What Aperture Would You Need

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What Aperture Would You Need

Postby gordyb » Sun Sep 12, 2010 10:26 pm

to look at asteroids,or to look at pluto and can you see anything in the kuiper belt or the oort cloud or are the objects so small that only the bigger telescopes can venture.
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RE: What Aperture Would You Need

Postby brianb » Mon Sep 13, 2010 12:56 am

Quite a few of the larger main belt asteroids are visible in binoculars, Vesta is even just about visible to the naked eye when at a favourable opposition if you have good dark skies. Pluto is by far the brightest of the KBOs and is just about within the visual range of an 8" scope. Out in the Oort cloud, even giant professional observatories can't see individual objects.

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RE: What Aperture Would You Need

Postby arthur dent » Mon Sep 13, 2010 3:40 pm

Hi Gordy, Brian.

There has been a very active discussion about imaging Pluto on both Cloudy Nights and the Yahoo NexStar Group.

Alex Post (on the CN Forum) has just managed to image Pluto with his 8SE. See the following thread:


Alex really gets the 8SE/NexStar mount to work at AP and most of his results are simply stunning.

Meade ETX-105EC
Celestron NexStar 6SE, 9x50 RACI finder, MRF, powertank & wing thing
Hyperion 8-24mm Zoom + various other EPs
Canon 550D + T-ring, Philips NC880C and 900C webcams for AP (all un-modded)
arthur dent
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