Well, my problem is that I had placed the focal reducer at a position where it could not be placed any closer to the OTA's back. I also had used a combination of parts (Celestron's SCT to T2 adapter, a Canon T-Ring and my DSLR T3i) that add up to 105mm of spacing between th...
I mention “Wait” because the FBI conducts a very thorough background check (this includes fingerprint and photograph checking). This can take between nine and 12 months to process. While you are waiting for approval, the gun in question must stay in the previous owner’s possession until pr...
There is a difference between what we know, which is our linguistic competence, andhow we use this knowledge in actual speech production and___,which is ourA.linguistic performance.B.communicationC.comprehensionD.creationE.perception的答案是什么.用刷
I am unable to determine the difference between the Lumicon UHC and Lumicon Deep Sky filters. The product description of the Lumicon Deep Sky filter says its Lumicon's "most popular nebula filter" and claims the same stuff as the UHC. So what is the difference then between the UHC ...