Contains:  Solar system body or event
Saturn 2020-06-02 19:30 UT ... d'oh!, 


            Darren (DMach)
Saturn 2020-06-02 19:30 UT ... d'oh!, 


            Darren (DMach)

Saturn 2020-06-02 19:30 UT ... d'oh!

Acquisition type: Lucky imaging

Technical card

Imaging telescopes or lenses: Celestron C11 XLT

Imaging cameras: ZWO ASI290MC

Mounts: CEM60

Software: AutoStakkert! 3  ·  Astra Image Company Astra Image PLUS  ·  Registax 6  ·  Photoshop CC  ·  FireCapture 2.6

Filters: Astronomik UV-IR Block L-Filter T2

Accessory: ZWO Atmospheric Dispersion Corrector (ADC)  ·  Baader SteelTrack Focuser  ·  TeleVue PowerMate 2" 2x  ·  Teleskop Service T2 Quick Changer and 360 Degree Rotator  ·  Baader SteelDrive II Focusing Motor

Date: June 3, 2020

Time: 03:30

Frames: 6000

FPS: 66.00000

Focal length: 5600

CMI: 120.50

CMII: 296.30

CMIII: 235.00

Seeing: 5

Transparency: 8

Resolution: 706x531

Locations: Home, Singapore, Singapore

Data source: Backyard


The excellent seeing conditions I experienced the other night resulted in one of my best Jupiter images to date and, as those conditions persisted after I switched to Saturn, I was cautiously optimistic about this image as well.

As soon as I sharpened the first stack, however, my heart sank: it become immediately evident that I forgot to adjust the ADC when I changed targets. This was evident from the blue and red fringing on opposing sides the planet and rings , and likely reduced the resolution of detail in the final image.

I used the RGB Align function in Registax to mitigate the issue as best as possible, and this did improve the result slightly. You can see the same image with no RGB alignment applied in Rev B, and by mousing-over the main image. (You'll have to look hard at this image scale for the difference, though.)

Not a bad result by any means, but still a shame not to have taken full advantage of those rare conditions.

Thanks for looking!



  • Final
    Saturn 2020-06-02 19:30 UT ... d'oh!, 


            Darren (DMach)
    Saturn 2020-06-02 19:30 UT ... d'oh!, 


            Darren (DMach)


Description: Without Registax RGB align

Uploaded: ...


Saturn 2020-06-02 19:30 UT ... d'oh!, 


            Darren (DMach)