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Found out about a new DDO. Post a DDO.

Started by SkyMan,

13 posts in this topic

SkyMan

SkyMan

Posted
Posted

I had known for a long time that galaxies were often given a catalogue number starting with NGC (which stands for New General Catalogue). Who knew, that DDO is not only a numismatic contraction, but also an astronomical contraction. I just found out about it today. It stands for the David Dunlap Observatory (in Canada), and galaxies found by this observatory were catalogued with a number starting DDO. Post a DDO in honor of the observatory.

 

1972DDOpcgsMS66rdObvHR005.jpg

 

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lehigh96

lehigh96

Posted
Posted

My favorite DDO has always been the 1943-P Jefferson Nickel DDO "Doubled Eye". Here is my example from my registry set, an MS67 5FS.

 

JeffersonNickel1943-PDDONGCMS675FS1.jpg

 

JeffersonNickel1943-PDDONGCMS675FSDoubledEye.jpg

JeffersonNickel1943-PDDONGCMS675FSDoubledDate.jpg

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coinman1794

coinman1794

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Posted
Finest Known 1960 DDO FS-101 NGC PF69 Roosevelt!

 

1960ddo68-1.jpg

 

Why were you standing on your head to take the first photo?

 

Chris

 

...trying to get the right angle; lettering is not a flat surface, and light hitting from different angles can conceal the strength of the doubling. But that would be more on my side, actually, as LIBERTY is not at the top of a dime ;) Also, I find that Proofs are hard to do close-ups on, without capturing my reflection.

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