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  • Sibylle Fröhlich, WFS 1

    Digital Astrophotography: Digital Astrophotography:

    Low Cost Imaging for EverybodyLow Cost Imaging for Everybody

    Sibylle FröhlichSibylle Fröhlich & Gert Gottschalk & Gert Gottschalk WFS Berlin / TVS LivermoreWFS Berlin / TVS Livermore

    18. April 200318. April 2003

  • Sibylle Fröhlich, WFS 2

    Digital CamerasDigital Cameras FeaturesFeatures:: •• Good sensitivityGood sensitivity •• High resolution (MHigh resolution (M--Pixel)Pixel) •• Immediate feedbackImmediate feedback •• No waste of filmNo waste of film •• Digital image processingDigital image processing •• ColorColor

  • Sibylle Fröhlich, WFS 3

    Digital CamerasDigital Cameras

    DisadvantagesDisadvantages:: •• Price for advanced models with Price for advanced models with

    high resolution and manual high resolution and manual featuresfeatures

    •• No long time exposures (less No long time exposures (less than 30sec.)than 30sec.)

  • Sibylle Fröhlich, WFS 4

    Digital CamerasDigital Cameras Preferred camera featuresPreferred camera features :: •• Manual function control (exposure, fManual function control (exposure, f--

    stop, focus, white balance)stop, focus, white balance) •• Remote shutter release (IR, cable)Remote shutter release (IR, cable) •• Matching eyepiecesMatching eyepieces •• Threaded ring to connect adaptersThreaded ring to connect adapters •• A variety of adapter ringsA variety of adapter rings

  • Sibylle Fröhlich, WFS 5

    Digital CamerasDigital Cameras

    Best oBest obbjjeeccttss :: •• Moon (+ eclipses)Moon (+ eclipses) •• SSun, (+ eclipses)un, (+ eclipses) •• PlanetPlanetss •• Planets / Moon conjunctionsPlanets / Moon conjunctions

  • Sibylle Fröhlich, WFS 6

    Digital cameras use Digital cameras use afocal afocal projectionprojection

  • Sibylle Fröhlich, WFS 7

    NikonNikon CoolpixCoolpix 950950

    SpecificationsSpecifications::

    •• 1600 x 1200 1600 x 1200 ppixelixel resolutionresolution •• 2,11 2,11 mmegapixelegapixel totaltotal •• 3 x 3 x optiopticalcal zzoomoom (1,25 x (1,25 x –– 2,5 x) 7 2,5 x) 7 –– 21 mm21 mm •• ff--stopstop 1:2,6 1:2,6 –– 1:41:4 •• ShutterShutter 8 sec 8 sec –– 1/500sec (manu1/500sec (manualal)) •• Shutter or aperture manual, focus manualShutter or aperture manual, focus manual •• Manual flash disableManual flash disable

  • Sibylle Fröhlich, WFS 8

    CanonCanon PowershotPowershot G1G1

    SpecificationsSpecifications ::

    •• 2048 x 1536 2048 x 1536 ppixel ixel resolutionresolution •• 3.34 3.34 mmegapixelegapixel totaltotal •• 3 x 3 x optiopticalcal zzoomoom 7 7 –– 21 mm 21 mm ((34 34 –– 102 mm102 mm)) •• ff--stopstop 1:2 1:2 –– 1:81:8 •• ShutterShutter 8 sec 8 sec –– 1/1000sec (manu1/1000sec (manuaal)l) •• Shutter / aperture / focus manual controlShutter / aperture / focus manual control •• Manual flash disableManual flash disable

  • Sibylle Fröhlich, WFS 9

    NikonNikon CoolpixCoolpix 950950

  • Sibylle Fröhlich, WFS 11

    NikonNikon CoolpixCoolpix 950950

  • Sibylle Fröhlich, WFS 12

    Nikon Nikon CoolpixCoolpix 950950

  • Sibylle Fröhlich, WFS 13

    CanonCanon PowershotPowershot G1G1

  • Sibylle Fröhlich, WFS 16

    CanonCanon PowershotPowershot G1G1

  • Sibylle Fröhlich, WFS 17

    CanonCanon PowershotPowershot G1G1

  • Sibylle Fröhlich, WFS 18

    CanonCanon PowershotPowershot G1G1

  • Sibylle Fröhlich, WFS 19

    The Winter Moon with Nikon The Winter Moon with Nikon CoolpixCoolpix

    AtAt –– 8°C (!!)8°C (!!) = 17,6 = 17,6 °°FF 11. Februar11. Februaryy 2003 , 22:072003 , 22:07 Nikon Nikon CoolPixCoolPix 1/125 sec , f 4,81/125 sec , f 4,8

  • Sibylle Fröhlich, WFS 20

    NikonNikon CoolpixCoolpix 950 : Moon 17. May 2002950 : Moon 17. May 2002

  • Sibylle Fröhlich, WFS 21

    NikonNikon CoolpixCoolpix 950 : Moon 17. May 2002950 : Moon 17. May 2002

  • Sibylle Fröhlich, WFS 22

    CanonCanon PowershotPowershot G1 : Moon 24. Oct.01G1 : Moon 24. Oct.01

  • Sibylle Fröhlich, WFS 23

    CanonCanon PowershotPowershot G1 : Moon 22. May 02G1 : Moon 22. May 02

  • Sibylle Fröhlich, WFS 24

    CanonCanon PowershotPowershot G1 : Moon 22. May 02G1 : Moon 22. May 02

  • Sibylle Fröhlich, WFS 25

    NikonNikon CoolpixCoolpix 950 : Sun July 29. 2002950 : Sun July 29. 2002

  • Sibylle Fröhlich, WFS 26

    NikonNikon CoolpixCoolpix 950 : Sun July 28. 2002950 : Sun July 28. 2002

  • Sibylle Fröhlich, WFS 27

    NikonNikon CoolpixCoolpix 950 : Sun July 29. 2002950 : Sun July 29. 2002

  • Sibylle Fröhlich, WFS 28

    NikonNikon CoolpixCoolpix 950 : Sun Aug. 18. 2002950 : Sun Aug. 18. 2002

  • Sibylle Fröhlich, WFS 29

    CanonCanon PowershotPowershot G1 : SunG1 : Sun

  • Sibylle Fröhlich, WFS 30

    NikonNikon CoolpixCoolpix 950 : Planets May 16. 2002950 : Planets May 16. 2002

    MoonMoon, Saturn, Jupiter, Saturn, Jupiter

  • Sibylle Fröhlich, WFS 31

    NikonNikon CoolpixCoolpix 950 : Planets June 4. 2002950 : Planets June 4. 2002

    Jupiter, SaturnJupiter, Saturn

  • Sibylle Fröhlich, WFS 32

    NikonNikon CoolpixCoolpix 950 : Planets Dec. 2. 2002950 : Planets Dec. 2. 2002

    MoonMoon, Venus, Mars, Venus, Mars

  • Sibylle Fröhlich, WFS 33

    WebcamsWebcams FeaturesFeatures:: •• Low price (

  • Sibylle Fröhlich, WFS 34

    WebcamsWebcams DisadvantagesDisadvantages :: •• Wiring at the telescopeWiring at the telescope •• Power supplyPower supply, PC, , PC, CCamera amera •• Big filesBig files •• No long time exposures (cooling!)No long time exposures (cooling!) •• Medium resolution (640 x 480)Medium resolution (640 x 480)

  • Sibylle Fröhlich, WFS 35

    WebcamsWebcams Camera / PC featuresCamera / PC features :: •• Webcam Webcam with CCD chip (vs. CMOS)with CCD chip (vs. CMOS) •• Laptop Laptop withwith USB PortUSB Port •• Removable camera lensRemovable camera lens •• IR IR block filterblock filter!! •• Telescope aTelescope adaptdapteerr •• Free processing softwareFree processing software

  • Sibylle Fröhlich, WFS 36

    WebcamsWebcams BBestest ObjeObjectscts:: •• PlanetPlanetss •• SSunspots unspots (detail)(detail) •• MoMoon (crater detail)on (crater detail)

  • Sibylle Fröhlich, WFS 37

    PhilipsPhilips WebcamWebcam Selection TableSelection Table

    http://http://homepagehomepage..ntlworldntlworld..comcom//molynedmolyned/web/web--camerascameras.htm.htm

  • Sibylle Fröhlich, WFS 38

    Digital imaging equipmentDigital imaging equipment

    Best choice for planetary Best choice for planetary webcamwebcam imagingimaging: Philips : Philips ToUCamToUCam 740k740k

  • Sibylle Fröhlich, WFS 39

    Digital imaging equipmentDigital imaging equipment

  • Sibylle Fröhlich, WFS 40

    Image processing (Image processing (RegistaxRegistax))

    http://http://aberratoraberrator..astronomyastronomy..netnet//registaxregistax//

  • Sibylle Fröhlich, WFS 41

    Image processing (Image processing (RegistaxRegistax))

  • Sibylle Fröhlich, WFS 42

    Image processing (Image processing (RegistaxRegistax))

  • Sibylle Fröhlich, WFS 43

    Image processing (Image processing (RegistaxRegistax))

    Stacking of video images and wavelet processing of sum imageStacking of video images and wavelet processing of sum image

  • Sibylle Fröhlich, WFS 44

    SaturnSaturn

    8. 8. Feb.Feb. 2003 , 21:38 UT 2003 , 21:38 UT 9. 9. Feb.Feb. 2003 , 22:41 UT2003 , 22:41 UT

    8“ Newton f5, 3 x 8“ Newton f5, 3 x BBarlowarlow, , ToUCamToUCam + IR, 1/25 sec , + IR, 1/25 sec , 10 10 imagesimages averaged with ‘averaged with ‘GiottoGiotto’ software’ software

  • Sibylle Fröhlich, WFS 45

    SaturnSaturn

    11. Feb11. Feb.. 2003, 22:17UT 2003, 22:17UT 8“ Newton f5, 3 x Barlow, 8“ Newton f5, 3 x Barlow, ToUCamToUCam + IR, 1/25 sec , + IR, 1/25 sec , 43 43 images averaged / processed withimages averaged / processed with ‘‘RegistaxRegistax’’

  • Sibylle Fröhlich, WFS 46

    SaturnSaturn

    ToUCamToUCam 1/25 sec1/25 sec 18. Feb18. Feb.. 2003, 21:24UT 2003, 21:24UT 22. Feb22. Feb.. 2003, 20:14UT 2003, 20:14UT 27 27 images processed withimages processed with Registax Registax 22 22 images processed withimages processed with RegistaxRegistax

  • Sibylle Fröhlich, WFS 47

    JupiterJupiter

    01:07 UT 01:11 UT 01:07 UT 01:11 UT 01:26 UT01:26 UT

    10. Februar 2003 10. Februar 2003

    8“ Newton f5, 3 x Barlow, 8“ Newton f5, 3 x Barlow,

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