Quote:
Originally Posted by alistairsam
Hi Paul,
That looks pretty cool.
The fact that you can see the DSO in your guider image is crazy.
is it field rotation at the top left and right? that is possibly to do with PA, not sure what the synscan method is.
Also, I'm no expert, but mono imagers usually get luminosity as 1x1 bin and RGB as 2x2 as 1x1 provides more finer details.
So shouldn't the Ha be 1x1 as that's going to add to the fine details?
Did you rescale it to 1x1 while stacking?
what if you scale the RGB to 2x2 and then stack with Ha as a test?
I'm looking at stacking an OSC Ha with OSC RGB as well, hence the question.
Cheers
|
The Image is actually the main camera (QHY10) the small black square with the 'Dot' is the lodestar guiding on a star. Setting it up this way allows me to see the capture as I tend to set up the run and monitor it remotely from a laptop in bed!
I was running the ED127 without a field flattener so I think the "rotation" that your seeing is from that or as you said from PA. When I stacked the subs in CCDStack normally over 2 hours or so I can see some slight rotation but with these subs they were rock steady! The Synscan is the Hand controller for the EQ6.
Yes the process is a little reversed as I initially was doing a LRGB and the Idea to do Ha came afterward, so the OSC was at 1X1. When you have the Ha filter in I am led to believe that the only channel that the image will be available to you in a OSC camera is the red channel. When you bin the OSC at 2X2 you loose the Bayer matrix so the colour is not there any more. This increases sensitivity but reduces resolution. The Ha was upscaled to the same size as the 1X1 and was used as a HaR to provide Luminance (@70%) to the RGB image. it's an interesting idea and I may see about down sizing the RGB to match the Ha rather than vice versa.
Thanks for looking
Paul