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

SN2020hvf in NGC3643

10 May 2020|News, Supernova|

Quick image of supernova SN2020hvf and simple photometry in Muniwin. Gives an R (TR) magnitude of 12.38

Object ID SN2020hvf Type Ia Supernova
in NGC3643
Details 2020-05-10 22:42UT
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX @-15C
Exposure(s) 120s 2×2 Baader TR filter
Capture APT
Processing Nebulosity, Muniwin
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M92 (NGC 6341)

5 May 2020|Globular Cluster, M91+, News|

240s exposures in each of RGB this time instead of my usual 180s. Strong moonlight though but APP dealt with the gradients pretty well. Much deeper into the fainter stars.

Object ID M13 Globular, Hercules
NGC 6341
Details Mag 6.3 Size 14′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX @-15C
Exposure(s) 5x240s ea RGB
draks, flats, bias
Capture APT
Processing APP, Photoshop
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Deeper version of M13

3 May 2020|Globular Cluster, M1-30, News|

Decided to try 240s exposures in each of RGB this time instead of my usual 180s (chosen to balance detail and LP) and it seems to have worked well, especially since there only 5 subs of each colour. Much deeper into the fainter stars too.

Object ID M13 Great Globular, Hercules
NGC 6205
Details Mag 5.8 Size 16.6′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX @-15C
Exposure(s) 5x240s ea RGB
draks, flats, bias
Capture APT
Processing APP, Photoshop
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XO-1b Exoplanet transit for ExoClock

23 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 ID XO-1b Exoplanet
Details 2020-04-20 22:01 UT ->
Observed mid-time 2.5 minutes before predicted
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX @-15C
Exposure(s) 215x60s TR filter
Capture APT
Processing ExoClock software HOPS
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M101 (NGC 4321)

17 April 2020|Galaxy, M91+, News|

Added twice as many frames as normal – still noisy. Probably need longer exposures. Bad gradients needed a lot of work in APP.

Object ID M101, NGC 4321
Details Spiral galaxy, Ursa Major
Mag. 9.5
Size 7.4’x6.3′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX @-15C
Exposure(s) 20x180s each RGB
darks, flats, bias
Capture APT
Processing APP, Photoshop
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M5 (NGC 5904)

16 April 2020|Globular Cluster, M1-30, News|

A new globular for me and constellation Serpens

Object ID M5, NGC5904
Details Globular Cluster, Serpens
Mag. 5.95
Size 23′
2020-04-15 23:54 UT ->
Seeing very good
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX @-15C
Exposure(s) 10x180s each RGB
darks, flats, bias
Capture APT
Processing APP, Photoshop
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Medusa nebula HOO

16 April 2020|News, NGC Winter, Planetary Nebula|

Done in RGB before, narrowband this time.

Object ID Medusa nebula
PK205+14.1, Abell 21, Sharpless 2-274
Details Planetary nebula, Gemini
Surface brightness about 16
20-04-13 22:06 UT ->
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX @-15C
Exposure(s) 10x300s each Ha, OIII
Capture APT
Processing APP, Photoshop
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Mizar and Alcor RGB

12 April 2020|News, Other|

Something to image in the strong moonlight. Mizar (Zeta Ursae Majoris) has 2 partners: the brighter one you can see is 14 arcsecs away at mag 4 but there’s also one at 0.04 arcsecs separation and mag. 2 that we can’t see separately. Alcor is a binary too with an 8th magnitude red dwarf companion, 1 arcsec away from the primary.

Object ID Mizar, Alcor
Details 2020-04-06 21:03:20UT
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX @-15C
Baader RGB filters
Exposure(s) 3x30s ea RGB 1×1
Capture APT
Processing APP, Photoshop
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NGC188 (C1)

7 April 2020|Caldwell, News, NGC Winter, Open Cluster|

Never noticed this one before. Very close to the pole so easy guiding as nothing moves very much round there.

Object ID NGC188, Caldwell 1
Open Cluster, Cepheus
Mag. 10
Size 11′
Details 2020-04-06 22:42 UT
Telescope 250mm f4.8 OO Newtonian
Camera ATIK 460EX @-15C
Exposure(s) 3x180s 1×1 TR, 2x180s 1×1 TG, TB
Darks, flats, bias
Capture APT
Processing APP, Photoshop
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HOYS IC1396A stacked

4 April 2020|HOYS, News|

This is all my Red HOYS images of IC1396A that have been uploaded to HOYS since June 2109

Object ID IC1396A HC115
Details 38 images each 3 stacked subs
2019-2020
Telescope 250mm f4.8 Newtonian
Camera ATIk 460EX @-15C
Exposure(s) 38 x 3 x 180s 1×1 TR filter
darks, flats, bias
Capture APT
Processing Nebulosity, APP, Photoshop
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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. This graph is the reprocessed version by the ExoClock team, but very similar to the original.

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
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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.

 

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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
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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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