M 101 - The Pinwheel Galaxy (second try)
And another second try.
Just like the Owl-Nebula before, this is also an object, I tried to get last year. Back then it were some clouds that spoiled my image. But I showed the image here, anyways, because in the galaxy there has happened a supernova shortly before. This supernova has faded away by now (you might be still able to see it, if you look very carefully).
The galaxy, that we have an almost perpendicular view on, is still about 27 million lightyears away. With its diameter of 170,000 Lightyears it is well larger than the Milky Way. Well visible in the image are the countless red nebula-areas in which new stars are born. I find it quite nice, that there are quite a number of additional, further away, small galaxies visible in the image. For once there is the one on the right side of the image, but also on the other side, on the left, there is an outright cluster of small galaxies. You might want to click on the image to have a larger version opened in a new window or tab.
I took this image on three long nights. It consists of 182 subframes of 300 seconds each. That sums up to slightly more than 15 hours exposure time. I would have loved to add one more night of imaging, but the weather has changed and over the next few days I will be clouded out. Next time, a clear sky is possible, the moon will be waxing and spoil my chances. After that, M101 will have moved towards the northwestern sky, which will be not ideal. Maybe I will add a few hours next year.
|Exposure:||182 x 300s, ISO800 + Darks + Flats|
|Camera:||Canon EOS 1100D, modified + CLS CCD Clipfilter|
|Telescope:||10" GSO RC, 2000mm|
|Guiding:||OAG with Lodestar and PHD|
|EIP:||Fitswork and PhotoPlus X6|
|Date:||03/06, 04/02 and 04/07/2013|