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Not sure where you got your C11 from but even the lightest carbon fiber tubed USA made NS11 GPS SCT weighs more than 40 pounds when fully dressed for visual use. Granted this included Losmandy sourced V upper and D lower dovetails, Stellarvue 50mm f/4.2 RACI finder, large 3.25" mount Moonlite 2.5" focuser, 2" Baader BBHS Sitall diagonal and long 2" TeleVue eyepieces but they are not that much heavier than other similar items.?
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For imaging work the NS11 OTA is pushing 50 pounds, sometimes over depending on imaging configuration.? In any case this payload has never been a problem nor was the C14 payload an issue visually.?
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Because Losmandy mounts are not commodity mounts there is no need to estimate their imaging payload capacity using old wives tails for guidance.? Like AP, Losmandy has specified the maximum imaging payload for their mounts.? These payload limits are for commonly available optical tubes and they seem to work well as imaging payload guidelines.?
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As usual there are going to be some odd payloads that may prove difficult to manage but these optics will be on the periphery of the commonly available and used optics.??
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Chip Louie Chief Daydreamer Imagination Hardware?
Astrospheric Forecast - South Pasadena, CA?
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Chip Louie