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Friday, December 05, 2008

Sensitivity of DSLR EOS 350 DA


Good evening Deep Sky watchers,
I always wanted to check the sensitivity of my EOS 350 DA.
Therefore I zoomed into the picture of the Elephant Trunk Nebula in
IC1396. I couldn`t see the faint (18,65 mag) star in a single picture, but I see it now in the attached combination of four pictures.
Clear Skies
Astroholgi

Friday, November 21, 2008

Testing a worm ;-)

Ok folks! I did it! It took about 90 minutes to measure the periodic error of my mount using my Philips ToUCam webcam and the demo version of the excellent software PEMPro. After configuring PEMPro on my PC and solving a firewall problem to finally get the live video stream, I was able to start the measurement. Due to bad seeing conditions the star image wasn't stable enough to get a soft blue sinus curve without peaks. Anyway the error seems to be periodic and manageable. cs px

Monday, October 13, 2008

Aligning the north celestial pole























The last time aligned my telescope mount to the north celestial pole was three years ago, as I was trying to find the point, where the sky does not rotate. It wasn't an easy job for a PAB (Pole Alignment Beginner), although my good G11 polar scope was a real help. Finally I did it and it was a joy to make long exposures with my telescope. Now after the recostruction of my observatory I had to build up the system and align it again. Hence, another alignment odyssey has started. I tried with Holger to aligh my mount using a smart shareware program called WCS. For a better understanding I also downloaded a demo version of PEMPro and tried to evaluate the quality of my mount with it.

Thanks to Holger for his great help.

Thursday, August 21, 2008

Sunday, August 17, 2008

The partial moon eclipse @ Aug, 16th 2008



The partial eclipse of the moon on Aug, 16th .2008. Notice the curvature of the earth globe on the moon surface! This photo is taken at 22:18 Uhr MEST.
Scope: FS-60C reduced @ f/4.4
Cam: Modified ToUCam Pro (WrCmac)
Mount: Defect EQ2. Manuel guiding (no motors)
Software: 384 shots added and sharped with GIOTTO v2.08