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

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

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.

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

Qatar-1 b First Exoplanet

7 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.

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

Object ID Qatar-1 b
Details Draconis
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
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX -15C
Exposure(s) 58x120s TR 2×2 (probably oversaturated)
darks, flats, bias
Capture APT
Processing Nebulosity, 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

IC405 Flaming Star Nebula HOO

7 January 2020|Nebula, News, NGC Winter|

Been trying to do this one for a while and finally got it.

Object ID IC405 Flaming Star Nebula, Caldwell 31
Details Size 37’x10′, Mag. 6.0
Auriga
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX -15C
Exposure(s) 10x300s Ha and OII 2×2
darks, flats, bias
mapped HOO
Capture APT
Processing APP, Photoshop

IC349 Barnard’s Merope Nebula

7 January 2020|Nebula, News, NGC Winter|

Thought I’d try and get the Merope Nebula as the whole Pleiades don’t fit in my FOV. But saw a flaw beneath Merope which turned out to be another nebula.

Object ID IC349 Barnard’s Merope Nebula
Details Size 0.5′, Mag. 13
Taurus
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX -15C
Exposure(s) 3x180s ea RGB 1×1
darks, flats, bias
Capture APT
Processing APP, Photoshop

NGC 2024 Flame Nebula RGB

5 December 2019|Nebula, News, NGC Winter|

Wasn’t expecting it to be clear so this is a bonus. Only managed 5 of each colour though so quite noisy and Alnitak overpowers eveything.

Object ID NGC 2024 Flame Nebula
Details Size 30’x30′, Mag. 10
Orion
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX -15C
Exposure(s) 5x180s ea RGB 1×1
darks, flats, bias
Capture APT
Processing APP, Photoshop
Comments Off on NGC 2024 Flame Nebula RGB

M92 RGB

5 December 2019|Globular Cluster, News, NGC Summer|

Because sky conditions were very poor I went back to globulars as nebulosity can easily disappear in LP and fog. APP got rid of the massive gradients and LP quite well I think.

Object ID M92 (NGC6341)
Details Size 14′, Mag. 6.3
Hercules
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX -15C
Exposure(s) 10x180s ea RGB 1×1
darks, flats, bias
Capture APT
Processing APP, Photoshop
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IC410 Tadpoles in Hydrogen Alpha

5 December 2019|Nebula, News, NGC Winter|

The two tadpoles are about 10 light years long and places of star formation.

Object ID IC410 Tadpoles
Details Size 50’x50′, Mag. 7.5
Auriga
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX -15C
Exposure(s) 10x300s Ha 2×2
darks, flats, bias
Capture APT
Processing APP, Photoshop
Comments Off on IC410 Tadpoles in Hydrogen Alpha

Fish head nebula (IC1795)

5 December 2019|Nebula, News, NGC Autumn|

This is a bit of a weird looking one! Stars to the left aren’t good shapes – probably combination of optical alignment, focus and collimation. Stars are over-processed too – should have been so much better.

Object ID IC1695 Fish head nebula (part of the Heart nebula)
Details Size 12’x12′
Cassiopeia
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX -15C
Exposure(s) 20x300s ea Ha, OIII 2×2
darks, flats, bias
Capture APT
Processing APP, Photoshop
Processed SHO with synthetic SII
Comments Off on Fish head nebula (IC1795)

NGC 6992/6995 Eastern Veil (C33)

1 October 2019|Caldwell, Nebula, News, NGC Summer|

Could only fit part in the FOV

Object ID NGC 6992/6995 Eastern Veil, Caldwell 33
Details Size 60’ x 8′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX -16C
Exposure(s) 10x180s ea RGB 1×1
Capture APT
Processing APP, Photoshop
Comments Off on NGC 6992/6995 Eastern Veil (C33)

Cygnus Wall NGC 700 (Caldwell 20)

21 September 2019|Caldwell, Narrowband, Nebula, News, NGC Summer|

Part of the North America nebula – the Central America part – seems to be known as the Cygnus Wall. Can only fit a small part of this object in my FOV.

Object ID NGC 7000, C20
Details Mag. 4
Size: 120′ x 100′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX, Baader filters
-15C
Exposure(s) 10x300s ea in Ha and OIII
Capture APT
Processing APP, Photoshop
Mapped HOO and moved to the blue end
Comments Off on Cygnus Wall NGC 700 (Caldwell 20)

M27 (NGC 6853) Dumbbell Nebula

20 September 2019|M1-30, News, Planetary Nebula|

Done this one quite few times now but this is the first time processing with Astro Pixel Processor. Good for gradients and light pollution but a little slow.

Object ID M27 (NGC 6853)
Dumbell Nebula
Details Mag. 7.5
Size 8′ x 5.6′
Telescope 250mm f4.8 Newtonian
EQ6-R autoguided to 0.5″
Camera Atik 460EX at -15C
Baader RGB filters
Exposure(s) 10 x 120s each in RGB
Flats, darks and bias
Capture APT
Processing Astro Pixel Processor (APP)
Photoshop
Comments Off on M27 (NGC 6853) Dumbbell Nebula

Pelican Nebula TR IC 5070 HOYS-CAPS data

14 September 2019|HOYS, Nebula, News, NGC Summer|

A by-product of doing HOYS-CAPS data for V1490Cyg in Tri-colour R, decided to make a stacked image out of it. 30 subs over 6 months.

At least 4 Herbig-Haro objects imaged in this and marked out in the greyscale version.

Object ID IC 5070
Pelican Nebula
Details Cygnus
Mag. 8, 60’x50′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX
Exposure(s) 30x180s R
Capture APT
Processing DSS, Nebulosity, Photoshop

“The Pelican is much studied because it has a particularly active mix of star formation and evolving gas clouds. The light from young energetic stars is slowly transforming cold gas to hot and causing an ionization front gradually to advance outward. Particularly dense filaments of cold gas are seen to still remain, and among these are found two jets emitted from the Herbig–Haro object 555. Millions of years from now this nebula might no longer be known as the Pelican, as the balance and placement of stars and gas will leave something that appears completely different.”

“Herbig–Haro (HH) objects are bright patches of nebulosity associated with newborn stars. They are formed when narrow jets of partially ionized gas ejected by said stars collide with nearby clouds of gas and dust at speeds of several hundred kilometers per second. Herbig–Haro objects are ubiquitous in star-forming regions, and several are often seen around a single star, aligned with its rotational axis. Most of them lie within about one parsec (3.26 light-years) of the source, although some have been observed several parsecs away. HH objects are transient phenomena that last around a few tens of thousands of years. They can change visibly over quite short timescales of a few years as they move rapidly away from their parent star into the gas clouds of interstellar space (the interstellar medium or ISM). Hubble Space Telescope observations have revealed the complex evolution of HH objects over the period of a few years, as parts of the nebula fade while others brighten as they collide with the clumpy material of the interstellar medium.”

Wikipedia

Comments Off on Pelican Nebula TR IC 5070 HOYS-CAPS data

Cave Nebula Sh2-155 / Caldwell 9

9 September 2019|Caldwell, Narrowband, Nebula, News, NGC Summer|

Sh2-155 is a diffuse nebula in the constellation Cepheus, within a larger nebula complex containing emission, reflection, and dark nebulosity. It is widely known as the Cave Nebula. Sh2 designation because it’s part of the Sharpless Catalog (1959) of 312 HII regions. About 2400 light years from Earth and a stellar nursery.

Narrowband filters really do cut through the murky, light polluted skies of Edinburgh so well. Obviously false colour, has to be for narrowband, but can’t decide which is the best so two different tone mappings: SII Ha OIII -> RGB and Ha OIII SII

Object ID Cave Nebula
Sh2-155 / C9
Details Cepheus
Mag. 7.7, 50′ x 30′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX
Exposure(s) 10 x 180s each Ha OIII SII 2×2
Capture APT
Processing DSS, Nebulosity, Photoshop
Comments Off on Cave Nebula Sh2-155 / Caldwell 9

Iris Nebula NGC 7023 / Caldwell 4

29 August 2019|Caldwell, Nebula, News, NGC Summer|

Been meaning to do this one for ages. Not easy because the background gas and dust can be easily lost in the light pollution and noise.

“The Iris Nebula, also known as NGC 7023 and Caldwell 4, is a bright reflection nebula and Caldwell object in the constellation Cepheus. NGC 7023 is actually the cluster within the nebula, LBN 487, and the nebula is lit by a magnitude +6.8 star, SAO 19158.”
Wikipedia

Object ID Iris Nebula
NGC 7023 / C4
Details Cepheus
Mag. 6.8, 18′ x 18′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX
Exposure(s) 10 x 180s each RGB 1×1
Capture APT
Processing Nebulosity, Photoshop
Comments Off on Iris Nebula NGC 7023 / Caldwell 4