33 Doubles Observing Projects: Struve 1990

Struve 1990

Morgan Spangle

Star: Struve 1990
Date: 11 June 2006
Seeing: <1-10 Seeing Scale (10 best)>: 5
Transparency: <1-10 Scale (10 best)>: 7
Location of site: Larchmont, NY
Site classification: Bright suburuban
Conditions: Cool, breezy
Moon: Full
Sky darkness: 3.5
Telescope: 23.5cm SCT
Mount: Takahashi NJP Temma 2
Eyepieces: SBIG ST2000XM CCD camera Magnification: n/a

NAME SEP PA NOTES

55.9 62.3 INTERESTING SET; MEASURED BC AT 2.4/27.6

David Jenkins				srvaughn@juno.com
Star: Struve 1990 Date: 12 June 2006 Time: 5:00-7:30 UTC Seeing: <1-10 Seeing Scale (10 best)>: 5 Transparency: <1-10 Scale (10 best)>: 8 Location of site:Orem, Utah USA Latitude, 40.29694. Longitude, -111.69389 Site classification: Utah Valley urban area of 500,000 with strong light pollution due to acorn glass street lights which shoot light up and out – The bane of all local observers. Salt Lake City metro light dome to the northwest at 40 miles. Conditions: Clear, breezy (as can be seen in some of the images), warm Moon: Full moon raising late in observing session Sky darkness: <Limiting magnitude>: 3.5 Telescope: Celestron GPS 11" on APT Wedge Mount: Standard Celestron fork and tripod Eyepieces: Meade Super Plossl – 32mm Diagonal: Yes, Meade 1.25" flip mirror diagonal `Magnification:` Approximately 350X using Nikon Coolpix 4500 and 4X zoom Software: Reduc version 3.62 – Great software from Florent Losse. S33 group member.				Distance: 56.5, PA: 62

Richard Jepeal				richardjepeal@yahoo.com
Star: Struve 1990 Date: July, 14th, 2006 Time:--- Seeing: 6-7/10 Transparency: --- Location of site: `New Britain, Connecticut USA` Site classification: `Urban`Conditions: `----` Sky darkness: `---` Telescope: `8in Celestron Nexstar` Eyepieces: `---Magnification:`53x to 228x				Pleasant surprise. Had this written down as double. Turns out to be a very attractive triple. At 53x, while the primary was sharp, the secondary was blurry. It still did not dawn on me that this was a triple until I used higher (91x) power. Primary looked light-yellowish/orange. Secondary grayish-white, and the C component looked pale orange.