Archived posting to the Leica Users Group, 1997/01/11
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]This was posted to the Questar list. It is forwarded without emendation. Marc > (Infinet-S-3.3) id QAA02742; Sat, 11 Jan 1997 16:03:51 -0500 (EST) >X-Authentication-Warning: relay1.shore.net: major set sender to owner-alt-telescopes-questar using -f >Date: Sat, 11 Jan 1997 15:56:38 -0500 (EST) >From: Clive Gibbons <gibbonsc@mcmail.CIS.McMaster.CA> >To: alt-telescopes-questar@shore.net >cc: alt-telescopes-questar@shore.net >Subject: Re: (QUESTAR) Re: The Leica of... Questars.... off-topic >Sender: owner-alt-telescopes-questar@shore.net >Reply-To: alt-telescopes-questar@shore.net > >With regards to Mr. Fred Ward, he is obviously someone who had never >before ventured into the realm of astronomical telescopes and thus, knows >little of what he speaks. >1) To take "long exposures" using the scope's drive, without attemping to >correct periodic error in the gear train, and then complaining about >inaccuracy, shows that Ward has never tried this before with *any* >telescope system. >2) To complain about the scope being 1.5 stops slower than it's numerical >f/ratio shows a complete ignorance of the losses involved in any >mirror-lens optical system. Also, griping about vignetting reveals he had >(has?) little comprehension of the Qs optical design. >3) Finally, to use a full-aperture solar filter to shoot the Sun's corona >(HA!) and then grumble about "double images" in all the resulting photos >shows that Ward doesn't understand how the mirror-slap and shutter bounce >of an SLR can cause this effect with long-focus systems that fully damped >and firmly supported. >Then, to go complaining to Questar about all these "defects" is truly >pathetic. >Here's hoping Fred Ward knows more about Leicas (but I wouldn't bet on it!) >;) > >Cheers, > > Clive Gibbons "Building excellence through empowerment > Technician, in a World Class Quality paradigm." > McMaster University. with apologies to S. Adams. > > > > msmall@roanoke.infi.net FAX: +540/343-7315 Cha robh bas fir gun ghras fir!