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Tickets/sitcom 1475 #130

Merged
merged 1 commit into from
Oct 15, 2024
Merged

Tickets/sitcom 1475 #130

merged 1 commit into from
Oct 15, 2024

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kpenaramirez
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Dear colleages,
The MTDome intro webpage is now live in obs-doc. The html version can be accessed here.

It is one page long, it gives an overall picture of the MTDome and offers a brief description of its main controllers. At the bottom, the webpage will include in the future the operational procedures as they begin to be created/migrated.

Your input and fact checking is highly valuable.

Best,
Karla Peña.

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The complementary information offered by @wvreeven in the Confluence page was included in the deployment #1201: Commit debbaaa.

@kpenaramirez
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The Confluence duplicated version of the page can be accessed here: https://rubinobs.atlassian.net/wiki/spaces/OOD/pages/39698857/MTDome

@kpenaramirez kpenaramirez requested review from Kelks19 and removed request for kaubel September 10, 2024 18:13
@isotuela isotuela removed their request for review September 12, 2024 14:45
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I have added formatting comments, rest are clarifications on what is already mentioned.
Primary extra feedback is--

  1. consider including graphics /images to show the hardware of the dome and their locations
  2. The Dome interlock system (DIS) needs a separate page or separate dedicated section at the very least
  3. Include the aperture shutter field of view in degrees.

* Provide controlled ventilation and flushing of the dome interior with external ambient air during night operation to minimize the thermal effects on image quality.
* Facilitate maintenance of both the telescope and the Dome itself.
* Provide a controlled thermal environment during the day for preconditioning and testing.
* Be light tight during the daytime to enable testing and calibration of the telescope’s optical system.
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"light tight" -- > either light-tight or light-proof

* Provide a controlled thermal environment during the day for preconditioning and testing.
* Be light tight during the daytime to enable testing and calibration of the telescope’s optical system.
* Provide for in-situ repair and maintenance of Simonyi Survey Telescope key components.
As a result of its wide field of view the Simonyi Survey Telescope is very susceptible to stray light and requires a significant amount of optical baffling. The Dome constitutes one of stray light baffles of the overall Simonyi Survey Telescope system. The Dome enclosure is a cylindrical carousel with an aperture "biparting" shutter and light/wind screen function together to provide the stray light protection around the telescope line of sight by actively following the observing light path. The 34 vent openings with light baffling louvers have the conflicting requirements of simultaneously providing ample airflow and substantial scattered light attenuation. The rotation of the Dome is completely independent from the motion of the telescope. Since the Dome operates at non-trivial velocities while the telescope is observing smooth operation is paramount.
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  1. what do you mean by "biparting" in this context?
  2. ".. conflicting requirements.." -- > perhaps contrasting requirements? sounds less negative.
  3. " The rotation of the Dome is completely independent from the motion of the telescope"-- >
  • highlight also that despite this it will still be moving at speeds comparable to the Simonti Telescope because the wide field of view of the telescope does not give any allowance for the MTdome for delayed in-position and settle times.
  • "... independent from.." ---> " ....independent of..."
  1. "Since the Dome operates at non-trivial velocities while the telescope is observing smooth operation is paramount." --- > the point/suggestion above makes it clearer. You can remove this sentence in that case.

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it might also help to add a graphic with a view from the top to mark the position of the light baffles, vent openings, etc. (Check docushare) Alternatively, you can include the MTDome tracking screenshot from LOVE.

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Hi Kshitija,
Thank you for your comments.

  1. The shape of the shutter. That text is taken directly from the technical dome documentation.
  2. Done.
  3. Done.
  4. Done.

MTDome Main Mechanical Components
=================================

* *Azimuth Drive and Bearing "Bogie" System (ADBS)*: This is the MTDome rotation mechanism. It has five motors spread evenly along the sides of the dome, the motors imprint velocity, acceleration, and jerk values to the MTDome and have power off software limits. The encoder system allows the determination of absolute position and it is able to determine position through the entire range of motion. It has a locking pin system for mechanical interruption of movement.
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  1. "Azimuth Drive and Bearing "Bogie" System (ADBS)" ---> please bold-face this instead of italics. We use italics for filenames/paths/links etc. Anything to be highlighted should be in bold.
  2. "It has five motors spread evenly along the sides of the dome, the motors imprint velocity, acceleration, and jerk values to the MTDome and have power off software limits. "--->" It has five motors spread evenly along the sides of the dome which imprint velocity, acceleration, and jerk values to the MTDome and have power off software limits."
  3. "....have power off software limits. "--- > unclear

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  1. Done.
  2. Done.
  3. Now it reads "....The dome ADBS is fully automated via software. "

=================================

* *Azimuth Drive and Bearing "Bogie" System (ADBS)*: This is the MTDome rotation mechanism. It has five motors spread evenly along the sides of the dome, the motors imprint velocity, acceleration, and jerk values to the MTDome and have power off software limits. The encoder system allows the determination of absolute position and it is able to determine position through the entire range of motion. It has a locking pin system for mechanical interruption of movement.
* *Aperture shutter*: When fully open, the aperture shutter shall produce an 11.0 (+/-0.05) meter wide clear aperture continuous over the operational elevation range. The shutters have motorized locking mechanisms to restrain them in both the fully open and fully closed positions. The Aperture Shutter also has a locking pin system for mechanical interruption of movement.
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  1. give also the aperture in terms of sky size observed / aperture field of view (in degrees).

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Aperture shutter in bold-face

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  1. After digging around, I found there is no clarity about that value. Since the official value in the documentation is the current one, I will leave it as it is.
  2. Done.

* *Azimuth Drive and Bearing "Bogie" System (ADBS)*: This is the MTDome rotation mechanism. It has five motors spread evenly along the sides of the dome, the motors imprint velocity, acceleration, and jerk values to the MTDome and have power off software limits. The encoder system allows the determination of absolute position and it is able to determine position through the entire range of motion. It has a locking pin system for mechanical interruption of movement.
* *Aperture shutter*: When fully open, the aperture shutter shall produce an 11.0 (+/-0.05) meter wide clear aperture continuous over the operational elevation range. The shutters have motorized locking mechanisms to restrain them in both the fully open and fully closed positions. The Aperture Shutter also has a locking pin system for mechanical interruption of movement.
* *Light/Wind screen*: This component provides a rectangular clear aperture of at least 11.0 meters in the horizontal direction and at least 10.0 meters in the elevation direction. Its drive motors utilize motorized braking when decelerating under normal operations.
* *Rear Access Doors*: These doors shall provide a clear dome access through a doorway which is capable of fully opening or fully closing in less than 90 seconds.
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remove "shall"

* LCS - Louvers Control System which opens and closes the louvers.
* ThCS - Thermal Control System which is in charge of keeping the temperature of the azimuth drives and other components within requirements.

There are other software systems that the DCS reports the status for. They are called Control System to stay in line with the naming convention of the previous five but cannot be controlled via software. Those are:
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make this a subsection

* CBCS - Capacitor Banks Control System which monitors the status of the capacitor banks. There are Watcher rules in place that will raise alarms in case the CBCS reports alarming situations or in case the azimuth motion reports errors. More Watcher alarms will be added when more MTDome parts come under software control.
* CSCS - Calibration Screen Control System which monitors the status of the calibration screen hardware.
* MonCS - Monitoring Control System which monitors various parts of the dome hardware.
* OBC - Overhead Bridge Crane (Control System).
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"OBC - Overhead Bridge Crane (Control System)" ---- > "Overhead Bridge Crane (OBC)"

* CSCS - Calibration Screen Control System which monitors the status of the calibration screen hardware.
* MonCS - Monitoring Control System which monitors various parts of the dome hardware.
* OBC - Overhead Bridge Crane (Control System).
* RAD - Rear Access Door (Control System).
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"RAD - Rear Access Door (Control System)" ---> "Rear Access Door (RAD)"

The DCS includes the following software subsystems:

* AMCS - Azimuth Motion Control System which rotates the dome.
* LWSCS - Light and Wind Screen Control System which will move up and down the Light and Wind Screen once it has been installed and placed under software control.
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"..which will move up and down the Light and Wind Screen .." --> rephrase


* CBCS - Capacitor Banks Control System which monitors the status of the capacitor banks. There are Watcher rules in place that will raise alarms in case the CBCS reports alarming situations or in case the azimuth motion reports errors. More Watcher alarms will be added when more MTDome parts come under software control.
* CSCS - Calibration Screen Control System which monitors the status of the calibration screen hardware.
* MonCS - Monitoring Control System which monitors various parts of the dome hardware.
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"....various parts of the dome hardware." --> Perhaps explicitly mention which parts

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Hi Kshitija,
Thank you for your comments. I have added all the formatting comments, and most of the clarifications requested.
Regarding the figures, there is a new figure showing the overall MTDome structure. There is going graphics /images showing the subsystems and cabinets on a separate ticket.

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except for two mior things - ready to merge ! Looks really good !

* Provide a controlled thermal environment during the day for preconditioning and testing.
* Be light-tight during the daytime to enable testing and calibration of the telescope’s optical system.
* Provide for in-situ repair and maintenance of Simonyi Survey Telescope key components.
As a result of its wide field of view the Simonyi Survey Telescope is very susceptible to stray light and requires a significant amount of optical baffling. The Dome constitutes one of stray light baffles of the overall Simonyi Survey Telescope system. The Dome enclosure is a cylindrical carousel with an aperture "biparting" shutter and light/wind screen function together to provide the stray light protection around the telescope line of sight by actively following the observing light path. The 34 vent openings with light baffling louvers have the contrasting requirements of simultaneously providing ample airflow and substantial scattered light attenuation. The rotation of the Dome is completely independent of the motion of the telescope althought at comparable velocities (dome maximum velocity is 0.6 deg/s).
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"... telescope althought at ..." ---> ".. telescope although ..."

The MTDome Engineering User Interface (EUI) is not available yet and it is currently under development by the dome vendor (EIE).


Procedures
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I think procedures should be removed !

@kpenaramirez kpenaramirez force-pushed the tickets/SITCOM-1475 branch 2 times, most recently from e145c13 to 5721b47 Compare October 15, 2024 18:45
@kpenaramirez kpenaramirez merged commit 8515d3b into main Oct 15, 2024
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@kpenaramirez kpenaramirez deleted the tickets/SITCOM-1475 branch October 15, 2024 19:05
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kpenaramirez commented Oct 15, 2024

Thank you all for your comments and suggestions. Now this MTDome front-page will reside on our obs-doc documentation.

Best,
Karla.

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