AOadaptive optics
ATMamateur telescope maker
CCDcharge coupled device (electronic imager)
DobDobsonian mounted telescope (also Dobs or Dobbie)
FDRField DeRotator
FPKFremont Peak State Park (favorite site of Silicon Valley observers)
GEGGiant Easy Guider (Lumicon)
GEMGerman equatorial mount
GPSGlobal Positioning System
MakMaksutov (-Cassegrain telescope)
MAPUGMeade Advanced Products User Group
NewtNewtonian telescope
OAGOff axis guider
OTAoptical tube assembly
PECperiodic error correction
PVPictorView (also PView)
RAright ascension
SBIGSanta Barbara Instruments Group (CCD manufacturer)
TSPTexas Star Party
SEDSStudents for the Exploration and Development of Space
SCTSchmidt-Cassegrain Telescope
AFAIKas far as I know
BTWby the way
FAQFrequently Asked Question(s)
FWIWfor what its worth
FYIfor your information
IMHOin my humble opinion
OToff topic
OTOHon the other hand
RSNreal soon now (usually meaning the opposite)
TIAthanks in advance
TLAthree letter acronym
TNSTAAFLthere’s no such thing as a free lunch
WOTway off topic
😉winky smile

Bill Arnett; additions & corrections welcome; last updated: 1998 Nov 10