Carol Lakomiak, Tomahawk WIWriting Sky at Night magazine's astrosketch page since June 2009Moon Sketch TutorialSun/DSO Sketch TutorialCN GalleryPhoto Gallery
"I have been paddling in the shallows of a great ocean of knowledge." - Sir Isaac Newton * * 15" F4.55 Starsplitter Dob & a Denk II binoviewer * * http://peaceofsky.wordpress.com/ Pacheco State Park Fremont Peak
ALL my posts should be considered as opinions shaped by MY experiences and understanding of the facts.
Dan Orion XT8g If your dob isn't broke, fix it anyway. Don't tell me what I want to hear, tell me the truth.
Dr. Willie K. Yee President Mid-Hudson Astronomical Assn.Member RAC, AOSNY, IDA, Astronomers Without Borders, Charlie Bates Solar Astronomy Project
NexStar 50 Expert, Lunar 50 Expert; AL Outreach, Messier, and Sunspotters AwardsCommander Prius Class Shuttlecraft Zhang HengTeeter 13.1" f/4.5 Custom Dob, NexStar8 SE, Meade 80mm f/6 ED Apo, Meade 363 f/10 80 mm, Lunt LS60THa, PST dbl stk
Leica 8x20; Nikon Action 7x35; Vixen Apex Pro 8x42; Orion 15x63; Docter Nobilem 15x60
WO Megrez II 80 FD / APM 107mm f/6.5 / Mewlon 210 on DM-6 + Berlebach Planet
Celestron 8" Nexstar GPS XLT Meade 8" f/6 newtonian on GEM-New GSO Mirror StarBlast 4.5" Dob XT12 IntelliScope Dob with COL Vixen A80MF achro Celestron NexStar 102mm GT OTA
Joseph Cannavo: Teeter in Rocky Mountains!My Scopes/Stuff:16" F5 Teeter/ZambutoTom Osypowski equatorial platform10" F5 LightbridgeMid 70's RV-6Orion 100mm EDMy ATMing:Low Profile Front Collimating Dob/Cell for 16" Conical MirrorFront Collimating Dob/Cell for 16" Standard MirrorDob Driver with novel azimuth friction clutch, and axial (rotating) electrical connection.Red Oak Observing PlatformRed Oak Combination Observing Chair (Post Pending!)
Quote:Check out this picture: LINKWefigure out whether something in concave or convex based partially on the assumption that any light source is "up", a pretty good assumption in our daily life. All bets are out the window for astronomical photographs, where light sources may be coming from darn near any direction.This has nothing to do with aging. I swear that in relatively close-up photographs of the moon or of Mars from orbiters, it seems like I see things the wrong way at least twice as often as the right way, and this has always been true, since childhood.