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Photograph of stars centred on the star Gamma Cassiopeia, taken by Isaac Roberts using a twin telescope (20-inch reflector & 7-inch refractor) by Howard Grubb of Dublin. Taken with an exposure of 90 minutes on 17th January 1890 at his observatory & home at Maghull, near Liverpool.

Photograph of stars centred on the star Gamma Cassiopeia

1890

Photograph of the Ring Nebula in the constellation of Lyra (M57), taken by Isaac Roberts using a twin telescope (20-inch reflector & 7-inch refractor) by Howard Grubb of Dublin. Taken with an exposure of 60 minutes on 14th July 1887 at his observatory & home at Maghull, near Liverpool.

Photograph of the Ring Nebula in the constellation of Lyra (M57)

1887

Photograph of the Great Orion Nebula (M42), taken by Isaac Roberts using a twin telescope (20-inch reflector & 7-inch refractor) by Howard Grubb of Dublin. Taken with an exposure of 205 minutes on 4th February 1889 at his observatory & home at Maghull, near Liverpool.

Photograph of the Great Orion Nebula (M42)

1899

Photograph of the Double Star Cluster (H.VI.33&34) in the constellation of Perseus, taken by Isaac Roberts using a twin telescope (20-inch reflector & 7-inch refractor) by Howard Grubb of Dublin. Taken with an exposure of 4 hours on 13th January 1890 at his observatory & home at Maghull, near Liverpool.

Photograph of the Double Star Cluster (H.VI.33&34) in the constellation of Perseus

1890

Photograph of stars in the constellation of Cygnus, taken by Isaac Roberts using a twin telescope (20-inch reflector & 7-inch refractor) by Howard Grubb of Dublin. Taken with an exposure of 60 minutes on 14th August 1887 at his observatory & home at Maghull, near Liverpool.

Photograph of stars in the constellation of Cygnus

1887

Photograph of twin galaxies (M82 & 82) in the constellation of Ursa Major, taken by Isaac Roberts using a twin telescope (20-inch reflector & 7-inch refractor) by Howard Grubb of Dublin. Taken with an exposure of 3 1/2 hours on 31st March 1889 at his observatory & home at Maghull, near Liverpool.

Photograph of twin galaxies (M82 & 82) in the constellation of Ursa Major

1889

Photograph of the Andromeda Galaxy (M31), taken by Isaac Roberts using a twin telescope (20-inch reflector & 7-inch refractor) by Howard Grubb of Dublin. Taken with an exposure of 4 hours on 29th December 1888 at his observatory & home at Maghull, near Liverpool.

Photograph of the Andromeda Galaxy (M31)

1888

Photograph of the Whirlpool Galaxy (M51), taken by Isaac Roberts using a twin telescope (20-inch reflector & 7-inch refractor) by Howard Grubb of Dublin. Taken with an exposure of 4 hours on 29th April 1889 at his observatory & home at Maghull, near Liverpool.

Photograph of Whirlpool Galaxy (M51), taken by Isaac Roberts, 1889

1889

Photograph of the Pleides star cluster with nebulosity (M45), taken by Isaac Roberts using a twin telescope (20-inch reflector & 7-inch refractor) by Howard Grubb of Dublin. Taken with an exposure of 4 hours on 8th December 1888 at his observatory & home at Maghull, near Liverpool.

Photograph of the Pleides star cluster with nebulosity (M45)

1888

Photograph of the Dumb-bell Nebula (M27), taken by Isaac Roberts using a twin telescope (20-inch reflector & 7-inch refractor) by Howard Grubb of Dublin. Taken with an exposure of 3 hours on 3rd October 1888 at his observatory & home at Maghull, near Liverpool.

Photograph of the Dumb-bell Nebula (M27)

1888