MarkLeica 8x20; Nikon Action 7x35; Vixen Apex Pro 8x42; Orion 15x63; Docter Nobilem 15x60WO Megrez II 80 FD / APM 107mm f/6.5 / Mewlon 210 on DM-6 + Berlebach Planet
AL MasterObserverC #24
Milton Wilcox R.I.P
-R.J. Discovery DHQ 8" Celestron C4-R on LXD75 ZenithStar 66 ED Triplet Hardin DSH 6" Orion Transporter 70 Sears 60/900mm 10x50's & assorted other binos
Quote: The nice double star 74 Pisci (also labelled Psi 1) was my first target. Its components are mag 5.3 and 5.45, and they are separated by 30 arcseconds. This provided a measure for determining where in the FOV the apparent resolution drops below 255 arcseconds. I found this limit to be - not surprisingly - at 1 degree from the edge. At this point there is some field curvature noticeable, as refocussing pushes the limit of resolution somewhat further towards the edge.
Michael Gilmer - Member of the Meteoritical Society & Collector of Falling Stars.
☄ ⒼⒶⓁⒶⒸⓉⒾⒸ ⓈⓉⓄⓃⒺ - www.galactic-stone.com
Quote: I happen to feel that the impression of sharpness across a certain field of view, is best regarded on a scale of apparent field of view.
"The heavens declare the glory of God"...