![]() You can trigger the camera with a phone or ipad including in bulb mode. The live view is good up to 8 second exposures. The GH3 will transmit the live view via wireless with a slight(1-2 second delay). I will probably get mine late next month. However, that camera will be almost $1700. The new GH4 will go to at least ISO 12800 with a true electrical gain. The GH3 is only good for ISO 6400 and below since everything above that is not a true electrical gain. Since I have a fast F4.0 scope I can just take higher ISO images in 1 minute or less. It causes too much light pollution, the battery doesn’t last long enough, and it is just cumbersome to deal with. ![]() I hate bringing a laptop out there with me. I have not tried that yet since I personally like the remote controls better. However, there is a program in development that will allow remote control of the GH3 via a wireless network. There is no way to currently control the cameras by hooking them up to a computer with a wire. The GH3 and the Olympus cameras can be controlled by the Pixel wireless remote timer. Since I had Brent Oliver modify the E-PM2 to visible + Ha it works very well with all of the filters. I use 5 Baader filters including the UV/IR cut, UHC-S, OIII, 7nm Ha, and 30 nm Ha. I have to adjust the total distance back a bit because the filters do affect the coma some. When I image in my backyard I put the Orion 5 slot 1.25 inch filter wheel set in the imaging chain instead of the t-mount spacers. This gives me the least amount of coma and simplifies the collimation process. I don’t need filters there so I can just attach directly to the coma corrector. That is the setup I use when I am at a dark site. Then I use a thin t-mount adapter to micro four thirds adapter that I got off amazon for about $30 to attach the camera. If you need the exact dimensions of the spacers I can try to provide them later. I put enough t-ring spacers in there to give me exactly 1 and 7/8 of an inch spacing between the shoulder of the t-mount adapter to the flange of the camera lens housing. It has a 2 inch to t-mount adapter ring that came with the coma corrector. I have an Astro Tech 8 inch 800mm F4.0 scope with the Astro Tech coma corrector/field flattener. Not sure about what he said here on page 2 about the E-PM2 doing true electrical gain all the way to ISO 25,600 however since it seems anything above ISO 5000 is "extended" For instance if I take a 2 minute exposure I can have the camera refresh every 15 seconds and show me what it has captured so far. It allows you to set the refresh rate of the live view while the image is being captured. This feature is exactly what the Mallincam does. M42 and Running man Olympus E-PM2 30 seconds ISO 12,800 single exposure no HDR UHC-S FilterĪll Olympus cameras since the E-PM2 have had live bulb and live time. Panasonic GH3 30 Seconds ISO 6400 single exposure no HDR Olympus E-PM2 M42 13 Seconds ISO 6400 single exposure no HDR Super Nova ISO 1600 1 minute in 2x lossless crop mode for an effective focal length of 1600mm Horse Head 1 Minute 7nm Ha Filter ISO 12,800 Horse Head 40 Seconds ISO 12,800 UHC-S filter Olympus E-PM2 Rosette Nebula ISO 12,800 50 Seconds UHC-S filter 800mm F4.0 Olympus E-PM2 The Olympus applies just enough noise reduction to those images to make them usable. Most of these were taken with a 1.25” Baader UHCs filter. Here are some sample out of camera JPGs from both cameras. ![]() Seems like shutter shock is not much of a problem for astro. I found this wonderful thread posted on CN about the Panny GH3 and the Oly E-PM2.
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