Here is a challenge for you Lunatics 
The crater Triesnecker is known for its beautiful series of rilles. The challenge is not the rilles but the craters F & G. If you are able to see those craters, try for the craterlet in between them. If you are able to see it, can you detect that it is actually a double craterlet? If you succede in nailing down this high resolution target, please state instrument, maginfication and observing conditions.
Keith
The crater Triesnecker is known for its beautiful series of rilles. The challenge is not the rilles but the craters F & G. If you are able to see those craters, try for the craterlet in between them. If you are able to see it, can you detect that it is actually a double craterlet? If you succede in nailing down this high resolution target, please state instrument, maginfication and observing conditions.Keith
Scopejunkie
40 year old restored C14 with recirculating cooling w/Skywatcher DOB GOTO Conversion (CPC14)
Synscan DOB mounted Sky-Watcher Evostar 150mm/1200mm ED Refractor
"Rescued" Craig's List Orion 120mm/1000mm Refractor
USAF Vet
