status of the full scale 'Π of the sky' project plan of the talk presentation of the new...

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Status of the full scale Status of the full scale ' ' Π Π of the Sky' project of the Sky' project Plan of the talk Plan of the talk Presentation of the new version Robot Telescope Presentation of the new version Robot Telescope Comparison Comparison between between the new construction the new construction and and the the old concept old concept D rive of axis rive of axis Absolute Absolute encoders encoders Plan of the future work Plan of the future work

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Page 1: Status of the full scale 'Π of the Sky' project Plan of the talk Presentation of the new version Robot Telescope Presentation of the new version Robot

Status of the full scale Status of the full scale ''ΠΠ of the Sky' project of the Sky' project

Plan of the talkPlan of the talk

Presentation of the new version Robot Telescope Presentation of the new version Robot Telescope

Comparison Comparison betweenbetween the new construction the new construction andand the the old conceptold concept

DDrive of axisrive of axis

AbsoluteAbsolute encoders encoders

Plan of the future workPlan of the future work

Page 2: Status of the full scale 'Π of the Sky' project Plan of the talk Presentation of the new version Robot Telescope Presentation of the new version Robot

Presentation of the new version Robot Presentation of the new version Robot TelescopeTelescope

On this film you can easily notice that our construction is base on parallactic mountIt has two axis. The first one is parallel to axis of the earth called declination axis and the second one perpendicular to axis of the earth called hour axis. Besides this construction has additional option. There is possibility of deflection of the cameras.

Page 3: Status of the full scale 'Π of the Sky' project Plan of the talk Presentation of the new version Robot Telescope Presentation of the new version Robot

Comparison Comparison betweenbetween the new construction the new construction and theand the old concept old concept

RA (Φ=800mm)

RA (Φ=400mm)

setting fixation inside

setting fixation outside

Concept from the last year

Recent design that is just under construction

•The picture preserves proportion of the real models

•We managed to decrease the size of the biggest wheel by half of size

(idea from J. Grygorczuk)

Page 4: Status of the full scale 'Π of the Sky' project Plan of the talk Presentation of the new version Robot Telescope Presentation of the new version Robot

Deflection of the camerasDeflection of the cameras

Deflection to outside – old idea

Deflection to inside – new idea given by J.Grygorczuk

First we have changed the mechanism of deflecting cameras. Now the turn inside instead of outside. But overall field of view of the cameras remains the same.

Page 5: Status of the full scale 'Π of the Sky' project Plan of the talk Presentation of the new version Robot Telescope Presentation of the new version Robot

290 mm

(in old concept was 175 mm)

The next important change was to move the cameras outside of the wheel. Unfortunately it caused the centre of mass to move out of the geometrical centre of the construction but fortunately we reduced the size by one half to 400mm

Page 6: Status of the full scale 'Π of the Sky' project Plan of the talk Presentation of the new version Robot Telescope Presentation of the new version Robot

Ring of steel for Dec

Ring of steel for RAStepper motor for RA

Stepper motor for RA

Redactor – harmonic drive for RA

Redactor – harmonic drive for RA

Page 7: Status of the full scale 'Π of the Sky' project Plan of the talk Presentation of the new version Robot Telescope Presentation of the new version Robot

Harmonic driveHarmonic drive

The harmonic Drive is generally made up of just three components: wave generator, a flexipline and a circular spline

Page 8: Status of the full scale 'Π of the Sky' project Plan of the talk Presentation of the new version Robot Telescope Presentation of the new version Robot

Absolute encodersAbsolute encoders

Encoders for DEC

Encoders for RA

•13 bit multi-turn Absolute Encoders = 8192 counts per revolution

Page 9: Status of the full scale 'Π of the Sky' project Plan of the talk Presentation of the new version Robot Telescope Presentation of the new version Robot

Plan of future workPlan of future work

•The finish of the first robotic telescope is planning on August

•Production of all other robotic end send in Canaries Island is planning on October