Thanks Mike, you just about got me convinced, though I'm railing at the outrageously high prices of motorised filter wheels. How can they possibly justify more for a simple wheel with a stepper than what you'd pay for a full Got To telescope mount. The mind boggles. Reckon I'll get the ATIK. We need someone talented to come up with a motor add on.
cheers,
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Originally Posted by iceman
He has the mono. You want a mono Robert, simple as that. If you're going to go the next step up, get a mono. I know Lester bought a colour, and Astroman is looking at colour as well, but that's probably because they want the extra hassle of changing filters etc.
I've seen some people with the DMK 1024x768 mono as well, great images with huge image scale. Though For lunar stuff it's just what you want. For planetary it wouldn't make too much difference because the image scale you're working at isn't usually that large anyway.
I reckon you're all set up with your 925, and the next scope will be your beast newt. To go to the next level, you want a better camera.
60fps isn't really a concern at our level. To use 60fps, you'd need to be either imaging a very bright object (like the moon), or have an 18" scope to let enough light in.
Almost every top imager is using 30fps as far as I know. Some cameras have hardware ROI (region of interest) as opposed to software ROI. That way, you can draw a box around what you want to capture and not have to pull down the full 640x480 each frame - if imaging a smaller object like Mars, you can draw a smaller box around it and use a higher fps. Again though, you'll need enough light coming in.
and a fast enough computer to keep up.
30fps is 6 times faster than what I use now.. In theory, I should be able to get 6 times more frames than what I do now. I lose some due changing filters/dampening, and I lose some because i'm not capturing for the full 2 minutes in each colour, but if I can capture 30 seconds of each colour, and allow 30 seconds for changing filters and dampening, I'll end up with 900 frames of each colour channel. That should be plenty enough to find 200 good frames.
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