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playground:playground [2018/02/03 22:09] paul removed |
playground:playground [2020/07/29 02:38] (current) |
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- | Dome flats | ||
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- | ====== Setup for LED dome flats ====== | ||
- | ===== R. Boyle & E. Green ===== | ||
- | === 5/17/2015 === | ||
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- | * No need / better NOT have the telescope running (no oil system in basement) But TCS must be running to see telescope ALT, AZ, and DOME AZ readout. | ||
- | * Telescope points to white square in dome at DOME AZ=351°, and telescope fixed AZ=180° (same as stow), manually bring Alt to 30° | ||
- | |||
- | ---- | ||
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- | === Bringing the screen South by turning the Dome === | ||
- | * Before taking flats, turn the Dome so that screen is due South of the telescope: | ||
- | * Open TCS glue. And turn on dome TV monitor. | ||
- | * In dome remove DOME SHORT and plug in YELLOW PLUG for dome. | ||
- | * Make sure that LN2 35-lt supply tank is removed from under telescope, and the grounding wire is removed. | ||
- | * Take out stow pins. | ||
- | * In control room turn on pa system loud. | ||
- | * In Vattel room, turn on "Dome current" | ||
- | * TCS GUI: click left mouse button to turn on dome tracking; when tracking is on, right click on dome tracking box to open dome subwindow. In the subwindow click " | ||
- | |||
- | ---- | ||
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- | * After finishing your flats, return dome to home AZ 180°: | ||
- | * In DOME Tracking subwindow: click on " | ||
- | |||
- | ---- | ||
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- | === Manual adjustment in ALT === | ||
- | * Before taking flats, tilt the telescope in ALT manually so that it points at the screen: | ||
- | * In mount control, click "open mirror cover." | ||
- | * Send co-observer to the dome while observer sits at TCS terminal. | ||
- | * Observer: click "brake off" while co-observer is standing next to the telescope. (If telescope starts to fall down in ALT independently, | ||
- | * Co-observer: | ||
- | |||
- | ---- | ||
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- | * After finishing your flats, return Telescope ALT to 90° by reversing how you put it to 30°: | ||
- | * Co-observer in dome ready to push up, after observer at console releases brake, and tells when ALT=90°. Then brake on, stow pins in. Close mirror cover. | ||
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- | ---- | ||
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- | === Operating the LED lamps === | ||
- | * in control room, on terminal running AZCAM: | ||
- | * open Internet Explorer, | ||
- | * click on "new tab" | ||
- | * click on star (favorites) | ||
- | * click on "Vatt flatfield LED GUI" this opens GUI with all the lamps OFF. So to turn on lamps, click on boxes or on sliders to select percent illumination | ||
- | * make test flats to your satisfaction. Keep exposure times above about 4 or 5 seconds to avoid shutter-effect dependence | ||
- | * when finished flats, click lamps off, then close IE browser | ||
====== PlayGround ====== | ====== PlayGround ====== | ||