Two things really surprised me last night while I am spending the weekend up here on Mintaka Hill watching the observatory build. A while back I purchased a used Tak FS102 refractor basically for visual use up here in the dark sky. The Tak FS is a fluorite doublet, since discontinued by Takahashi in favor of the TOA and TSA triplet optics mainly for the supposed imaging advantage, the perfect color correction. Anyway the older Taks have a superb reputation and I can’t tell you how amazing the views are through this thing. However, as an imager by nature, I just had to see what the images were like. Now I am used to big optics with self guiding dedicated ccd cameras. This is completely new to me, which is just one of the things so great about this hobby in that you can discover new things all the time…even if it’s not dark matter! I had also acquired in the past a Celestron AVX equatorial mount also for the purpose of goto visual observing. But wait a minute! There is a “guide port” on the mount. So now we have a scope and a mount that can guide. I looked into this at length and of course there is a “Celestron VX” Yahoo group. It turns out that yes you can guide! And you don’t even need to connect the mount to your computer to do it! So next thing was to figure out what to use. This set up was not going to hold much weight so next thing I needed was a guide scope and a lightweight guider. I decided to go with a lodestar guide camera and a small 50mm scope compatible with my set up (shown below). With my Canon 60D which can easily reach focus on the longer FL Tak and a freeware guiding program called “PHD” I was able to test the new platform! I was blown away by how accurate the guiding was for only rough polar alignment. I’m still learning how to fine tune that on this mount. Perhaps more on that in another post. Anyway you be the judge. The stars are not perfect. They may not even be in the best focus since I had to do that on the fly. But I think you can agree that this is going to be a worthwhile activity going forward! So the 2 things I learned that surprised me:
- The Tak FS102 CAN take very good images. Also the field is pretty flat.
- You can guide accurately with the Celestron AVX with no planetarium program and no direct connection from the mount to the PC!