Keeper of the Swamp Gas Observatory "This R2 unit has a bad motivator" AR127, CG4 CGE1100 1984 tasco 60mm 49TR F/13.3 refractor 1976 Vixen Polaris 80mm F/15 refractor Denkmeier Big Easy BV'er Astro-Tech Titan 38mm 70* Astro-Tech Titan 20mm 70* Astro-Tech SR6 12mm 60* Meade MA25mm Jap. Meade MA9mm Jap. TMBpII 5mm ES 1.25" FX
Quote:I have never seen that in my TSA 102. I could check my notes but I think I would remember seeing color while in focus on any object. I've noticed that some eyepieces - even quality eyepieces - may produce a bit of color fringe on the Moon when you move the Moon's edge near the edge of the field of view. Perhaps that's what was happening?
FH Vixen 80L, FH 4" f/11
Bill The opinions expressed herein are solely mine as an amateur astronomer hobbyist & consumer. Information herein was correlated from experience, discussions with others, & research from multiple sources freely available at time of posting. All reasonable care & skill was used, but no warranty is made as to accuracy, & liability cannot be accepted for errors/omissions. This is for information only and not intended nor implied to be a substitute for professional advice.
Matt in Oz Takahashi Mewlon 210 F11.5 = 2415mm Takahashi TSA120 F7.5 (out on loan) = 900mm Takahashi FC76CSV F7.5 = 570m Takahashi FS60CB F5.9 = 355mm