Last seen: April 9, 2026 5:20 pm
For aerial mapping, Absolutely.?ÿ A 30 second CORS, or 2-3 CORS, good to go, interpolate the CORS to 1 Hz.?ÿ We would depart for job, which could be a...
I love Z12. So cheap you can??t give them away. And mm for mm, identical new TS, T2 and HP 3805 which are also NCV. Add Giant Wild triples for not mu...
The question is are handheld GPS receivers off limits??ÿ I only have post processed gps.?ÿ
Question?ÿ is the QZ a QZ because it??s a research facility, like radio telescope? Or a commune of new age hippies? If the former, I??d give it the ...
@john-hamilton The error reported was bad gateway. So that was probably the WiFi I was on. Fortunately USNO AA was online today and I pulled a...
AA USNO is online for now. But JPL Horizons is now problematic. Is there a new URL for its web interface??ÿ
@john-hamilton Looks like the USNO site has gone down early
Just about any reflector can tap 1500 ft.?ÿ I have 3 big older Lieca triples that stack into a 9 glass array. A triple hits 1000 m. And the 9 glass ea...
I have been using the iPhone i41CX. And I came across ASTRO*ROM for the i41CX. It returns only about 3? different than my software.?ÿ I have been us...
@mike-marks i have timing. Dedicated GPS receiver pps led blinker and using a stop watch. (Actually, iPhone NTP apps receiving LTE signal do quite wel...
@a-harris For the past 8 or 10 years I??ve taken hundreds. Mostly for sport.?ÿ I have an older Astech, and use opus a lot. So I??ve positioned sever...
@a-harris Astro rom accuracy was stated as 2” error thru 2010. Today its output is off about 3”, maybe 3.5”. Not too bad. ...
@a-harris I have several 41s. And the clock accuracy factors have been very carefully determined. The time standard that I use is the PPS output from...
@john-hamilton i41CX is fantastic. And iPhone 15C. Definitely keeps 41CX relevant. I have a favorite cogo program in both as well.
@john-hamilton Astro rom has an internal eph. And as nearly as I can tell it returns az 3.3” out. The site says good to 2” thru 2010. So ...
I have Z12 and Zsurvey. I use opus a lot. Maybe it??s just a more favorable situation in the northeast. I routinely collect 90 min. And I do have to ...
It??s really simpler. I??d never bother with -5-15-35 Visually the average should be automatic 354-44-24 D 354-44-25 R Average the seconds. No bra...
8 AM today, 14-Jul, I re-sent the gps data to opus and it returned just fine. So, it probably was a temporary thing. You should try sending your ori...
FS Dir minus BS Dir = angle Dir FS Rev minus BS Rev = angle Rev (Angle Dir + Angle Rev)/2 Angle Dir 302-12-34 minus 00-00-23= 302-12-11 Angle Rev ...