Click here if you are having trouble logging into the forums Cloudy Nights - Official Forums of the 2009 International Year of Astronomy Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User   You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Equipment Discussions >> Cats & Casses Previous   Index   Next   Threaded   Pages: 1 bykhed member Reged: 10/22/07 Posts: 82 Loc: Westminster, CO Ultima 8 power - tip positive?       #2648243 - 09/17/08 06:54 PM Edit   Reply   Quote Quick Reply   I recently acquired an Ultima 8 (non-PEC) that came with everything except a power cable and a manual. So I bought a 12V adaptor at Radio Shack. Is it tip positive or negative? Many thanks! -Matt -------------------- Orion 150mm Mak-Cass Wegat ETX-125 Mak-Cass Celestron C11 XLT Starizona Hyperstar 3 Skywatcher EQ6 mount "The evolution of the universe can be likened to a display of fireworks that has just ended: some few wisps, ashes and smoke. Standing on a well-cooled cinder, we see the fading of the suns, and try to recall the vanished brilliance of the origins of the worlds." - Georges Lemaitre Post Extras:       Jay_Bird professor emeritus Reged: 01/04/06 Posts: 680 Loc: Nevada 36N 115W Re: Ultima 8 power - tip positive? [Re: bykhed]       #2649019 - 09/18/08 03:55 AM Edit   Reply   Quote Quick Reply   Hi Matt center is positive I found a Ultima 8 like yours 5 yrs ago and got the 1000mA 12V Radio Shack adapter, with a dark blue identification ring on the interchangable tip(2.5mm ??) I did not save reply from Celestron tech support when I was in the same boat, but they did reply about this very same question with center positive and diameter of adapter. The adapter runs the Byers drive indefinitely while connected to 110V. Charging the internal battery before use is important. -------------------- 'these things stand like stone - kindness in another's troubles, courage in your own' Gordon Post Extras:       bykhed member Reged: 10/22/07 Posts: 82 Loc: Westminster, CO Re: Ultima 8 power - tip positive? [Re: Jay_Bird]       #2649610 - 09/18/08 12:30 PM Edit   Reply   Quote Quick Reply   Thanks Jay Bird - didn't want to short the electronics. I'll give the battery a charge before testing the scope. -------------------- Orion 150mm Mak-Cass Wegat ETX-125 Mak-Cass Celestron C11 XLT Starizona Hyperstar 3 Skywatcher EQ6 mount "The evolution of the universe can be likened to a display of fireworks that has just ended: some few wisps, ashes and smoke. Standing on a well-cooled cinder, we see the fading of the suns, and try to recall the vanished brilliance of the origins of the worlds." - Georges Lemaitre Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 5 registered and 5 anonymous users are browsing this forum. Moderator:  Jason B  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 83 Jump to *International Year of Astronomy 2009* -----   Global Coordination   Cornerstone Projects   Special Projects   Special Task Groups   Global Activities   National and Regional Activities   IYA 2009 in Africa   IYA 2009 in the USA*Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Beginners Forum   Celestial Events   Light Pollution*Equipment Discussions* -----   ATM, Optics and DIY Forum   Binoculars   Binoviewers   Cats & Casses   Classic Telescopes   Equipment   Eyepieces   Mounts   Observatories   Reflectors   Refractors    Celestron SkyScout and Meade mySky   Video and Electronically Assisted Astronomy*Astrophotography and Sketching* -----   Beginning Imaging   Film Astrophotography   DSLR & Digital Camera Astro Imaging & Processing   CCD Imaging & Processing   Solar System Imaging & Processing   Sketching   Astro Imaging/Sketching Contest *Observing* -----   General Observing   Planetary and Solar System Observing   Lunar Observing   Deep Sky Observing   Double Star Observing   Solar   Variable Star Observing and Radio Astronomy*Telescope Specific Forums* -----   Celestron NexStar    NexStar GPS / CPC Telescopes   Questar Forum   Meade ACF/RCX / LX / GPS    Meade ETX*Other* -----   Science of Astronomy & Space exploration   AstroWebsites   Space Rocks*Speciality Forums* -----   AstroArt   Astronomy Software & Computers   Stellar Media   Astro Outreach, Clubs and Star Parties*CN Feedback and Vendor Announcements* -----   Vendor and Group Announcements Home

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