Quote:It's human nature to take things for granted. And it is easy, over time, to take the Q's attributes for granted. Today I was reminded of just how brilliant the Q's design is........And just to make sure I was not being overly critical, I took out my Questar. In less than 3 minutes I was observing - what a wonderful difference! .......Anyway, tonight just confirmed that my decision to buy a Questar was the right thing to do.
Clear skies, Erik
Visual astronomer since 1978.
Matthias Wirth 16" f/5
Takahashi FS-102 NSV on EM-10
Celestron 1983 C5
Zeiss, TeleVue and Celestron eyepieces
Nikon 18x70 IF-WP Zeiss Victory FL 7x42 Zeiss Victory FL 10x32
Ex owner of Talscopes- N.A Ex owner of several leaking British sports cars. On and off owner of most types of scopes. Owned by current and only wife who indulges me. New owner of Westport Scope
Quote:Quit your whining. John. In the era of the intro of the Q 3.5, the competing Unitrons were f/15 to f/17, compared your ultra-portable modern f/8 refractor. A 4" f/15 would have been 60" long, compared to the rather short 48" of your 6" f/8, which should be a breeze to set up. And that only bought another inch of aperture, not 3, allowing for the obstructed optics of the Q.Now my turn to whine
Quote: John this kinda looks like a questar..maybe a distance cousin but it keeps good company with my questar.. john
Quote:...powder coated too look like a questar.
Quote:I guess I should come clean. I'm a Questar 7" owner and I've been known to whine;A.) When it's been cloudy for more than three weeks.B.) When the transparency is 4.0 or better, the seeing is good - excellent, and I have to be somewhere at 8 am the next morning.
Quote:Bob,Here is what my Q7 looked like on my picknicktable
Quote:Hi Bob!Great question. It's never really been a problem. During winter months when ambient temperature is well below "out of the case" scope temperature, I typically get the scope out there by twilight and let it cool down with the rest of the air. When I polar align or start observing after dinner, it's ready. Usually stabilizes within a hour, two at most - no more. The most shifting comes in Fall and Spring, when differences between air and ground temperature are greater. On these nights, I experience the mirror phasing slightly out of curve as it attempts to equalize to ambient temperature. Any 6" APO will be less affected in such an environment.Questar puts a lot into their mirrors to counter these effects, namely using "Zerodur" instead of Pirex as a base. It's an option when you order. I highly recommend the Zerodur. The instrument is so well made and so well designed; if the night is bad enough to make the Q7's stability an issue, I probably wouldn't want to be out observing in the first place.I tend to go for my 4" refractor when I know my time is limited, preferring the Q7 for longer sessions. Let me know what you decide. Good wishes ~ Bill
Quote:Nothing compares to that Mystic Purple color scheme.