Friends call me Duane. Compustar C14, Leo Henzl's Custom C8, 6" Refractor Adv. GT mount, 6" F5 Omni XLT Newt., LXD-75 F4 Imaging SN8, Meade 8" F6 Newtonian, EX Dynamax DX6, RV-6 ETX-90 Astro, Meade 2045 4" SCT, B&L 4000 Vixen/Celestron 80mm F11 JC Penny 60mm AZ/ALT Refractor Binos 25x100
Gregg 10" f8 Newtonian 12.5" F 4.5 Cave Astrola Unitron 114 w unihex , Unitron 128, Tasco 7te, Tasco 7te-5,Criterion 4000
Quote:Maybe someone knows if running it offer a battery pack reduces any shock or electrocution risk? Disclaimer This posts has no disclaimers.LGM
Quote:Quote:Maybe someone knows if running it offer a battery pack reduces any shock or electrocution risk? Disclaimer This posts has no disclaimers.LGM 120VAC is still 120VAC - even if it has been inverted from 12VDC. Power delivery varies by inverter, but in general, most of the same cautions should apply. There's no current limiting in place and the unit will deliver until the fuse/breaker terminates the circuit. As little as 10mA to the heart will stop it. That's not a lot of current. Given perfect (or imperfect) conditions, moisture, point of application, electrocution could occur.No disclaimers. Just casual observations by one who works in the cardiac rhythm management business.
Quote: I'm serious tho about having a visual mount with a mechanical clock drive.. they could be made...
Homemade 'scopes 8"f/7,6" f/5", 6"f/4, 4.25" Schiefspiegler,60mm Coronagraph,60mm H-alpha system, 4.25" White-light Solar Newtonian,solar spectroscope, 4" f/12, 4.5" f/16 & 6" f/12 Schupmann Medial refractors, 4" Celestar, 19 Stellafane awards 9 in optics Engineering = Taking what you have and making what you need.
Quote:You know if some one could come up with an inexpensive Wind up Clock drive, I'd be ALL over it for general observing!I'd even try it with go-to... just give me that BIG keylike the Robots in the 50's had in back LOLI'm serious tho about having a visual mount with a mechanical clock drive.. they could be made...
"The White Zone is for loading or unloading of passengers only. No Astrophotography." Cosmic Acres! Greatest restoration challenge: Tulley and Sons 3" achromat on Altazimuth mount, circa ~late 1820s
Cave Mirror Registry
1971 Cave 10" f/6 Custom Super Deluxe
1958 Cave 10" f/7 Model C De Luxe
1974 Cave 8" f/8 Model B Deluxe
1970 Cave 8" f/6 Lightweight Deluxe
1971 Unitron 145C
1 Caveman Award!
George You know you're getting on when the equipment you farmed with is showing up as suburban lawn ornaments.
Quote:In Australia clocks run on 240v.
Quote: I just checked my two old sand cast C-8 mounts with the two prong Jones plug. There is Continuity between the motor housing and the unpainted back of the mount, but none to any painted section of the mount. While the paint is not a perfect solution it does provide some protection. A simple solution is to make up a new cord using a three wire grounded plug. At the Jones plug, pull out the green grounding wire and attach it to one of the screws that hold the male Jones plug into the mounting base. Now the scope is grounded as long as you use a grounded outlet with hopefully a GIF on it. I also have Criterion RV-6 and when I restored in many years ago, I replaced the original cord with a three wire molded one and attached the ground wire to one of the bolts on the motor mount. - Dave
Uncle Rod Uncle Rod's Astroblog: http://uncle-rods.blogspot.com/
Quote:Maybe someone knows if running it offer a battery pack reduces any shock or electrocution risk?
Quote: 2. I do not recall ever hearing, over the past 43 years, of anyone being electrocuted by a dadgum C8.
Quote:"It appears that there are enormous differences of opinion as to the probability of a failure with loss of vehicle and of human life... We have also found that certification criteria used in Flight Readiness Reviews often develop a gradually decreasing strictness. The argument that the same risk was flown before without failure is often accepted as an argument for the safety of accepting it again. Because of this, obvious weaknesses are accepted again and again, sometimes without a sufficiently serious attempt to remedy them, or to delay a flight because of their continued presence... The acceptance and success of these flights is taken as evidence of safety. But erosion and blow-by are not what the design expected. They are warnings that something is wrong. The equipment is not operating as expected, and therefore there is a danger that it can operate with even wider deviations in this unexpected and not thoroughly understood way. The fact that this danger did not lead to a catastrophe before is no guarantee that it will not the next time."
Report of the PRESIDENTIAL COMMISSION on the Space Shuttle Challenger Accident
Quote:Astrolas & etc, are just as dangerous. Worn extension cords are indeed a more likely hazard, the takeaway point here is that there is a very good reason undgrounded electrical devices are prohibited by code.
Quote: But, the awesome Feyman not withstanding, I know of no one succumbing to death due to C8 or from Colonel Mustard in the library..
Quote:Quote: But, the awesome Feyman not withstanding, I know of no one succumbing to death due to C8 or from Colonel Mustard in the library.. People dying by electrocution trying to use a telescope you say? Sure, it happens. ok, they really do not say whether it was a C8 or not, but: Man dies of electrocution trying to watch meteor shower
Quote: Actually he didnt even need the telescope to see a meteor shower, but as you saw, he did indeed die by electrocution. That it wasnt the telescope that electrocuted him is an important detail, but he was certainly trying to use a telescope in the incident. so therefore: He was electrocuted while trying to use a telescope.