June 06

Eric Graff
Subject: A Unique 'Double-Double' in Hercules
Object Data & Comments: Double Star ADS 10905 (STF 2245) (7.4, 7.4; 2.6"; 293°; pale blue and pale yellow) with NGC 6500 (SAab:; 12.7; 2.2' x 1.6') and NGC 6501 (SA0+:; 12.3; 2.0' x 1.8') a nearly identical pair of distant galaxies separated by 2'27" in position angle 35°/215°; both are elongated NNE-SSW with slightly brighter centers
Observer: Eric Graff
Location: Cuyamaca Mts., San Diego Co., California (4,000 ft. elevation)
Date and Time: 19 June 2006 at 05:40 to 06:20 UT
Transparency: 6.6 NELM
Seeing: Pickering 8/10
Telescope: 6-inch f/6 Parks Astrolight Newtonian Reflector
Eyepiece: 7.5mm Parks Gold Series Plössl (120x, 26' FoV)
Barlow: 2x Parks Gold Series (240x, 13' FoV)
Filter: None
Medium: White 100# index card, No. 2 Mechanical Pencil, Blending Stump, Black Ink