Part 6 | Comets Images

Last Update: 19 April 2002

Part 1 | The Canon Powershot G1 Camera
Part 2 | First Astroimages with G1
Part 3 | Lunar Images
Part 4 | Trying Deepsky
Part 5 | Imaging the Planets
Part 6 | Comets

IKEYA-ZHANG C/2002/C1

A PS39 Webcam image of Ikeya Zhang

• Date: 10 April 2002 / Start 1937 UT
• Location: Schwedeneck
• Camera: PS 39 Webcam on 150/750mm Newton
• Tracking: Yes on GP
• Integration time: 20*100*0.25 sec (=500sec)
• Other Info: High Amplification, Gamma corrected
• Image processed with IRIS

• Date: 22 March 2002 / ca 2030 CET
• Location: Schwedeneck
• Camera: Canon G1 Powershot / f_equiv=100mm (1:2.5)
• Tracking: Yes on GP
• Integration time: 13 * 8 sec (= 104 sec)
• Other Info: ISO 400; Highest resolution; No compression
• I processed this image with GIOTTO ... this time it worked ?!?!?
• Stars of 9 mag are visible on this image (checked with XEphem).

• Date: 20 March 2002 / ca 2010 CET
• Location: Kiel Kronshagen Observatory
• Camera: Canon G1 Powershot / f_equiv=100mm (1:2.5)
• Tracking: No
• Integration time: 7 * 8 sec (= 56 sec)
• Other Info: ISO 400; Highest resolution; No compression

This is the first IKEYA-ZHANG image with the G1. I took 7 images at 3.3 MegaPixels in RAW format with equivalent to 35mm film at f=100mm. Next step was converting these RAW formats to TIF format with the CANON propriety program. Then I cut the 640*480 center portion (IRFANVIEW or PAINTSHOP pro 5.0) and stored them as BMP. I converted them to black&white fits luminescence images and registered and stacked them using R.Berry's AIP4WIN. This is the result.

I tried to do the work with the GIOTTO program to get a colour foto, but somehow it did not work ...

8 seconds are long enough to make the stars and the comet of course to produce trails as you see on the image.

All photos are Copyright © of C.Petermann DF9CY

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