Thread: Volcano of Ara
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Old 05-06-2021, 09:23 PM
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The_bluester (Paul)
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Join Date: Feb 2011
Location: Kilmore, Australia
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Volcano of Ara

Another different take on Ara. The weekend before lockdown I headed to Andy01's place to help diagnose some equipment issues so I took my SVX80 setup and shot some HA and Oiii NB data with the ASI2600MC (Because why not)

Andy suggested this orientation and the following morning ran through a process which gave a pretty snappy bicolour, but I wanted RGB stars. Last night was the one clear night I could see so I shot OSC data until the moon was about to rise then flipped over to Oiii for the rest of the night, as I had a limited amount from Andy's place so it was noisy. What was interesting was that while the HA looked really good, the Oiii shot at Andy's place looked a little weak and the Oiii shot here under my darker skies was so much better that I didn't include the older data in the integration. I suppose it just shows that dark sky makes a measurable difference even to NB imaging.

This is the result from 47 X OSC subs of 300 seconds, calibrated in APP and split to seperate red-green-blue files, and 29 X 600 second HA and Oiii subs, debayered in APP using the HA and Oiii algos respectively and saved as mono subs, with the whole lot integrated in a single process to give R-G-B-HA-Oiii integrations that were registered together. The R-G-B was put together as an RGB image in APP then the lot layered up in Photoshop to produce an RGB-HA-Oiii image. More data would be nice (As always) but I am pretty happy with that as my first proper crack at an RGB-HA-Oiii image.

AB link here. https://www.astrobin.com/9y3n3z/?nc=user

AB of the bicolour NB version here. I can't claim processing here beyond the basic integrations, Andy did the rest. https://www.astrobin.com/t90xrt/?nc=user
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