Observation by Simon Dawes: My First Variable Star observation - (wa...

Uploaded by

Mr Simon Francis Dawes

Observer

Simon Dawes

Observed

2020 Apr 04 - 21:00

Uploaded

2020 Apr 09 - 08:36

Objects

Lightcurve
Exoplanet

Equipment

Sky Watcher MN190
ZWO ASI 1600 Pro mono
Photometric 'R' filter
EQ6

Exposure

40s

Location

Bexleyheath, Kent (S.E. London really), England

Target name

HAT-P-30b

Title

My First Variable Star observation - (was an Exo-Planet)

About this image

Well ok you might debate if an exo-planet is a variable star, but I was taught by Dick Chambers and he said it was an extrinsic variable and those that knew Dick will know he was never wrong.

I promised Roger Pickard I'd observe a variable star this year - here it is Roger.

Files associated with this observation

Graph_HAT-P-30b_2020-04-04.png (332.5 kB)

Like this image

Mark Phillips, Dr Andrew Smith, Jeremy Shears, David Basey, Andy Wilson, Graham Winstanley, Andrew Dumbleton, Neil Webster, Honor Wheeler, Mr Simon Francis Dawes

Comments

Mark Phillips, 2020 Apr 09 - 10:10 UTC

More like an eclipsing binary really - with the eclipsing body being a planet. Good observation.

There was some discussion on the ExoClock project as to whether a CMOS sensor could be used instead of a CCD. I think you've just shown it can. Is the 1600 12- or 14-bit? Most CCDs are 16-bit I think.

Mr Simon Francis Dawes, 2020 Apr 09 - 13:59 UTC

It is only 12bit but when I compare my results to a friend of mine using a CCD the scatter, range etc. in the results look very similar - if I can get to more sensitive measurements will remain to be seen, but given this is the first 'variable star' I've measured I'd say it was quite promising. I'm very much a beginner in this field.

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