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Steve's Astro Photos

Sorted chronologically unless otherwise indicated.
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Spectroscopy : 29  

Supernova SN2026aaiv
Spectrum of supernova SN2026aaiv
Type 1a supernova in NGC 7331 in Pegasus
Nova Sge 2026
Nova Sge 2026
Galaxy
Spectra
Galaxy Spectra and spectra of galaxy regions
Click on image for spectra.
Spectra
of Planetary
Nebulae
Planetary Nebulae Spectra
Click on image for spectra.
NGC6888
Crescent
Nebula
NGC 6888, The Crescent Nebula in Cygnus
Background information and spectra
M86
Radial
Velocity
Radial Velocity of M86, elliptical galaxy in Virgo
SS433
Microquasar
SS433 Microquasar in Aquila
A very unusual binary system. Spectra taken show short period changes.
R Aquarii
R Aquarii is an unusual object in the constellation of Aquarius
Background information and spectra.
Spectra
of Wolf-Rayet
Stars
Wolf-Rayet Star Spectra
Click on image for spectra.
Campbell's
Hydrogen
Star
Campbell's Hydrogen Star is an unusual object in the constellation of Cygnus.
Background information and spectra
SS Cygni
SS Cygni, a dwarf nova.
It is a type of cataclysmic variable star which can suddenly increase in brightness at irregular intervals.
3C 273
Quasar
Determination of distance to 3C 273 from ts cosmological red shift.
3C 273 is a quasar (active galactic nucleus) in Virgo
RS Ophiuchi
Nova
RS Ophiuchi nova outburst
Nova
Herculis
2021
Nova Herculis 2021
V1674 Her
Comet
C/2020 F3
Neowise
Spectrum
Spectrum of Comet C/2020 F3 Neowise
M76
composition
Spectral line intensity across major axis of M76 (NGC650/1)
Shows the variation in composition across the planetary nebula
M57
composition
Spectral line intensity across major axis of M57 (NGC 6720), The Ring Nebula
Shows the variation in composition across the planetary nebula.
Nova in Cygnus
TCP J21040470+4631129, Nova in Cygnus discovered on 12th July 2019, reported magnitude 9
Instrument response corrected spectrum shows emission from Hydrogen and Helium
T Corona
Borealis
T Corona Borealis - The Blaze Star
A recurrent nova. It is a binary system of a red giant and a white dwarf.
M1
Expansion
Measued expansion of M1 (Crab Nebula) by doppler shift
P Cygni
P Cygni - A rare luminous blue variable star with a peculiar spectrum
Some lines show both absorption and emission.
DIBs
Revisited
Diffuse Interstellar Bands in the spectrum of Zeta Persei. First detected in 1919 by Mary Heger.
Planetary
Methane
Spectroscopic detection of methane in planetary atmospheres
M42 & M57
Comparison of spectra of M42 (Orion nebula) and M57 (Ring nebula)
M42 is a star forming region and M57 is a planetary nebula - the outer atmosphere shed by an old star.

Sirius
Sirius, Alpha Canis Majoris, Spectral type A0.
Top to bottom: Observed spectrum, RSpec graph, RSpec colour representation
Nova
Delphini
Top to Bottom: Observed spectrum, Analysis, Colour simulation
Analysis using RSpec software gives graph and colour simulation
Jupiter
Methane
Bands
Top to Bottom: Solar Fraunhofer lines, Analysis, Observed spectrum
Analysis shows correspondence with known methane bands
Orion
Nebula
M42
M42 - Top to bottom: Observed spectrum, RSpec graph, RSpec colour representation
Line assignments show the major elements in the nebula
WR136
Wolf-Rayet Star Spectrum. Comparison of observed and literature spectra
Details on image