Contains:  Solar system body or event
Jupiter: 2019-06-15 (UT 18:05 2019-06-14), Darren (DMach)

Jupiter: 2019-06-15 (UT 18:05 2019-06-14)

Acquisition type: Lucky imaging

Equipment

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Acquisition details

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Description

The night this data was collected had pretty good transparency and reasonable seeing, but I was a bit concerned about the data quality nonetheless ... for some reason, I always struggle with the stability of my CEM60 when the OTA is on the east side of the mount. My imaging targets bounce around a lot, almost like the mount is being affected by wind (but with no wind or breeze to speak of). Maybe I need to adjust the counterweights/balance for this circumstance? Any tips/ideas on this one appreciated!

In the end I had 18 x 90s captures with decent data to stack and de-rotate - total time elapsed between the first and last capture is almost exactly 30mins. Between the vibration in the mount and the seeing I had to be pretty brutal with the frame quality selection, stacking the top 15% in each case. Thus the final images contain just shy of 20,000 frames of data.

I went back-and-forth with the processing on this one, initially producing an image that looked nice and crisp - sharpening taken just far enough to remove the blur, but possibly over-sharpened for some tastes (Rev B).

But I then decided that "some tastes" included my own, so I made a version with the sharpening backed off a little (Rev A).

Arguably a quite subtle difference, but let me know which you prefer.

Finally, I have produced an animation by de-rotating a moving average of 6 captures/stacks (Rev C).

Thanks for looking!

Comments

Revisions

    Jupiter: 2019-06-15 (UT 18:05 2019-06-14), Darren (DMach)
    Original
  • Final
    Jupiter: 2019-06-15 (UT 18:05 2019-06-14), Darren (DMach)
    B
    Jupiter: 2019-06-15 (UT 18:05 2019-06-14), Darren (DMach)
    C

B

Description: Sharper version.

Uploaded: ...

C

Description: Animation

Uploaded: ...

Histogram

Jupiter: 2019-06-15 (UT 18:05 2019-06-14), Darren (DMach)