Still climbing the learning curve.... Here's my latest M-51, nearly 4 hours worth of data, guided, lrgb. The skies were pretty inconsistent (making it noisier than it should be), so I'm actually pretty pleased with the result. When imaging, I accidentally slid my filters the wrong direction and ended up with two sets of reds - it took about 4 hours of mostly wasted processing time to figure that out. :grumpy: Tonight I had just enough transparency to redo the blue (it isn't great data, but it'll do). I'm still fiddling with the image, but this is about 95% complete. Note the dim, distant galaxy in the upper-right. Compare with my previous two tries at this galaxy... https://www.physicsforums.com/showpost.php?p=1238705&postcount=156 https://www.physicsforums.com/showpost.php?p=999862&postcount=125 I just bought an Orion ED80 apochromatic refractor to use as a guidescope and for widefield imaging. I haven't taken many pictures of clusters with my new scope because the fov is too small, so I'll probably get a bunch in the next few weeks (they are easy - they don't take much exposure).