Thread: pandoras box!!
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Old 01-08-2013, 12:53 AM
Allan_L's Avatar
Allan_L (Allan)
Member > 10year club

Allan_L is offline
 
Join Date: Mar 2008
Location: Central Coast NSW
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Quote:
Originally Posted by Crow View Post
thanks Matt. so this will be a real eye roll moment for you but can I clarify 200x with you. I assume it means magnification? here are the specifications. I appreciate your help and promise to name the meteor I discover in the future Crow:Noeyedeer1 (which I fear is indicative of my football team this year!) PS: we are really excited by your photo!! Sorry about the cut and paste. I understand if you ignore!!


Weight8.16 kgOptical DesignReflectorAperture130 mmFocal Length650 mm Focal Ratio
5Eyepiece 125 mm Magnification 126 xEyepiece 29 mm Magnification 272 xFinderscopeStarPointerMountMotoriz ed AltazimuthAccessory TrayNo tool, quick releaseTripodSteelOptical CoatingsAluminum with SiO2 overcoatCD ROMThe SkyX First Light Edition astronomy softwareHighest Useful Magnification307 xLimiting Stellar Magnitude13.1Resolution (Rayleigh)1.07 arcsecResolution (Dawes)0.89 arcsecLight Gathering Power345xAngular Field of View1.9 °Linear Field of View (@1000 yds)31.39mSecondary Mirror Obstruction43.18 mmSecondary Mirror Obstruction by Area11 %Secondary Mirror Obstruction by Diameter33.2 %Computer Hand ControlFully Computerized / Flash UpgradeableSlew SpeedsNine slew speeds: 3°/sec, 2°/sec, 1°/sec, .5°/sec, 32x, 16x, 8x, 4x, 2xTracking RatesSidereal, Solar and LunarTracking ModesAlt-AzAlignment ProceduresStarSense Automatic Alignment, Solar System Align
Magnification is calculated by dividing focal length of scope by the eyepiece.
Your focal length seems to be 650mm.
I think this is saying you get a 9mm eyepiece and a 25 mm eyepiece.
So your magnifications will be 72x and 26x respectively.

Start with the lesser magnification eyepiece first (the 25mm).
It will be easier to get it centred then switch to the stronger eyepiece for a bigger image (if the atmosphere, "seeing", is good enough).

You can further ramp up the magnification with a barlow lens if/when you have one.

Regards
Allan
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