First Light at Prompt7 (First Light at Prompt7 (Chart32Chart32))ChChilean ilean AAdvanced dvanced RRemote emote TTelescope 32“elescope 32“

operating at Cerro Tololo/Chile (CTIO)operating at Cerro Tololo/Chile (CTIO)

March 04, 2013 Johannes Schedler

ContentContentTeamTeam

Selection of LocationSelection of Location

Project historyProject history

Enclosure/DomeEnclosure/Dome

Telescope SetupTelescope Setup

Control philosophy and software Control philosophy and software

First resultsFirst results

LinksLinks

Our Chart32 TeamOur Chart32 Team Philipp KellerPhilipp Keller UNC (host) UNC (host) http://unc.edu/

http://astrooptik.com Dan Reichart Dan Reichart

Joshua HaislipJoshua Haislip

Aaron LaCluyzeAaron LaCluyze

Justin MooreJustin Moore

Konstantin BuchholdKonstantin Buchhold Johannes Schedler Johannes Schedlerhttp://www.spacephotos.de/ http://panther-observatory.com

Bernd Flach-Wilken Bernd Flach-Wilken http://www.spiegelteam.de/

Volker Wendel Volker Wendel http://www.spiegelteam.de/

Selection of Location at CTIOSelection of Location at CTIOGeographical location > 30° southGeographical location > 30° south

Elevation > high Elevation > high

Sky conditions ++Sky conditions ++

Darkness ++Darkness ++

Humidity > lowHumidity > low

Seeing ++Seeing ++

Clear nights ++Clear nights ++

Infrastructure ++Infrastructure ++

Costs > sharedCosts > shared

Decision for CTIO/UNC ChileDecision for CTIO/UNC ChileReliable infrastructureReliable infrastructure

Optimal sky conditions at 2200 mOptimal sky conditions at 2200 m

Continuous support availableContinuous support available

Dome construction done by UNCDome construction done by UNC

Operating costs taken by UNCOperating costs taken by UNC

Shared use between UNC and usShared use between UNC and us

Dark time for our teamDark time for our teamBright time for UNCBright time for UNC

Override by UNC any time by UNCOverride by UNC any time by UNCin case of special events (GRB)in case of special events (GRB)

Place of Chart32Place of Chart32

4 m Blanco Telescope

Weather conditionsWeather conditionsclear nights at CTIOclear nights at CTIO

Sky conditions at CTIOSky conditions at CTIOtypical mag 21.5-22typical mag 21.5-22

Project HistoryProject History20072007 First contacts in Chile with support of Daniel Verschatse:First contacts in Chile with support of Daniel Verschatse:

Cerro Armazones, then CTIO Cerro Armazones, then CTIO (Cerro Tololo Inter-American Observatory)(Cerro Tololo Inter-American Observatory)

20082008 „ „Go“ from UNC (University of North Carolina) at CTIOGo“ from UNC (University of North Carolina) at CTIO

20092009 Contract signed with UNC in March, fund raisingContract signed with UNC in March, fund raising dome construction plans prepared dome construction plans prepared

20102010 Final drawings ready, start of bid processFinal drawings ready, start of bid process

20112011 Erection of dome building (March-April)Erection of dome building (March-April)

Project HistoryProject History20122012 March: shipment of telescope equipment to ChileMarch: shipment of telescope equipment to Chile

20122012 November: commissioning (Philipp and Konstantin) >first light! November: commissioning (Philipp and Konstantin) >first light!

20132013 February: CCD camera back from repair, optimization February: CCD camera back from repair, optimization full remote operation and control possible full remote operation and control possible

EnclosureEnclosureDome Diameter 5 mDome Diameter 5 m

Avoid ground seeing:Avoid ground seeing:Telescope height 4.5 m from floorTelescope height 4.5 m from floor

Avoid dome seeing:Avoid dome seeing:Forced ventilation up to 5 m³/secForced ventilation up to 5 m³/sec

OpticsOpticsdesigned by Philipp Kellerdesigned by Philipp Keller

Classical cassegrainClassical cassegrain

Mirror: 0.81m SitallMirror: 0.81m Sitall

Focal length: 5.6 mFocal length: 5.6 m

3-lens Wynne corrector3-lens Wynne corrector

Corrected field: 150 mm (diffraction limited)Corrected field: 150 mm (diffraction limited)

OTAOTA

Open truss designOpen truss design

Robotic dust cover (mirror + baffle)Robotic dust cover (mirror + baffle)

Focusing by secondary mirrorFocusing by secondary mirror

Lasalle mirror supportLasalle mirror support

Remote collimationRemote collimation

MountMount

Equatorial fork mountEquatorial fork mount

Torque motors 200 Nm both axesTorque motors 200 Nm both axes

Encoder resolution 0.01 arc secEncoder resolution 0.01 arc sec

Pointing accuracy <5 arc secPointing accuracy <5 arc sec

Tracking accuracy <0.1 arc sec (5min)Tracking accuracy <0.1 arc sec (5min)

All cables through mountAll cables through mount

CCDCCD

Imager: FLI-16803 ProlineImager: FLI-16803 Proline

4096x4096 at 9 um4096x4096 at 9 um

8-pos FLI 50x50mm Filter wheel8-pos FLI 50x50mm Filter wheel

Resolution: 0.33“/pixelResolution: 0.33“/pixel

Field: 22.3‘ x 22.3‘ Field: 22.3‘ x 22.3‘

Guider: Lodestar at 49mm off axisGuider: Lodestar at 49mm off axis

CTIO

FirewallCTIO

Firewall

DatacenterLe SerenaDatacenterLe Serena

MicrowaveAntenna

MicrowaveAntenna

Internet

MicrowaveAntenna

MicrowaveAntenna

DatacenterCTIO

DatacenterCTIO

FX/TX Converter

FX/TX ConverterFibre Optic Link

Ethernetswitch

Ethernetswitch

IP WebcamIP Webcam

WirelessRouter

WirelessRouter

PC2Backup

PC2Backup

PC1Control

PC1Control

IP Boot ManagerIP Boot

Manager

IP Power switch

IP Power switch

CCD Powerstrip

CCD Powerstrip

TelescopeControllerTelescopeController

Dom

e LightD

ome Light

ScopeDomeController

ScopeDomeController

Dome Rails and ShutterDome Rails and Shutter

110V 60Hz

Ethernet

Scope CoversScope Covers

Dome FansDome Fans

WiFi Antenna

Data & Power Connections in Data & Power Connections in CHART32CHART32

SoftwareSoftware

Sequence Autoslew

Maxim DL

The Skyoptional

CCD

Auxiliaries:ScopedomeWatchdogSMS alert

Pinpoint

Developed by Philipp KellerDeveloped by Philipp Keller

Includes safety, dome and ventilation controlIncludes safety, dome and ventilation control

All sky pointing modelAll sky pointing model

Scheduler for automatedScheduler for automatedimagingimaging

MLPT tracking allows MLPT tracking allows unguided tracking up to unguided tracking up to 20 min20 min

Control via Autoslew/PinpointControl via Autoslew/Pinpoint

Deviation before Deviation before MLPT

All sky pointing model includedAll sky pointing model included

Scheduler for automated imagingScheduler for automated imaging

Control via Autoslew/PinpointControl via Autoslew/Pinpoint

First light image First light image (Nov 2012)(Nov 2012)

NGC253NGC253

10 min L10 min L

3 min RGB3 min RGB

100% crop100% crop

NGC3372 NB 460 min

FutureFuture

• High resolution planetary imaging with moveable pick-up mirrorHigh resolution planetary imaging with moveable pick-up mirror

• Cooperation with professional astronomersCooperation with professional astronomers

• Very long deep exposuresVery long deep exposures

LinksLinks

Chart32 Homepage http://chart32.deChart32 Homepage http://chart32.de

Philipp Keller Homepage http://astrooptik.comPhilipp Keller Homepage http://astrooptik.com

ASA Astrosysteme Austria http://www.astrosysteme.at/ASA Astrosysteme Austria http://www.astrosysteme.at/(Partnership with Philipp Keller)(Partnership with Philipp Keller)

Cerro Tololo Inter-American Observatory (CTIO) http://www.ctio.noao.edu/Cerro Tololo Inter-American Observatory (CTIO) http://www.ctio.noao.edu/

Johannes Schedler Homepage Johannes Schedler Homepage http://panther-observatory.comhttp://panther-observatory.com

Bernd Flach-Wilken/Volker Wendel Homepage Bernd Flach-Wilken/Volker Wendel Homepage http://www.spiegelteam.de/http://www.spiegelteam.de/

Konstantin Buchhold Homepage Konstantin Buchhold Homepage http://www.spacephotos.de/http://www.spacephotos.de/