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Old 11-03-2019, 06:30 AM
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rcheshire (Rowland)
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Join Date: Apr 2010
Location: Geelong
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LMC - part thereof

This was taken at the November 2018 Snake Valley Camp and processed while waiting for the weather to clear at Snake Valley presently.

I've tried the LMC several times without guiding and the results were not good. The camera scope combination also under samples the image and I have not been happy with that.

So how to improve without buying new gear? And how to improve the DSLR art form without giving up.

While I would normally use iso800 and three minutes at a dark site, on this occasion iso400 avoided the usual star bloating. I just took a lot more subs - 58 in total - dithered 12 pixels in a box pattern. Edit: Canon 450D - cooled -5C.

A 2 x drizzle (during registration) further improved image resolution. The final stacked image was huge - so resize 50% with ImageMagick and drop into StarTools.

Post processing on a laptop so just guessing the colour saturation. It could be pushed a little more. The green in the Tarantula and other nebs in the area is noticeable in the hi-res without a lot of saturation.

Processed in Siril (IRIS for Linux) which in its current version is adequately on par with PixInsight for pre-processing. Bias darks and flats. No noise reduction.


Link to higher res - colour needs some work.
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Last edited by rcheshire; 11-03-2019 at 11:12 AM.
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