Amateur Astronomy from Edinburgh2019-08-04T20:00:47+00:00

Amateur Astronomy from Edinburgh

This website is a place where I can post my images purely for the fun of it. You can find more information about the equipment I use on the About/Equipment page.

To give me something to aim for, I have set up pages to get as many Messier and Lunar 100 objects as I can. The Deep Sky page is for objects not in Messier’s catalogue and includes some more recent lists such as the Caldwell and Finest NGC catalogues.

Light pollution is a serious problem for amateur astronomy here on the edge of Edinburgh, Scotland, so this is a battle of photons vs sodium! Please come back and visit as the site develops, I make lots of mistakes, the weather gets worse and the skies get brighter.

I am a member and webmaster of the Astronomical Society of Edinburgh and some of my pictures are displayed on their Flickr page.

Mark

Recent posts

HAT-P-3b Exoplanet transit

3 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.

Object ID HAT-P-3b
Details Exoplanet, Ursa Major
2020-04-02 21:28:42 – 01:19:16
mag: 11.025
depth: 15.84 mmag (0.01584)
duration: 2.22 h
Telescope 250mm f4.8 OO Newtonian
Camera ATIK 460EX @-15C
Baader TR filter
Exposure(s) 269x50s 1×1 exposures
darks, flats, bias
Capture APT
Processing HOPS 6.0

Mention in the ExoClock Newsletter 5, 31 March 2020

1 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.

 

Maria Crisium & Nectaris, Theophilus, Cyrillus, Catharina Infrared

29 March 2020|Moon, News|

Two daytime infrared imaging sets

Object ID Maria Crisium & Nectaris, Theophilus, Cyrillus, Catharina Infrared
Details 2020-03-28/29
Daytime
Telescope 250mm f4.8 OO Newtonian
Camera ZWO ASI 290MC
ZWO Infrared filter
Exposure(s) 30s AVI @47fps 1024×768
Capture FireCapture
Processing 10% frames stacked in Autostakkert
Final process in Photoshop

Rosette Ha mosaic 6 sessions

5 March 2020|Narrowband, Nebula, News, NGC Winter|

Still a work in progress. APP is great for doing these sorts of mosaics.
5000 pixel size reduced to 2000 for this.

Object ID NGC2244/2237
Rosette Nebula
Monoceros
Details 6 sessions over Jan – March 2020
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX
Baader 7nm Ha filter
Exposure(s) Nominally 6 x 15 x 300s
but probably fewer since some will be discarded
Capture APT
Processing APP, Photoshop
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70.4% 4-pane Lunar mosaic

5 March 2020|Moon, News|

One of my best Moon images I think.

Object ID 70.4% illuminated Moon
Copernicus, Eratosthenes, Archimedes
Apennines, Mare Serenity and Imbrium
Details 2020-03-02 20:02 UT
Seeing III (I – V)
Telescope 250mm f4.8 Newtonian
Camera ZWO ASI290mc
Exposure(s) 4x120s .ser videos, 45fps
1024×768
Capture FireCapture
Processing Autostakkert, Photoshop
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M51 with synth G

23 February 2020|Galaxy, News|

Green channel was very noisy with horrible LP gradients in it so synthesised G from R + B. Still noisy though.

Object ID M51 Whirlpool Galaxy
Details Red channel 2020-02-15
Blue channel 2020-02-18
Telescope 250mm f4.8 OO Newtonian
Camera Atik 460EX@15C
Baader RGB
Exposure(s) 15x180s ea RB
darks, flats, bias
Capture APT
Processing SIRIL (first time)
Photoshop
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WASP-104b

15 February 2020|Exoplanet, News|

Submitted to ExoClock project.

Object ID WASP-104b
ExoPlanet, Leo
Details 2020-02-06 22:11:27 UT
Telescope 250mm f4.8 OO Newtonian
Camera Atik 460EX @-15C
Exposure(s) 237x50s 2×2 TR
Capture APT
Processing HOlomon Photmetric software

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

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Heart of the Rosette NGC2244

6 February 2020|HOYS, Nebula, News|

Data taken for the HOYS project of NGC2244 in Hydrogen-Alpha. This was taken in strong moonlight but Ha images are much less affected. RGB was a non-starter with the Moon so strong.

Object ID NGC2244 Rosette Nebula HOYS 008
Details 2020-02-04
22:48:47 – 23:36:01
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX @15C
Exposure(s) 10x300s Baader Ha
bin 1×1, darks, flats, bias
Capture APT
Processing Nebulosity, Photoshop
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Exoplanet observation by imagination

21 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

21 January 2020|Exoplanet, News|

Second observation submitted to ExoClock project. Not such good data

Object ID WASP-36b
ExoPlanet, Hydra
Details 2020-01-18 21:56:26 UT
Telescope 250mm f4.8 OO Newtonian
Camera Atik 460EX @-15C
Exposure(s) 58x180s 2×2 TR
Capture APT
Processing HOlomon Photmetric software
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Supernova SN 2020ue in NGC 4636

19 January 2020|Galaxy, News, Other|

Object ID SN 2020ue
NGC 4636
Details 2020-01-19 01:12:57 UT
Muniwin gives mag. as 12.56
RA = 12 42 47
DEC = +2 39 35
FWHM = 2.77 pxl
Sky = 1708.31 ADU
Sky dev. = 50.19 ADU
Net intensity = 94384.6 ADU
Noise = 271.5 ADU
S/N ratio = -25.4 dB
Brightness = 12.5627 mag
Error = 0.0031 mag
Telescope 250mm f4.8 OO Newtonian
Camera Atik 460EX @-15C
Exposure(s) 5x120s 2×2 TR
Capture APT
Processing Nebulosity, Muniwin
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WASP-43b

19 January 2020|Exoplanet, News|

First observation submitted to ExoClock project.

Object ID WASP-43b
ExoPlanet, Sextans
Details 2020-01-18 00:10:30 UT
Telescope 250mm f4.8 OO Newtonian
Camera Atik 460EX @-15C
Exposure(s) 62x120s 2×2 TR
Capture APT
Processing HOlomon Photmetric software
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Exoplanet X0-2 b

7 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 ID Qatar-1 b
Details 2019-12-30 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
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX -15C
Exposure(s) 216x50s TR 2×2 (probably oversaturated)
darks, flats, bias
Capture APT
Processing Nebulosity, 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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