3. Caldwell 23 (NGC 891) – T1 hm Spiral Galaxy Distance 30 million LY Diameter 120,000 LY Discovered by Caroline Herschel in 1783
4. Caldwell 23 (NGC 891) – T2 wf Spiral Galaxy Distance 30 million LY Diameter 120,000 LY Discovered by Caroline Herschel in 1783
5. Golf Ball Cluster (NGC 752) – T1 wf Open Star Cluster Distance 1000 LY Diameter 15 LY Age 1 billion years Discovered by Giovanni Hodierna in 1654, later rediscovered by Caroline Herschel in 1783
6. Galaxy cluster Abell 262 – T1 hm Distance 220 million LY Diameter of cluster: 10 million LY (173 arc minutes) The group of galaxies at the center of this image includes (top to bottom) NGC 703, 708, 705, and 704. NGC 708, at the left of the group, is the brightest member. NGC 704 has a companion, NGC 704B. NGC 709 is slightly above/left of center NGC 714 is at the left edge of image NGC 700 is at bottom right.
7. Galaxy cluster Abell 262 – T1 wf Distance 220 million LY Diameter of cluster: 10 million LY (173 arc minutes) The galaxies are very faint in this wide-field image, but the cluster covers an area of 3 degrees (the middle half of the image). Open cluster NGC 752 can be seen at top edge, left of center.
8. Open star cluster NGC 956 – T1 hm Distance unknown Diameter of cluster: 8 arc minutes (size in LY unknown) Discovered by John Herschel in 1831 The two bright stars at center are apparently foreground stars, a few hundred light years away.
9. Open star cluster NGC 956 – T1 wf Distance unknown Diameter of cluster: 8 arc minutes (size in LY unknown) Discovered by John Herschel in 1831 The cluster can be seen at the center of this wide-field image. At bottom left is open cluster M34, in Perseus.
10. Satellite Galaxy M110 – T1 hm Elliptical galaxy – companion to Andromeda Galaxy M31 Distance 2.5 million LY Diameter 10,000 LY Discovered by Caroline Herschel in 1783 (Was included by Messier in his drawing of M31 in 1773, but he did not record it in his list as a separate galaxy.)
11. Andromeda galaxy M31 – T1 hm Spiral galaxy Distance 2.5 million LY Diameter 135,000 LY Known since antiquity, was recorded by Persian astronomer Al-Sufi in 964 Charles Messier added M31 and its companion M32 to his list in 1773 This high-mag view shows the core of the galaxy and details of the dust lane
12. Andromeda galaxy M31 – T2 wf Spiral galaxy Distance 2.5 million LY Diameter 135,000 LY Charles Messier added M31 and its companion M32 to his list in 1773 This wide-field image shows the spiral arms and dust lanes of M31. M32 is the fuzzy bright spot at bottom center. M110 is the faint fuzzy spot at top right.
13. Sky Safari – A Slooh Production by Kochava Yerushalmit
