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About Pogo007

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    Ontario, Canada
  1. I believe the 10mm has 7mm ER and the 25mm has 17.5mm ER
  2. Hi Nebula. I can't say for sure but I think it is likely that this would work. The only problem, if it does work, is that you will eventually have to purchase the license for Windows.
  3. Hope someone with more experience than I, which basically means anyone that has successfully collimated a Newtonian, can answer a couple of compound questions I have based on my first and only attempt at secondary collimation of my SkyWatcher Flextube 250. 1) All three of my secondary collimation screws were extremely snug before I did anything and I was only able to comfortably turn them counter-clockwise. Is this normal? Do I need to loosen all three screws first before I can properly start collimation? Should I be turning any screw beyond "snug"? 2) Before collimating, I placed a yellow sheet inside my OTA opposite my focuser tube and I placed a red sheet between my secondary and primary. The view this gave through my focuser tube was of a red circle surrounded by a partial yellow ring (the secondary mirror stalk blocking a portion of this yellow annulus). While independently turning each of the secondary collimation screws counter-clockwise I looked down the focuser tube (both with and without a sight tube installed) expecting to see some change in the shape of the red area (more or less circular) and/or the yellow area (less or more even thickness). I turned the screws no more that 2 complete revolutions. I did not perceive any appreciable difference in what I saw and I turned each screw back (clockwise) to their original tightness before working with another of the screws. Does it make sense that I didn't perceive any change? Should I have turned the screws more revolutions? Should I have loosened more than one at a time? Very confused and looking for your help. Thanks
  4. My environment: running Mac OS X Mojave on a MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports). Your experience may vary. 1) Within Mac OS I installed Parallels Desktop Lite which has a free 15-day trial and includes Windows 10 2) In Windows OS I downloaded the HC and MC loaders and firmware files into a Synscan folder. 3) Since my laptop only has USB C ports I used my USB C hub adapter (see link) to provide two USB 3 ports https://zerolemon.com/products/imempro-type-c-hub-adapter-for-apple-macbook-pro-2016-2017-shipping-to-us-only 4) I connected a USB to serial adapter with Prolific 2303 chipset (see link) for Windows to the RS-232 cable supplied with my Skywatcher telescope. 5) In Mac OS X I downloaded and installed the PL2303 Chip Driver for Mac OS, rebooted my laptop and, when prompted, indicated that the driver was to be used in Mac OS (not sure what would have happened if I had selected Windows). Anyone? 6) I launched Parallels to the Windows 10 OS and then followed the instructions for installing the HC firmware update. Success #1 7) I used the Synscan to select PC Direct Mode in the Utilities menu. ? From Windows 10 OS I launched the MC firmware loader. Success #2. Easy peazy, sort of.
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