21 Oct 2006 TIMPA, Avra Valley, AZ (map)
12x36 Canon Image Stabilized Binoculars
Small round patch with no resolved stars, easy to find, fairly bright
27 Aug 2005 TIMPA, Avra Valley, AZ (map)
46cm f/4.5 Deep Violet
Very rich, bright, one of the best globulars! fully resolved and dense at the core, a number of brighter members scattered along the edges frame the cluster well
12 Sep 1830
A most superb cluster; round; stars extremely small/faint; 12, 13, 14m; they are evidently globularly arranged, and not internally condensed towards the centre more than the spherical form would make them appear to be; but in the middle they blend into a blaze of light. It is like a heap of fine sand! With 9 inches aperture I can just see the stars; with 6 it is resolvable.
11 Sep 1760
Nebula without star in the head of Aquarius, its center is brilliant, & the light surrounding it is round; it resembles the beautiful nebula which is situated between the head & the bow of Sagittarius [M22], it is seen very well with a telescope of 2 feet, placed below the parallel of α of Aquarius. M. Messier has reported this nebula on the chart of the track of the comet observed in 1759. Mem. Acad. of the year 1760, page 464. M. Maraldi has seen this nebula in 1746 while observing the comet which appeared that year."
Rev. T.W. Webb
Hardwick, Herefordshire, England (map)
94mm f/18 Tully Achromat
Beautiful round nebula diam. 5' or 6', showing with 3 7/10 in. a granular aspect, the precursor of resolution. With 9-in. spec. resolution evident the margin seems to diffuse itself away, probably in rays. JH compares it with a heap of fine sand, and considers it to be composed of thousands of 15mg. stars. Sm. observes that ""This magnificent ball of stars condenses to the centre and presents so fine a spherical form, that imagination cannot but picture the inconceivable brilliance of their visible heavens, to its animated myriads.
12 objects found within 120'
Drawings, descriptions and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission. Use for non-profit and educational reasons is generally given on request.
Positional and some physical information is from the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
Additional object data from the SIMBAD database, operated at CDS, Strasbourg, France.
The Digitized Sky Survey was produced at the Space Telescope Science Institute under U.S. Government grant NAG W-2166. The images of these surveys are based on photographic data obtained using the Oschin Schmidt Telescope on Palomar Mountain and the UK Schmidt Telescope.
Dark nebulae data from E.E. Barnard, A Photographic Atlas of Selected Regions of the Milky Way. Ed. Edwin B. Frost and Mary R. Calvert. Carnegie Institution of Washington, 1927
Object descriptions of Rev. Webb from Celestial Objects for Common Telescopes sixth edition, Rev. T.W. Webb, 1917, edited by Rev T.E.Espin.