My ISS webpage created with notepad http://jimmyjujames.com/ My ISS passes on youtube https://www.youtube.com/user/jimmyjujames/videos June 20, 2016, 19:28 CDT (UT-5) Temperature: 84 F Humidity: 62 % Sun was 6 degrees above the North-Western horizon. ISS Phase angle = 99 degrees (Sun-ISS-Telescope) A value of 0 indicates full phase, a value of 180 indicates new phase. ISS approached from NW, culminating in SW at 78 degrees altitude at a range of 259 miles. ISS departed to SW This ISS pass was above the trees for about 114 seconds. Collected 329 frames at 15fps with ISS on sensor. Used 287 frames in final avi. Mount: Astro-Physics 900GTO Equatorial Mount The 900GTO has features that allow me to track the ISS in the daylight. No meridian flip needed at zenith on SW to NE passes that culminate in the East. This ISS approach was from the NW culminating at 78 in SW, departed to the SE. Set meridian from 0W to 2E (2 hours east of zenith) Wow! Super Cool mount. Another user said this and I agree, "The mount is so good that you just forget about it during the session." 10'' f4.5 Newtonian TIS DBK41AU02.AS color cam at prime focus 2X Barlow FOV = 9x7 arc-min Satellite Tracker v2.5.1 Satellite Tracker Setup for my Astro-Physics 900GTO Mount with a 9x7 arc-min FOV. Telescope-- Interface Protocol = LX200 Compatible Options-- Preferences-- Tracking Factor = 0 (0 delay between goto's results in about 29 GoTo's per second to mount) You will need to change the following 3 options as you change your eyepiece FOV Options-- Preferences-- Timing Offset Increments Coarse = 0.5 second Options-- Preferences-- Timing Offset Increments Fine = 0.01 second Options-- Preferences-- Alignment Adjustment Increments = 0.5 step Wiring setup: Laptop#1 Controls 900GTO mount and Joystick 5 foot USB to Serial adapter 15 foot serial cable to top Com port on GTOCP3 on mount USB transceiver for cordless Joystick Laptop#2 16 foot USB cable with 20awg power leads. 5 volts at laptop 4.84V at TIS DBK41AU02.AS color cam Cam at prime focus on 10'' f4.5 Newtonian. 9x7 arc-min FOV Laptop#3 16 foot USB cable with 20awg power leads. 5 volts at laptop 4.84V at ZWO ASI120mm mono cam Cam at prime focus on ZWO 280mm f4.67 finder scope 59 x 44 arc-min FOV RoboFocus Firecapture v2.5.05 captured ISS as raw avi movie Gain = 500 Shutter speed = 6.0ms 15 fps Procedure: Set both Laptop and 900GTO mount clocks to within 1 second. Focused and ReCal'ed on Regulus Satellite Tracker: click "Connect" button to connect to 900GTO mount. On 900 Keypad set Meridian from 0W to 2E. Must be done after connect to mount. I think the connect to mount resets meridian back to 0W if it was at 2E before connect. I will be back in the trees before mount reaches 2E in SE. Counter weights below horizon in the West Scope on East-side pointing above the NW horizon. The ISS approach is from the NW. Clicked the Start Tracking button after ISS moved above horizon. Waited for ISS to move above trees ( 50 degrees alt) Here is where a good polar alignment is necessary at 9x7 arc-min FOV On a Good-Day after pressing the "Timing Offset Coarse" button 1 to 6 times, I see the ISS move through the Cam FOV. Then I click the "Timing Offset Fine" button in the opposite direction and hold the ENTER key down until the ISS is back on sensor. Today's daylight pass was barely dark enough to see the ISS on Finder scope Cam. Centered ISS on finder Cam and became visible on 10'' Newtonian. Adjusted brightness. After ISS is on sensor, switched from Buttons to Joystick control An accurate polar alignment will result in less joystick corrections. Post Processing: Virtualdub removed blank and partial frames Pipp debayer GB to RGB Used Center-of-Gravity and aligned avi in Regestax5, saved as 512x512 Closed and re-started Registax51 Opened new 512x512 avi into Registax5, Auto-Aligned and saved as 256x256. VirtualDub deleted poor frames and set final playback fps. TLE used by SatelliteTracker ISS 16172.9515 ZARYA 1 25544U 98067A 16172.95159807 .00004998 00000-0 81194-4 0 9998 2 25544 51.6451 39.2517 0000493 9.1250 96.7029 15.54636321 5570 Quicksat.exe output 33.600 88.600 240. 314 Easy St. 2000 6.5 70 F F T T F *** 2016 June 20 Mon evening *** Times are PM CDT *** 2059 452 H M S Tim Al Azi C Dir Mag Dys F Hgt Shd Rng EW Phs R A Dec 25544 ISS 348 -2.0 19 30 38 78 222 C 267 -3.0 -1 5 254 254 259 3.4 99 12 0 24.6 19 30 38 78 222 C 268 -3.0 0 5 255 255 260 3.4 99 1159 24.6 19 30 40 78 223 C 268 -3.0 0 3 254 254 259 3.4 99 1159 24.5 123456789012345678921234 123456789112345678921234567893123456789412345678951234567896123456789 123456789112345678921234567893123456789412345678951234567896123456789 ISS 16173.9611 NASA ;1 25544U 98067A 16173.96119159 .00016717 00000-0 10270-3 0 9051;2 25544 51.6426 34.2214 0000494 326.8529 33.2592 15.54664560 5724 ISS 16172.9515 ZARYA ;1 25544U 98067A 16172.95159807 .00004998 00000-0 81194-4 0 9998;2 25544 51.6451 39.2517 0000493 9.1250 96.7029 15.54636321 5570 ISS 16172.9327 NASA ;1 25544U 98067A 16172.93270684 .00016717 00000-0 10270-3 0 9047;2 25544 51.6434 39.3519 0000679 324.9728 35.1380 15.54607492 5561 ISS 16172.7542 ZARYA ;1 25544U 98067A 16172.75420821 .00005056 00000-0 82049-4 0 9999;2 25544 51.6452 40.2365 0000516 11.1569 69.2108 15.54634541 5548 2.5 TIANGONG 1 ;1 37820U 11053A 16172.06519559 .00015425 00000-0 16676-3 0 9993;2 37820 42.7623 230.0813 0012944 58.0337 17.7285 15.63275196271037 tum 3.5 EGS (AJISAI) ;1 16908U 86061A 16171.84732192 -.00000077 00000-0 14419-3 0 9994;2 16908 50.0071 208.6838 0011433 251.7497 157.1415 12.44483989 26320 1.5 HST ;1 20580U 90037B 16171.56084127 .00000741 00000-0 35187-4 0 9993;2 20580 28.4693 243.0451 0002549 230.8160 263.7906 15.08399551235478 Thum temperature humidity sensor readout Line, "MeasTime", "MonitorID", "MonitorName", "Temp", "RH" ,"DewPt","Unit","Alarm", "HeatInd" 1513, 6/20/2016 19:28:37, 1.00, "Astro-Physics 900GTO", 84.75, 62.21, 70.38, "F", 0, 89.90 My ISS webpage created with notepad http://jimmyjujames.com/ My ISS passes on youtube https://www.youtube.com/user/jimmyjujames/videos Jimmy Andrews 33.6N, 88.6W