Astronomie en Visuel Assisté / Electronically-Assisted Astronomy

Is anyone aware of software that will overlay or stack mono (grayscale) exposures and one shot color (OSC) exposures in real (or near real) time? Here is what I would like to do. I have two telescopes on the same mount. One has a color camera and one has a mono camera. I would like to simultaneously take and stack exposures from both cameras/telescopes. I would like to do this because I get the best sensitivity and detail with a mono camera, but mono loses a dimension without color. So, I would like to be able to colorize the mono image using a second telescope/camera.

I’m pretty sure SiriL would be able to do that, provided you write the scripts for it.

Yes... for sure no soft exists at the moment... would certainly need a bit of programing

I understand from searching Cloudy Nights that Pixinsight will do it in post processing. But I haven't figured out what it would take to make it work for live stacking. I am good at building hardware projects and not so good at building software.

Thanks for the tip on Siril. I hadn't heard of that one. I will look into it.

I cited SiriL because I know it’s already been used for live stacking, and it also supports preprocessing images (darks, offsets and the such). So I gather there’s a pretty high probability that mixing luminance and RGB is doable before stacking

It's hard to do it in real time,with each frames, especially if the camera and focal are differents, the processing time would be long.

But it's not difficult to combine a mono and color final stack in Photoshop for exemple. The mono Stack (luminance channel) must have a bigger size (in pixel) than the color stack.

You can also do that in Pixinsight of course, and IRIS, who is good for this job.

If you have an exemple, I can try to make an action in Photoshop, I just need two .tif image delinearized 16it.

I've already seen this be done in photoshop, but not in live... Interresting subject!

I do have Photoshop (CS6, I think) on my astronomy computer. But I have not used it. The computer is built for this kind of work. It is a Dell T7500 workstation with 12 Xeon cores and 72GB of ram.

Rickster a écrit : ↑

04 nov. 2019, 20:48

I do have Photoshop (CS6, I think)

It's good with CS6.

Here an exemple with a very simple Photoshop action in step by step mode for you to understand...sorry @Rickster but in french.

Two images, one for luminance with details, and one for color (no need details, only enough colors), not the same size, not the same angle, with a strange sky... but remember, it is necessary to have enough common pixel for a automatic alignement. and the Photoshop action video

Excellent Steph! Thank you. I will be giving Photoshop a try.