinking BK. Thinking's generally not something I'm that good at lol. The Hal-130 is a pretty sturdy tripod.



    So, what do you reckon if I predominantly use 1.25" eyepieces and diagonal?

    And possibly swap the dew shield for an actual lampshade ...
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    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?

    Gotta keep the lampshade. It is part of the overall aesthetic.

    I have a coworker who used to regularly use the ES AR127 on her Twilight I mount. It worked. The settle time was a little annoying, but it worked. The AR127 is a relatively heavy OTA.

    That said, I do not mount my own AR127 on my Twilight I. I would find that to be annoying. Plus I have a Twilight II, so...

    Bigzmey regularly uses a Twilight I and a Celestron C8, but that is a shorter OTA and less of a moment arm, etc.
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    Default Re: ES ED APO 102mm on Porta II/SXG Hal-130?

    Quote Originally Posted by bladekeeper View Post
    Gotta keep the lampshade. It is part of the overall aesthetic.

    I have a coworker who used to regularly use the ES AR127 on her Twilight I mount. It worked. The settle time was a little annoying, but it worked. The AR127 is a relatively heavy OTA.

    That said, I do not mount my own AR127 on my Twilight I. I would find that to be annoying. Plus I have a Twilight II, so...

    Bigzmey regularly uses a Twilight I and a Celestron C8, but that is a shorter OTA and less of a moment arm, etc.
    I'm guessing there's a difference with the 102mm APO though, well, basically 25mm (about an inch in old money).

    I'll have to think about this more ...
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    Default Re: ES ED APO 102mm on Porta II/SXG Hal-130?

    I figure with rings/finder/ 2" EP the triplet weighs in around 14 or 15 pounds.....
    bladekeeper and Shorty Barlow like this.
    C90 (USA Rubberized, 1996), C8 (2000), ES 102 Triplet (2018), Orion ST 80 w/2" GSO focuser (2018), Starmaster 20 x 80 (2015), Eagle Optic Rangers 10 x 50 (2004), Sirius AZ-EQ G PRO (2018), LXD75 (2" legs, 2007), SLT (2008), Manfrotto 055 CF (2007) , ZWO224, Panasonic Gx8 (8 second live view, 4 shot stacking in camera)
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    Default Re: ES ED APO 102mm on Porta II/SXG Hal-130?

    Quote Originally Posted by Gx8ES102 View Post
    I figure with rings/finder/ 2" EP the triplet weighs in around 14 or 15 pounds.....
    With the rings ES reckon it's 5kg overall. My 2" APM diagonal with a Baader Aspheric is under a kilo. 15 pounds is about 6.8 kg. It's sounding a bit over capacity I think. I might just get away with 1.25" accessories. I'd use a reflex sight.
    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?

    Quote Originally Posted by Shorty Barlow View Post
    I'm guessing there's a difference with the 102mm APO though, well, basically 25mm (about an inch in old money).

    I'll have to think about this more ...
    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.
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