What do you mean you're using a Micro Four Thirds camera for Astrophotography!? 

I agree. I think my Altair Hypercam 294c has the same sensor as the GH5s even. I think the noise reduction is the lesser of two evils with the Pany. It definitely removed way less stars than my Sony A7 which kicks in with a really harsh NR algorithm after a few seconds exposure. I'm hoping to do a shoot out between a bunch of cameras for AP at some point :) I miss using Canon's for AP even though they're not ISO invariant. The best consumer cameras I tested for AP so far are the Fuji's! Really clean ISO invariant sensors and weak IR filters so they let in a bit more H alpha compared to other stock cameras. Sadly not supported by DSS so you need to use a Fuji RAW converter with every frame before you stack :( Canon has been the best compromise so far. Easy to use, doesn't eat stars, and easy to full spectrum mod. They are the cameras I started with and might be the cameras I end with. Unless Fuji's start becoming a bit more software friendly, or their digital medium format GFX50r drops even more in price lol

takind a separate dark frame with the lens cap is quicker and it works. It doubles the exposure time basically. Just you don’t get a brighter image

Thanks Cosmos :) Wishing you some better equipment but I'm impressed with what you've achieved with the little 76mm :) I took my first DSO image in 2003 so I've had a lot of years to collect plenty of images. Nothing world class, but I just enjoy capturing them :)

I prefer long exposure noise reduction too. It's less hassle and you get a tailor made dark frame for each exposure. I guess the only downside is you don't get as much data over the night, but that's a price I'm personally willing to make for a easier life :)

Good point Graeme. I knew about the screen producing heat, but can't say I was taking into account the fact that mirrorless cameras are always on. I've since gone back to Canon, just using a stock 77D at the moment, but I'll bare this in mind for when I inevitably try M43 again at some stage.

Base iso for most m43 cameras is 200.

@@NotFinancialAdvice- The base ISO on the G80/G85 is 100. I didn't realise this wasn't typical.

@@AstroLaVista I think all the M43 cameras are base iso of 200. The base iso on the G85 is iso 200; you can shoot it at iso 100... but is not the base iso, it is an extended iso so it will reduce the quality, dynamic range, etc.. www.imaging-resource.com/PRODS/panasonic-g85/panasonic-g85-image-quality.htm

It's a good question, I used an M42 to M4/3 (micro four thirds) adaptor. You can buy them from Ebay etc.

Hi here is the link to it with Amazon Canada : www.amazon.ca/PANASONIC-Mirrorless-12-60mm-Megapixels-DMC-G85MK/dp/B01M050N05

@bushidoki set your camera to M, turn the electronic shutter off. Then you can even set your shutter to B