dark current noise

Astrotripper wrote:

alexisgreat wrote:

The camera has an IR blocker in the front doesn't it to protect the sensor from dust when you change the lens?

No idea. Never had any problems with dust, and I change the lenses all the time and occasionally had the sensor completely exposed when the camera was mounted to my newtonian telescope.

and can use an ac adapter as an alternate power source

That's nice, I was not aware of that possibility. But you could still make your own solution for that problem, as described here by another forum member.

Excellent, so there's a solution to making an alternate power source for the E-PL series of cameras?

I'm guessing a similar thing can be done for any camera, really. But I'm not really good at stuff like this, can't even say how hard/easy that would be.

In that thread he mentioned USB "power packs" I'm really curious about what that might be.

No idea.

I'm not really sure how easy it is to do but on Cloudy Nights and Astromart I've seen '"modded" DSLR on sale from time to time that the previous owner made TEC cooling for. I never actually did it myself but when I corresponded with the people who made it they said it was relatively easy. One problem they did mention though is that you have to be careful about dew- when you cool a camera down it becomes more prone to dew- so they did what is known as regulated cooling.

Yep, read about such mods as well. Some very impressive stuff. But individual mods of DSLRs by hardcore modders for very specific uses is very different to mass produced device for general consumer. And the level of difficulty drastically increases as you have to deal with a much more tightly packed camera like most of the mirrorless cams. Not to mention that floating sensor.

AT I just used the camera for a short while and it sure heated up quick (I'm not using the grip, I suspect the metal body is conducting heat quite efficiently!) On the positive side, a warm camera means less chance of dewing. I haven't seen a huge increase in noise, I set dark frame subtraction to always on (I know that's not always recommended but I wanted to see the effect) and AUTO ISO to 200-3200. Noise filter is on Standard.