Quote:
Originally Posted by Zuts
Hi,
You dont need to shoot for so many minutes. Usually a few thousand frames should suffice. When you stack you throw away around 70% anyway. Planets are so bright that a few thousand good stacked frames is all you need. A zwo asi 290 easily gets 30 fps without dropped frames on a good laptop and thats only a few minutes. If you have usb 3 and restrict to a region of interest, the area around the planet you can easily get over 100 fps. Any field rotation is automatically removed by registax anyway.
So you could take multiple 2 minute videos, process and pick the best.
And No, you dont need an eq mount for planetary imaging.
Cheers
Paul
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Ok, i will practice more with my Mak and hope to buy 2x Powermate to push it more, i feel the native Mak i have isn't much for larger scales, and i keep failing to upscaling or upsampling the smaller ROI, so that i wanted another scope so i don't need to over sample it because i will have large ROI anyway, the only way with my Mak is either trying 2x Powermate if this is good enough even at f30 or find a high quality 1.5x Barlow that can magnify the Mak FL and still not f30 or more.
I did shoot 1 minute and 2 and 3 minutes, and i also think it is enough, but in Facebook there are some members keep trying to tell me i have to shoot minimum 5 minutes or more than 3 minutes even for single video, and they keep showing results with longer videos, and funny they also using something like 10-35% of the frames, and their reasons is that with longer videos and frames over 10k or 20k then it will be easy to pick 10-30% out of it rather than 1-2 minutes videos with maybe maximum 3k-5k, so now i have to make my mind about which side i should follow or who is true?
I like to have higher fps, but this is coming with the cost/price of exposure, if i use lower gain and faster exposure speed then it is very dim or not proper exposed, and then the lower the speed i set the lower fps it will be, in opposite if i keep it high speed then i have to increase the GAIN, and thus definitely increase the noise, and some told me that with stacking so many frames it will kill noise or have enough SNR, but isn't there a limit to what maximum gain i should use anyway?