Quote:
Originally Posted by DarkArts
That's not bad - better than my first several (ahem, ok, many) attempts. 
But, hey, if we're all throwing in our 2c worth ... 
I have a 174MM, so optimal settings will vary with that and with the optical train and conditions, but I'd use a much shorter exposure (5-10ms), higher gain (just watch for saturation in the live image) and leave the gamma alone until post-processing. I'd also keep each video to 60secs, and definitely try and keep fps up, >120 if possible, though about 47fps is the best I get with USB2. (I'm adding USB3 to every box I have as we speak.)
The 178MC has tiny pixels (2.4um) so using the 5x rule of thumb, your ideal f no. is f/12. Native f/10 is pretty close, so good choice there. If conditions are exceptional, you could try a 2x barlow (or maybe a 1.5x if you can find one) but probably with longer exposure, which will drop the achievable frame rate. You could aways experiment ... |
Appreaciate your time & input DarkArts
Very relative in all ways, and so much to consider in all aspect of planetary imaging, for example, Gain, being similar to dslr ISO, increase ISO = more noise, , so, does Gain = more noise; but does extra frames rates from high Gain help reduce the noise, but not decrease details ??
This is very much the main aspect I'm working on figuring out with this Camera/scope combination
Which is not easy when Seeing varies, for instance, using the hypothetical best settings and the seeing does not play ball, but capturing some moments of better seeing while experimenting with a lesser optimal camera settings could & probably does produce a better result ?
One thing I will start practicing from 'your input' in Keeping the Vid capture down to a minute 'there abouts' as rotation would be interfering to a very questionable extent
------------------------------------------------------------
Quote:
Originally Posted by Camelopardalis
Good point...Bob, which ASI are you using?
|
Am using the Cooled 178 colour Dunk, 2.4um pixels which with Bayer Matrix gives a pixel of 4.8um
https://astronomy-imaging-camera.com...si-178mc-cool/