Saturn / Dione / Rhea (24 July 2021) (rdk_CA)

Contains: Solar system body or event

Saturn / Dione / Rhea (24 July 2021)

I captured this image of Saturn on the morning of July 24th, when the planet was approximately 33 degrees above the horizon. This is a composite image using two different exposures for Saturn and its moons (later combining them in Photoshop). Here I used a OSC camera (QHY 5iii 178C) in conjunction with my C8. Because of the small pixel size (2.4 microns) for this camera, on this occasion I decided against using a Barlow lens since I was near critical sampling at f10. Seeing conditions, if not perfect, were reasonably good for this session. In longer exposures, it was possible to see moons Dione and Rhea.

Camera Settings:
QHY QHY5III178C
fps: 11.58
gain: 9.00
exp: 87.04 ms
ROI dimensions: 536 x 452
frames: 1048 (best 40% stacked)
pixel depth: 8 bit/pixel

Image Processing: 9 videos (each roughly 90 s. in duration, ~1000 frames each) stacked in AutoStakkert3! (approx. 40 align points). Sharpening in Registax using wavelets. Derotation in WinJuPos, followed by final processing in Photoshop.

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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Other
Unknown

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Astrometry.net job	n/a
PixInsight job	n/a
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Saturn / Dione / Rhea (24 July 2021)

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Saturn / Dione / Rhea (24 July 2021)

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