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.
Quote:Of course there is a change in mag. with a change in spacing but is there any change in the performance of the coma correction by changing the spacing by screwing the barlow directly to the eyepiece. Or even with the mentioned GSO barlow housing how well does the coma correction elements of the Barlow tolerate different spacings.
15" f/5 Tectron
Mallincam Junior Pro
TMB 40mm Paragon,Leica ASPH zoom,
WO binoviewer w/assorted pairs
"Yeah, well, you know,that's just, like, your opinion, man."
Paul Maxson Celestron C14, Mewlon 250, Orion EON120, Flea3, ASI120MM. Those who say it can't be done need to stay out of the way of those doing it. http://www.sunspot51.com