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Jupiter at 7820mm (07May2017)

Jupiter through 14" at 7820mm (07May2017) Jupiter through 14" at 7820mm (07May2017) ©2017 Frederick Steiling
Target Information
Main Target Designation(s) Jupiter
Additional Images
Published image Full resolution
All Exposures
Date(s) of acquisition 07May2017 at 21:41
Location Defiance, MO
Capture resolution 960x960
Luminance Exposures
L-filtered monochrome 151 x 22.81ms at 64% gain
Video source 5% of 75" video at 40 fps (avg)
Red Exposures
R-filtered monochrome 59 x 50.78ms at 70% gain
Video source 10% of 30" video at 19 fps (avg)
Green Exposures
G-filtered monochrome 53 x 56.93ms at 70% gain
Video source 10% of 30" video at 17 fps (avg)
Blue Exposures
B-filtered monochrome 61 x 49.66ms at 70% gain
Video source 10% of 30" video at 20 fps (avg)
Imager ZWO ASI120MM
Telescope/Lens Celestron C14 XLT SCT
Focal Length 7820mm (f/22)
Mount Celestron CGE Pro
Focuser GSO Crayford
Focusing Manual
Magnifiers Orion 2x "Shorty" Barlow
Acquisition FireCapture 2.4
Guiding None
Processing AutoStakkert 3, Registax 6, WinJUPOS 10, PixInsight 1.8

Thanks to some recent time on ASEM's C14 scope, I've pulled down a full color image of our giant neighbor with my best resolution yet!

In this image, I acquired separate L, R, G, and B images through a 2x barlow at an effective focal length of 7820mm.  The terrible atmospheric seeing in my area is clearly evident at this level, but with luminance subexposures of 22ms, the video was able to "freeze" and cut through some of this.  The longer exposures required for the color filtering at f/22 didn't fare quite as well, but with the detail coming from the luminance data, we're left with a pleasing view of the intricate sweeps of the Jovian clouds.

A bit of miscollimation was mildly evident through this acquisition, and while the wavelet application in Registax 6 was able to recover a significant amount of detail, I believe a little tweaking will take the imaging capability of this scope to another level.  When we get more clear sky opportunity, I'll get a little more familiar at ASEM's observatory, and will attempt my next lunar and planetary challenges.  But with this image, we see what this scope is capable of, and are able to take in the artistic churning of the gas giant's clouds.

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