Friday, June 29, 2012

Heavy Ring

The nights eventually become longer, although there is some decent amount of fog and mosquitos in the air. After the tiring week I chose famous M57 planetary nebula called also Ring nebula. Due to its moderate angular size (about 230 arc seconds) it is hard to notice any details there. However you can notice its ringness and some asymetry. And some color :)
I have changed operating system to windows xp, so eventually I was able to connect Canon 20D camera to APT software and made my astrophoto sessions a little bit more pleasant. Also some adventures this time as well - I planned to made 40 exposures, but forgot that objects went sometime through meridian. So happened this time and the mount stopped after 31 exposure.
GSO 6" F5, Canon 20D 31x180 seconds ISO800, flattener.

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