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XO-1b Exoplanet transit for ExoClock

2020-04-23T20:44:04+00:0023 April 2020|Exoplanet, News|

Pretty good seeing but data not as good as expected. Some data lost at a critical moment early on due to a failure in file transfer from the observatory computer.

Object IDXO-1b Exoplanet
Details2020-04-20 22:01 UT ->
Observed mid-time 2.5 minutes before predicted
Telescope250mm f4.8 Newtonian
CameraAtik 460EX @-15C
Exposure(s)215x60s TR filter
CaptureAPT
ProcessingExoClock software HOPS
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HAT-P-3b Exoplanet transit

2020-04-07T17:54:32+00:003 April 2020|Exoplanet, News|

The fit seems to match the predicted parameters in this case. Terrible seeing made guiding very poor (1.2″ usually get 0.5″) and strong moonlight made it messy data but the software was still able to pull a good fit out of the data. This graph is the reprocessed version by the ExoClock team, but very similar to the original.

Object IDHAT-P-3b
DetailsExoplanet, Ursa Major
2020-04-02 21:28:42 – 01:19:16
mag: 11.025
depth: 15.84 mmag (0.01584)
duration: 2.22 h
Telescope250mm f4.8 OO Newtonian
CameraATIK 460EX @-15C
Baader TR filter
Exposure(s)269x50s 1×1 exposures
darks, flats, bias
CaptureAPT
ProcessingHOPS 6.0
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Mention in the ExoClock Newsletter 5, 31 March 2020

2020-04-01T21:21:02+00:001 April 2020|Exoplanet, News|

“Highlighted observations

There are quite many interesting observations thanks to all of you. For this month’s issue, two are the highlighted ones, for WASP-104b. This is a planet that was marked with a medium priority and there are only few observations since its discovery. The two observations were carried out at the same date by two observers at different locations. The uncertainty on the predicted mid-time (shown with red) was quite high. Both observations show a time shift of roughly 15 minutes. This is a good example of how simultaneous observations can contribute to cross calibrate the results. We will reanalyse the data to achieve the highest possible precision.

Congrats to our members Mauro Calo from Italy and Mark Phillips from the UK for their observations!”

The ExoClock team reprocessed my data to give a more accurate representation so is different from my initial report.

 

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Exoplanet observation by imagination

2020-01-21T20:38:03+00:0021 January 2020|Exoplanet, News|

How do you observe Exoplanets when it’s cloudy? By imagination. I’m not an artist but I can use Photoshop, so here’s an Exoplanet “observation” by imagination. Just a bit of fun – and really not to scale – that would be boring!

FORTH-1b is the one closest to the star, far too hot for water and life, but FORTH-1c is in the Goldilocks zone, is about 1.2 times the Earth’s diameter and has a satellite. There are 2 gas giants further out.

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WASP-36b

2020-01-28T19:01:56+00:0021 January 2020|Exoplanet, News|

Second observation submitted to ExoClock project. Not such good data

Object IDWASP-36b
ExoPlanet, Hydra
Details2020-01-18 21:56:26 UT
Telescope250mm f4.8 OO Newtonian
CameraAtik 460EX @-15C
Exposure(s)58x180s 2×2 TR
CaptureAPT
ProcessingHOlomon Photmetric software
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WASP-104b

2020-02-15T13:49:29+00:0015 February 2020|Exoplanet, News|

Submitted to ExoClock project.

Object IDWASP-104b
ExoPlanet, Leo
Details2020-02-06 22:11:27 UT
Telescope250mm f4.8 OO Newtonian
CameraAtik 460EX @-15C
Exposure(s)237x50s 2×2 TR
CaptureAPT
ProcessingHOlomon Photmetric software

This fitting uses points with less scatter and is clearer to see.

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Exoplanet X0-2 b

2020-01-28T19:33:49+00:007 January 2020|Exoplanet, News|

Second attempt at an exoplanet. Dips in light curve caused by a moving dark patch in light train – possibly dust or condensation. Would be better data if not for that. Also target is over-saturated again.

Object IDQatar-1 b
Details2019-12-30 20:58:17 – 00:32:05 UT
Lynx
RA (J2000): 07 48 07, DE (J2000): +50 13 33,
V = 11.18 mag, dV = 0.0124 mag, duration = 162 minutes
Telescope250mm f4.8 Newtonian
CameraAtik 460EX -15C
Exposure(s)216x50s TR 2×2 (probably oversaturated)
darks, flats, bias
CaptureAPT
ProcessingNebulosity, AstroImageJ
Exoplanet Transit Database
http://var2.astro.cz/ETD/etd.php?STARNAME=XO-2&PLANET=b

JD mid:
HJD mid: (helcor = 0.00491)
Duration: minutes
Depth: mag

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Qatar-1 b First Exoplanet

2020-01-28T19:34:32+00:007 January 2020|Exoplanet, News|

Been on my list to detect exoplanets for ages and finally got around to doing it. The data is messy and needs to be improved but it does fit the transit. Target star is over-saturated so never going to be good.

Top line shows curve before detrending – probably due to airmass changes. Quite serious clarity variations during session.

Object IDQatar-1 b
DetailsDraconis
2019-12-13 18:56:34 – 20:54:59 UT
RA (J2000): 20 13 32, DE (J2000): +65 09 43 ,
V = 12.84 mag, dV = 0.0204 mag, duration = 96.7 minutes
Telescope250mm f4.8 Newtonian
CameraAtik 460EX -15C
Exposure(s)58x120s TR 2×2 (probably oversaturated)
darks, flats, bias
CaptureAPT
ProcessingNebulosity, AstroImageJ
Exoplanet Transit Database
http://var2.astro.cz/ETD/predict_detail.php?STARNAME=Qatar-1&PLANET=b&PER=&M=

Qatar-1 b transit_FIT_plotter_residuals

JD mid:
HJD mid: (helcor = 0.00041)
Duration: minutes
Depth: mag

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