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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
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Sibylle Fröhlich, WFS 2
Digital CamerasDigital CamerasFeaturesFeatures::•• 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
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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.)
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Sibylle Fröhlich, WFS 4
Digital CamerasDigital CamerasPreferred 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
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Sibylle Fröhlich, WFS 5
Digital CamerasDigital Cameras
Best oBest obbjjeeccttss ::•• Moon (+ eclipses)Moon (+ eclipses)•• SSun, (+ eclipses)un, (+ eclipses)•• PlanetPlanetss•• Planets / Moon conjunctionsPlanets / Moon conjunctions
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Sibylle Fröhlich, WFS 6
Digital cameras use Digital cameras use afocal afocal projectionprojection
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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
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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
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Sibylle Fröhlich, WFS 9
NikonNikon CoolpixCoolpix 950950
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Sibylle Fröhlich, WFS 11
NikonNikon CoolpixCoolpix 950950
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Sibylle Fröhlich, WFS 12
Nikon Nikon CoolpixCoolpix 950950
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Sibylle Fröhlich, WFS 13
CanonCanon PowershotPowershot G1G1
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Sibylle Fröhlich, WFS 16
CanonCanon PowershotPowershot G1G1
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Sibylle Fröhlich, WFS 17
CanonCanon PowershotPowershot G1G1
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Sibylle Fröhlich, WFS 18
CanonCanon PowershotPowershot G1G1
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Sibylle Fröhlich, WFS 19
The Winter Moon with Nikon The Winter Moon with Nikon CoolpixCoolpix
AtAt –– 8°C (!!)8°C (!!) = 17,6 = 17,6 °°FF11. Februar11. Februaryy 2003 , 22:072003 , 22:07Nikon Nikon CoolPixCoolPix1/125 sec , f 4,81/125 sec , f 4,8
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Sibylle Fröhlich, WFS 20
NikonNikon CoolpixCoolpix 950 : Moon 17. May 2002950 : Moon 17. May 2002
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Sibylle Fröhlich, WFS 21
NikonNikon CoolpixCoolpix 950 : Moon 17. May 2002950 : Moon 17. May 2002
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Sibylle Fröhlich, WFS 22
CanonCanon PowershotPowershot G1 : Moon 24. Oct.01G1 : Moon 24. Oct.01
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Sibylle Fröhlich, WFS 23
CanonCanon PowershotPowershot G1 : Moon 22. May 02G1 : Moon 22. May 02
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Sibylle Fröhlich, WFS 24
CanonCanon PowershotPowershot G1 : Moon 22. May 02G1 : Moon 22. May 02
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Sibylle Fröhlich, WFS 25
NikonNikon CoolpixCoolpix 950 : Sun July 29. 2002950 : Sun July 29. 2002
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Sibylle Fröhlich, WFS 26
NikonNikon CoolpixCoolpix 950 : Sun July 28. 2002950 : Sun July 28. 2002
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Sibylle Fröhlich, WFS 27
NikonNikon CoolpixCoolpix 950 : Sun July 29. 2002950 : Sun July 29. 2002
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Sibylle Fröhlich, WFS 28
NikonNikon CoolpixCoolpix 950 : Sun Aug. 18. 2002950 : Sun Aug. 18. 2002
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Sibylle Fröhlich, WFS 29
CanonCanon PowershotPowershot G1 : SunG1 : Sun
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Sibylle Fröhlich, WFS 30
NikonNikon CoolpixCoolpix 950 : Planets May 16. 2002950 : Planets May 16. 2002
MoonMoon, Saturn, Jupiter, Saturn, Jupiter
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Sibylle Fröhlich, WFS 31
NikonNikon CoolpixCoolpix 950 : Planets June 4. 2002950 : Planets June 4. 2002
Jupiter, SaturnJupiter, Saturn
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Sibylle Fröhlich, WFS 32
NikonNikon CoolpixCoolpix 950 : Planets Dec. 2. 2002950 : Planets Dec. 2. 2002
MoonMoon, Venus, Mars, Venus, Mars
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Sibylle Fröhlich, WFS 33
WebcamsWebcamsFeaturesFeatures::•• Low price (<$100)Low price (<$100)•• Good sensitivityGood sensitivity•• Allows averaging lots of imagesAllows averaging lots of images•• No waste of filmNo waste of film•• Digital image processingDigital image processing•• ColorColor
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Sibylle Fröhlich, WFS 34
WebcamsWebcamsDisadvantagesDisadvantages ::•• 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)
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Sibylle Fröhlich, WFS 35
WebcamsWebcamsCamera / 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
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Sibylle Fröhlich, WFS 36
WebcamsWebcamsBBestest ObjeObjectscts::•• PlanetPlanetss•• SSunspots unspots (detail)(detail)•• MoMoon (crater detail)on (crater detail)
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Sibylle Fröhlich, WFS 37
PhilipsPhilips WebcamWebcam Selection TableSelection Table
http://http://homepagehomepage..ntlworldntlworld..comcom//molynedmolyned/web/web--camerascameras.htm.htm
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Sibylle Fröhlich, WFS 38
Digital imaging equipmentDigital imaging equipment
Best choice for planetary Best choice for planetary webcamwebcam imagingimaging: Philips : Philips ToUCamToUCam 740k740k
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Sibylle Fröhlich, WFS 39
Digital imaging equipmentDigital imaging equipment
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Sibylle Fröhlich, WFS 40
Image processing (Image processing (RegistaxRegistax))
http://http://aberratoraberrator..astronomyastronomy..netnet//registaxregistax//
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Sibylle Fröhlich, WFS 41
Image processing (Image processing (RegistaxRegistax))
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Sibylle Fröhlich, WFS 42
Image processing (Image processing (RegistaxRegistax))
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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
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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
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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’’
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Sibylle Fröhlich, WFS 46
SaturnSaturn
ToUCamToUCam 1/25 sec1/25 sec18. 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
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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, ToUCamToUCam + IR, 1/50 sec , + IR, 1/50 sec , 12 12 images averaged with images averaged with GiottoGiotto
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Sibylle Fröhlich, WFS 48
Jupiter 12. Feb. 2003Jupiter 12. Feb. 2003
EuEuropa ropa IoIo00:58 UT und 01:27 UT00:58 UT und 01:27 UT8“ Newton f5, 3 x Barlow, 8“ Newton f5, 3 x Barlow, ToUCamToUCam + IR, 1/33 sec + IR, 1/33 sec ca.25 ca.25 images processed withimages processed with Registax Registax
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Sibylle Fröhlich, WFS 49
Jupiter am 27. Feb. 2003Jupiter am 27. Feb. 2003
00:04 UT 00:04 UT 8“ Newton f5, 3 x Barlow, 8“ Newton f5, 3 x Barlow, ToUCamToUCam + IR, 1/33 sec + IR, 1/33 sec ca.25 ca.25 images processed withimages processed with Registax Registax
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Sibylle Fröhlich, WFS 50
Jupiter am 2. Mar. 2003Jupiter am 2. Mar. 2003
~20~20 images processed withimages processed with Registax Registax
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Sibylle Fröhlich, WFS 51
Jupiter 3. Mar. 2003Jupiter 3. Mar. 2003
~20~20 images processed withimages processed with Registax Registax
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Sibylle Fröhlich, WFS 52
Jupiter 4. Mar. 2003Jupiter 4. Mar. 2003
31 31 images processed withimages processed with Registax Registax
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Sibylle Fröhlich, WFS 53
Jupiter 15. Mar. 2003Jupiter 15. Mar. 2003
47 47 images processed withimages processed with Registax Registax
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Sibylle Fröhlich, WFS 54
Jupiter Mar. 22. 2003Jupiter Mar. 22. 2003
23, 87, 49 23, 87, 49 imagesimages averaged withaveraged with Registax Registax
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Sibylle Fröhlich, WFS 55
Sunspot July 29. 2002 Sunspot July 29. 2002 (by M.(by M.KiehlKiehl, WFS), WFS)
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Sibylle Fröhlich, WFS 56
Sunspot July 30. 2002 Sunspot July 30. 2002 (by M.(by M.KiehlKiehl, WFS), WFS)
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Sibylle Fröhlich, WFS 57
Sunspot Aug. 20. 2002 Sunspot Aug. 20. 2002 (by M.(by M.KiehlKiehl, WFS), WFS)
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Sibylle Fröhlich, WFS 58
Sunspot Aug. 23. 2002 Sunspot Aug. 23. 2002 (by M.(by M.KiehlKiehl, WFS), WFS)
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Sibylle Fröhlich, WFS 60
Nikon vs. Nikon vs. ToUCamToUCam
Nikon 1/60 sec Nikon 1/60 sec Feb .Feb .11. 2003 11. 2003 ToUCamToUCam 1/250 sec1/250 sec
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Sibylle Fröhlich, WFS 61
Nikon vs. Nikon vs. ToUCamToUCam
Nikon 1/60 sec Nikon 1/60 sec ToUCamToUCam 1/250 sec1/250 secFeb. Feb. 11. 200311. 2003
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Sibylle Fröhlich, WFS 62
Copernicus SchillerCopernicus Schiller
Feb. Feb. 11. 2003 M11. 2003 Marar. 16.. 16. 2003 2003 8“ Newton f5, 3 x Barlow, 8“ Newton f5, 3 x Barlow, ToUCamToUCam + IR, 1/100 sec+ IR, 1/100 sec27 27 imagesimages averaged with averaged with Registax Registax 6 6 images averaged with images averaged with Registax Registax
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Sibylle Fröhlich, WFS 63
Gassendi Vallis SchröteriGassendi Vallis Schröteri
Mar. Mar. 15. 2003, 8“ Newton f5, 3 x Barlow, 15. 2003, 8“ Newton f5, 3 x Barlow, ToUCamToUCam + IR, 1/100 sec+ IR, 1/100 sec5 5 imagesimages averaged with averaged with RegistaxRegistax 6 6 imagesimages averaged with averaged with Registax Registax
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Sibylle Fröhlich, WFS 65
PlatoPlato
Feb. Feb. 11. 2003 , 8“ Newton f5, 3 x Barlow, 11. 2003 , 8“ Newton f5, 3 x Barlow, ToUCamToUCam + IR, 1/100 sec+ IR, 1/100 sec6 6 imagesimages average with average with Registax Registax
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Sibylle Fröhlich, WFS 66
ClaviusClavius
Feb. Feb. 11.11. 2003 , 8“ Newton f5, 3 x Barlow, 2003 , 8“ Newton f5, 3 x Barlow, ToUCamToUCam + IR, 1/100 sec+ IR, 1/100 sec6 6 imagesimages average with average with Registax Registax
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Sibylle Fröhlich, WFS 67
Thank You!Thank You!
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Sibylle Fröhlich, WFS 68
AG Astrofotografie der Wilhelm Foerster Sternwarte e.V.
http://www.be.schule.de/schulen/wfs/pages/AGAstrofoto/INDEX.HTM