giovedì 13 giugno 2013

Good Polar Alignment

This time I have done it properly. Last time the problem was that I choose Vaga as reference star, but it was towards east... Now I have pointed to Arcturus in south direction. So I have done 50 good exposures, 1 min each as usual. This is the Ring Nebula:



M57 - Ring Nebula

Canon at the prime focus of C8 (tracking not guided)
50x60 sec frames , 40 dark , ISO 800 
stacked with DSS and elaborated with Gimp




Then, as the sky was clear and no dew (thanks to the tube) I decided to try with the Dumbbell Nebula. This is the result:


M27 - Dumbbell Nebula

Canon at the prime focus of C8 (tracking not guided)
50x60 sec frames , 40 dark , ISO 800 
stacked with DSS and elaborated with Gimp

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