Observation by Peter Tickner: Venus dark side 9th February

Uploaded by

Peter Tickner

Observer

Peter Tickner

Observed

2022 Feb 09 - 07:00

Uploaded

2022 Feb 10 - 01:02

Objects

Venus

Equipment

ZWO ASI174MM
1000 nm long pass and 935/170 nm Semrock filters stacked
14inch f/10 LX200ACF SCT
EQ8 mount

Location

Urban Berkshire

Target name

Venus dark side

Title

Venus dark side 9th February

About this image

This compares my best effort to date on a mission to image the dark side of Venus with one of many excellent images by Anthony Wesley and Phil Miles in Australia this elongation. I am grateful for Anthony and Phil's permission to use their image.

Peter

Files associated with this observation

Venus 9th February for BAA.png (271.4 kB)

Like this image

David Basey, Mattia Piccoli, Martin Lewis, Eric Watkins, Jeremy Shears, Manolo_Rodriguez, Tim Haymes, Mr Ron Palgrave, Graham Winstanley, Nick James, Paul G. Abel

Comments

Martin Lewis, 2022 Feb 10 - 14:18 UTC

Good work Peter. I think Anthony and Phil's camera was IMX547 chipped with 2.74um pixels and yours IMX174 with 5.86um pixels so a good match in imaging scale to scope size, given f-ratios were 4.5 to 10. To satisfy Nyquist you'd need an f-ratio of 3x to 5x pixel size in microns but that's for optical wavelengths. Guess at 1000nm that moves to about 1.8x-3x so at the bottom end of the range.

Martin

Mr Ron Palgrave, 2022 Feb 11 - 22:17 UTC

Peter, what time were your observations made? I am interested in the relative altitudes of Sun and Venus.

Peter Tickner, 2022 Feb 12 - 00:44 UTC

Hello Ron the images were all captured between 06:39 and 07:15 when Venus cleared a neighbour’s tree at around 11 degrees up and the Sun was below the horizon still.

Regards,

Peter

Mr Ron Palgrave, 2022 Feb 12 - 23:03 UTC

Great result then. I was expecting to have to capture on multiple days and to derotate. Its encouraging that you captured in one go. Like you I have un-co-operative trees to guillotine my sessions.

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