Quote:
Originally Posted by Ross G
Great looking photo Ray.
So much detail!
Ross.
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thanks Ross - it was great to have nice seeing for the Ha data.
Quote:
Originally Posted by jase
Stunning resolution, Ray. Best I've seen of this target for a long time, clearly the short exposure work well for you. Similar principle to 'lucky imaging', though exposure times are radically shorter compared to 60s subs. Not sure of the approach you are using to scale low resolution RGB data to the high resolution luminance but it is working for you so why change it. Great result. The image has an eye catching 3D feel to it. More please...
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Thanks Jase. I guess this is at the "mildly fortunate" end of lucky imaging - 1 minute subs certainly allow the odd messy bit of seeing to be excluded and the camera is quite happy working with short subs. Used dynamic align in Pixinsight for combining Ha and RGB.
Quote:
Originally Posted by marc4darkskies
Wow, 1 Min Ha Subs?!! 20 sec RGB subs?!! Very impressive image Ray - great resolution! 
Cheers, Marcus |
Thank you Marcus.
This is brighter than the average target, so fairly short subs were used just to keep the core region from saturating (only to find that it looked best overall if was slightly saturated in processing). However, as a general rule, the icx694 allows quite short subs without too much penalty if desired - modelling suggests that the optimum dark sky sub for broadband with this system is 2 minutes. Ha should be as long as possible, but it can still deliver good results with subs below 5 minutes on average targets. It is also great fun to use - apart from waiting for the PC to do a super-res stack on over a hundred 6mp images
Just for interest, manually sorted and super-res stacked the best Ha data - noisy but gained a slight bit extra detail, so should have tried it earlier.
regards Ray