Quote:If cheapest is desired, build a ring of resistors to attach to the corrector's retaining ring, and cover with a layer of foam or other insulating material (to lessen radiated heat going directly to the sky.) For a 14", in conjunction with a (ideally non-metallic) dew cap, about 10 Watts of heat should do the job. And no variable controller is required.I've made a variant on this, where instead of individual resistors I cut a handy length of the inner heater wire taken from pipe heating cable. The resulting 4.8W works beautifully on my C8, where the heating element is attached and insulated as outlined above, and augmented with a commercial, flexible plastic dew cap.And I've never bothered with heater controllers, relying on designing to a wattage which will just comfortably do the job while continuously powered.
Quote:Ok folks ...Whats the cheapest and best way to get a zapper for my C14 Classic? Do I really need the variable heat controller gizmo?? Can u recommend a brand??
C14 EdgeHD, C11 EdgeHD Zhumell 8" f/6 Newt AP1200GTO, CGEM DX, CG5-ASGT Rob Miller Tri36M tripod Canon Rebel XS, Atik 314L+, DSI pro I,II, QHY5L-II SX 7 FW with Astrodon LRGB, Ha 5nm Hutech OAG5, Rainbow Optics Grating Scorpio Observatory
C-14 HD on CGE Pro Mount 80 MM Orion CF triplet Green Zebra Observatory Mallincam MCHC
ROR Observatory Levenhuk 8" carbon fiber RC, Astro Physics CCDT67 Astro-Tech AT8IN w/Moonlite, Baader Mark III MPCC Levenhuk 80mm triplet, Astro Tech 0.8X reducer/flattener Celestron CGEM DX w/HyperTune STF-8300M SX 7 position 36mm CFW Astrodon 5nm H-alpha Little Piney Observatory