Old 10-05-2015, 03:56 PM
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martyninoz is offline
Join Date: May 2015
Location: Adelaide, SA
Posts: 2
ED100 vs BD1201 for Planetary

Hello everybody.

A while ago I bought a motorised tracker and have been using it with my EOS 600D for moon photography. Unfortunately, the bug has bitten and I am now looking to move into planetary photography.

I have acquired a CCD camera for this purpose and am now looking at refractors.

I have my eyes on the Skywatcher Black Diamond 120/1000 OTA but have also seen an ED100-PRO for about $150 more.

So the question really is, would it be better to have the 120mm/1000 or the smaller 100mm/900 APO? Are the optics on the ED significantly better than the BD to justify the extra $$?

I appreciate any insights to save me from getting the wrong one!

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Old 10-05-2015, 06:02 PM
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dannat (Daniel)

dannat is offline
Join Date: Sep 2007
Location: Macedon shire, Australia
Posts: 3,411
id say yes the ED optic are much better in the long run for only 150 extra

being smaller the ED 100 will cool slightly quicker & be ready to go, it will also likely take 200x magnification [mine did] & the falser colour will not be distracting, at f8 the 120 will show a fair amount of colour on bright stars & the lunar limb
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Old 10-05-2015, 06:51 PM
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Wavytone is offline
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Location: Killara, Sydney
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For planetary...to photograph the planets in full colour the ED100 will be better, yes. However if you don't mind monochrome shots you could put a filter over the BD to kill the secondary spectrum and the result should be excellent. The same works for the ED100, as well.
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Old 10-05-2015, 07:28 PM
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martyninoz is offline
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Location: Adelaide, SA
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Thanks, that helps. I'd like to go for colour so looks like I'll be saving little extra and get the ED.
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bd1201ota, ed100, photography, planetary

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