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Aperture for Planetary imaging


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#1 Tony

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Posted 04 December 2007 - 12:35 PM

I have an ETX 125 which produces wonderfully sharp images visually, a little slow on photography. I also have an LX90 8" that I use for deep sky imaging. Which would produce best results with the LPI for a subject like Mars when using a 3x tele-extender? Does larger aperture always rule?

#2 Mark Sibole

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Posted 04 December 2007 - 08:56 PM

For most planetary work a larger telescope will give better results.
But the ETX 125 is more than capable of doing fine planetary work.
Most planets are bright enough even with a 3 times barlow and exposure times should be under 1 second maybe even below .5 seconds.

Mark
Mark Sibole
MTSO Observatory
Fife Lake, Mi.

http://astronomy.qteaser.com

#3 Tony

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Posted 06 December 2007 - 08:24 AM

Thanks Mark, I'm just so impressed with the sharpness of features on the Moon with the EXT, its lighter weight and convenience is tempting to use it. Both are really good products!




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