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Old 18-11-2009, 07:53 AM
Dennis
Dazzled by the Cosmos.

Dennis is offline
 
Join Date: May 2005
Location: Brisbane
Posts: 11,824
Nice going Richard. SkyTools gives the following data for the 4 brighter satellites set for 17th Nov at 11:00pm AEST.

Name……Mag….PA°……Sep"
Ariel…….14.4….358.3…..4.6
Umbriel…15.1….343.3….18.2
Titania…..14.0….346.3….28.8
Oberon….14.2….149.3….13.2

In terms of your ‘scope, I created a 10” F5 Dobsonian in SkyTools and it generated the following report for its capabilities:

10" dob Report

Telescope type: Reflector
Aperture: 10.0 inches
Focal length: 50.0 inches
Focal ratio: 5.0
Mounting: Equatorial
Optical condition: a little dirty

Dawes resolution limit: 0.5"
Typical practical visual magnification limit: 550
Recommended eyepiece magnifications: 36, 64, 250 plus 2X Barlow
Typical limiting visual magnitude: 15.5

6 x 30 mm Finder:
Field of View: 5.0°
Limiting visual magnitude: 9.5

Eyepiece Mag FOV Exit Pupil Limiting Mag.
Plössl 11mm 115 26.0' 2.2 14.5
Plössl 11mm 2.0x 231 13.0' 1.1 14.9

So in theory, it looks like Titania and Oberon with their greater elongation would have been ideal candidates for you to have observed!

Cheers

Dennis
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