Thanks for the vote of confidence! I think.decay wrote: ↑Sun Sep 03, 2023 3:20 pm
I'm sure, Mike is right in principle that mono does not take more time in general. But I too think here at our locations with such limited observation times OSC cams may be better suited. Sometimes it's impossible to get a second clear night for one object and with mono you would have to wait a whole year. Life's to short
Best regards, Dietmar.
First though, Freddy should be able to make great images with this new cam, much more efficient than DSLR especially if in any sort of LP, and the benefits of cooling and temperature matched darks.
Compared to mono, it'll be one of those "it depends" situations, of course. You have to be fully equipped with an EFW, controlled by NINA or in Freddy's case, APT could also do it I imagine. Using all pixels, you will have better efficiency and accuracy. There will be more files for pre-processing, but stacking will not involve debayering. Also everything can readily be properly stacked to a single reference. Very easy in WBPP. With DSS it could be more of a PITA to run each filter manually. Unsure about Siril, but on CN there was just a post where somebody did SHO files and they still had to be registered after the fact. Not optimal, per Ivo and the recommendations here.
But, if you know you can only capture for 2 hours, you would just set things up to take an hour of L and then 20m each of RGB. That's more than sufficient to grab some color and get a decent result, which should be better than 2 hours of OSC. And ST Compose makes it trivial to choose L, RGB if you don't think the RGB has sufficient SNR to use Synth L.
Or, if you don't know when the clouds will come in, you can just start looping shorter sequences of LRGB in the usual 3:1:1:1 ratio and again, you will be better off than the same capture in OSC. This seems especially the case in light pollution or short integration, where you aren't going to be able to pull off any special tricks like Bayer drizzle.
Of course without an EFW, say you are using a manual wheel, filter drawer, or threading a filter on, then yes mono acquisition can take a lot of time. This would be the case with a RASA.
Special objects like moving comets may also be better suited to OSC. I learned that the hard way with C/2022 E3 ZTF!