dark current noise

Astrotripper wrote:

alexisgreat wrote:

Wow those are spectacular with the EM10! I think you might have captured stars down to mag 13-14 in there (especially the double cluster.)

Yes, at longer exposures, those fainter stars really pop out. Stacking would allow to bring more of them out of the depths of space

I had a question- was that the actual color of the stars, some of them look very magenta-purplish.

See my reply to yyr in another thread here

One of the settings I was looking at was something which makes the WB cast "warm" at higher ISO, should I leave it at that or set it to "Normal" so there is no warm WB cast at higher ISO. I was a bit confused as to what this setting actually does, but maybe it will make star colors come out better?

It does not matter when dealing with RAW files.

Thanks, with my telescope I was able to see stars down to 14th mag, so you have the equivalent of an 8" telescope there do you think you might have gotten stars even dimmer than that (mag 15-17?)

I did some imaging with the E-PL6 last night and this morning and made the mistake of doing it handheld, the stars turned out quite blurry.  I had been using my E-520 at ISO 1600 15 sec exposures handheld at 14mm and there was no image blur with my arms propped on a wall, but then again the E-520 is a heavier camera.  Also I believe the pen lites' IS turns off at shutter speeds slower than 2 seconds doesn't it?