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
NGC 6888 Crescent Nebula Ha
Just Ha possible because of twilight and moonlight
| Object ID | NGC 6888 Crescent Nebula, C27 |
| Details | 2020-05-08 22:44 UT – Mag 7.4, size 18’x12′ Cygnus |
| Telescope | 250mm f4.8 Newtonian |
| Camera | Atik 460EX @-15C |
| Exposure(s) | 15x300s Ha 1×1 darks, flats, bias |
| Capture | APT |
| Processing | APP, Photoshop |
SN2020hvf in NGC3643
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 |
M92 (NGC 6341)
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 |
Deeper version of M13
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 |
XO-1b Exoplanet transit for ExoClock
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 |
M101 (NGC 4321)
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 |
M5 (NGC 5904)
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 |
Medusa nebula HOO
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 |
Mizar and Alcor RGB
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 |
NGC188 (C1)
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 |
HOYS IC1396A stacked
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 |
Reprocess of Copernicus and Apennines
Reprocessed to bring out more detail of the 5 March 2020 post
HAT-P-3b Exoplanet transit
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 |
Venus 2020-04-02
Probably my best Venus so far.
| Object ID | Venus |
| Details | 2020-04-02 14:54 UT Terrible seeing and gusty wind shaking the scope |
| Telescope | 250mm f4.8 Newtonian |
| Camera | ZWO ASI 290mc ZWO Infrared filter |
| Exposure(s) | 120s 220fps SER file |
| Capture | FireCapture |
| Processing | Registax 6, Photoshop Resized 120% |
Mention in the ExoClock Newsletter 5, 31 March 2020
“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
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 |
M81 Ha and RGB
A layer of Ha added on top of RGB to bring out the emission regions in red.
| Object ID | M81 Bode’s Nebula |
| Details | 2020-03-22 21:17 – 22:23 UT |
| Telescope | 250mm f4.8 Newtonian |
| Camera | Atik 460EX Baader Ha and RGB filters |
| Exposure(s) | 10x180s each RGB 2×2 8x300s Ha 2×2 |
| Capture | APT |
| Processing | APP, Photoshop |
IC443 Jellyfish Nebula HOO
HOO process
| Object ID | IC 443 Jellyfish Nebula |
| Details | 2020-03-18 21:25 – 22:53 UT |
| Telescope | 250mm f4.8 Newtonian |
| Camera | Atik 460EX Baader Ha and OIII filters |
| Exposure(s) | 9x300s Ha 1×1 6x300s OIII 1×1 |
| Capture | APT |
| Processing | APP and SiriL – then combined into one in Photoshop |
Rosette Ha mosaic 6 sessions
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 |
70.4% 4-pane Lunar mosaic
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 |