"I like to watch"
Quote:Not crazy about this term but I see they have a $499 version of the SV 4" f11 with a single speed crayford and a $699 version still with the dual speed R&P. Are there any updated reviews on this refractor? I am tempted but already have four in the 90 to 102mm range.
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.
Celestron Nexstar 102GT & Vixen A80Mf (mounted on Meade LXD75 and iOptron CubePro 8200 respectively) Bresser Hunter 7x50, Meade Adventure 10x50
Quote: One of the Celestron 6" f/8 Achromats likely a better choice as when you stop it down to 4" it is actually slightly better at f/11.9, and then when you open it to full aperture it of course is much better for DSO.
"You're not afraid of the dark, are you?" - Riddick "The best scientists are humble. They seek to understand, not to ensure their legacy, but merely to understand." - Mori
ALL my posts should be considered as opinions shaped by MY experiences and understanding of the facts.
FH Vixen 80L, FH 4" f/11
Quote:Personally I had now the RS100 Tal, last model, and the 120ED SW in hands, owned the vixen 100F10.Lastly on saturn the 120ED and the tal 100 exhibited fine results but with actually no significant different results about the accessible features.I have to compare this also on venus where the 100RS shows already fine banding structure on the atmosphere.I donot agree with forumers here about the fact that 100mm aperture is confidential or too small.This is with these kind of apertures that visual observers may train their vision with acurate optics in order to go deeper and deeper on a planet image.I donot know what is this "planet killer" 100F11 but surely not outperforming what I tested already.Stanislas-Jean
--------------------Clear Skies, PJ Refl.- 203/1420; Refr.- 110/616, 75/500; Bino.- 15X60, 10X50, 8X30 __________________________________________________
Quote:"achromats" are not planet killers IMO. I have had a 4" f11 and it had plenty of color on the planets. The MV-20 filter improved the situation but, did not get rid of the color and degraded the image compared to an apo. I recommend a used 4" ed100 if you want to get a cheap refractor. They cost around $400 to $500. Or an f6 to f8 reflector on an equatorial will work. Dobs will work but require wide field eyepieces, or you will lose the object at high powers. Good wide fields are expensive and I personally would have a hard time buying eyepieces that cost far more than the telescope. From personal experience, I don't care for the cheap wide fields as they are too much work to see through as well as a source of frustration. YMMV.
Quote:In former times there was a Vixen 102L but that was f/15...
Quote:Wow, that's one long OTA
Quote:The TAL achromat refractors seems not to be Fraunhofer but Steinheim refractors