Jump to content

SkySurveyBanner.jpg.21855908fce40597655603b6c9af720d.jpg

martinux

New Members
  • Posts

    6
  • Joined

  • Last visited

Reputation

0 Neutral

Profile Information

  • Location
    Ireland

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. Just a quick update for anyone who stumbles upon this topic (though hopefully nobody will ever have the same issue!): John at OOUK advised me: "The optics in these are meant to be spherical but end up being ellipsoids to match the irregular corrector plates." and thus it's not as straightforward as sourcing a spherical mirror. The cost to make a replacement mirror for the SN10 is greater than an equivalent OOUK VX10 OTA so I'll be looking at it, the Skywatcher 250P and a few other OTAs and weighing up the pros and cons before I commit. Alas, poor SN10, you were a great scope.
  2. Many thanks for offering, AL1, and apologies for not getting back to you sooner! I'm not able to measure the FL myself as the mirror fragments were disposed of (short-sighted of me but it was a hazard at the time). I had no luck with astrobuysell and a few things have come up that have taken much of my time in the interim but I'll have a look at ebay. Thanks for the suggestion.
  3. Many thanks for your input, everyone. Really great idea with determining the mirror focal length. After looking at prices including OO's website for mirrors close to the required spec it seems to make a lot of financial sense to look at a new OTA, however I'll place a wanted advert and see what comes up. Clear skies!
  4. Many thanks for the replies. Unfortunately SN10's seem to be a bit of a rare beast. I had a search through the UK astrobuysell adverts and they don't come up very often (in this part of the world, at least). I'm still concerned by the discussion of "matched optics"; I could end up with two sets of incompatible optics. Still, I suppose a wanted advert might be worth a try in case someone has their orphaned primary sitting on a shelf in their shed.
  5. Due to an unfortunate accident my SN10 primary mirror is broken. While it was an unwieldy beast and pretty much required a complete rebuild when I got it from the previous owner I really loved it. My understanding, thanks to discussions between owners of this OTA, is that the SN10 used a spherical mirror. However Meade's representative did not wish to confirm this "proprietary information" after stating that they could not sell me a replacement. So, I'm stuck with a bit of a quandary: do I roll the dice and attempt to get a spherical mirror constructed? (I doubt that non-parabolic mirrors are routinely manufactured and would probably come at a price-premium). I have read anecdotal discussions that the primaries are somehow "matched" to the schmitt correctors which, I must admit, makes no sense to me as I thought that a spherical mirror was manufactured with a uniform curvature. Thus, without more information, I'm thinking that this could be an expensive and ultimately unworkable solution. Alternatively, do I cut my losses and replace it with something like a Skywatcher 250P? Any other suggestions? Many thanks for taking the time to read this and for any advice you can render.
  6. Hi everyone on the island of Ireland and beyond. I had to put astronomy on hold for a few years as I was working away from home on a fairly demanding job (and we welcomed a new arrival into the universe who I've noted avidly watches the moon from her cot when the clouds permit). I'm back in a position that I can dust off my telescopes and I am looking forward to more observing/imaging sessions. Clear skies, everyone!
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.