TEC140 (#216) Leica 17.8...8.9mm ASPH Zoom also barlowed 1.5x/2.0x/2.5x with Baader VIP Modular Barlow WO UWAN 28mm Baader 2" Herschel Wedge with SolarContinuum filter AYO AltAz mount on a Berlebach UNI19 tripod (sold: Zeiss AOII set with Zeiss Abbe 2x Barlow, see Leica zoom vs. ZAOII)
Quote:How does one judge transmission differences that are likely in the neighborhood of 3-5 % when viewing a bright object like Mars? Sometimes I wonder if differences in contrast are confused with differences in light transmission.
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.