Update: The long Wisconsin winter has come to an end. Between clouds and not wanting to stand outside when it was 15 °F and below, I didn't get much use in after I last posted. Got it out a couple weeks ago, spend an hour or two outside looking at brighter objects. Then this last weekend packed it up and drove to Southern Illinois for the eclipse.
I found a couple of things using the SynScan controller. Night before the eclipse, being in mid-low Bortle 4 skies, I aligned the scope using the 3-start alignment. I had the "advanced filter" on for alignment stars, and found that there were stars it recommended that were much dimmer than other stars, and were unable to see them until it was darker. Also, some of the stars do not show up in Stellarium mobile, which I found odd. However, after it got dark enough, I did get the 3-star alignment done, and we used the scope for 2-3 hours, and everything it slewed to was dead-nuts centered in the 40 mm Plossl Celestron eyepiece. Great! Eventually the collector fogged up (I've purchased but not yet installed the Celestron dew heater ring) and we were tired anyway, so I moved the tube horizontal, parked the scope with the park on the controller at current position, and went to bed.
Morning we got up, and I took the tarp off. Once the collector had dried off after an hour or two, I popped on the white light solar filter, powered up the scope and told it to point to the sun. And it didn't get the sun in the eyepiece. Odd, I thought, this thing was bang-on all night last night. I got the sun centered and it drifted all day, requiring using the arrow keys to re-center it every 30 minutes or so, as it would be half off the edge of the eyepiece, with the 40 mm Plossl. I was slightly annoyed, but figured maybe the tripod settled in the soft ground overnight, and left it be, adjusting as needed every so often.
It was fun to watch the sun through the scope leading up to the eclipse. During the 3:57 of totality, I popped the solar filter off the scope and 9 of us WOW'D over the view of the Sun's corona, and the awesome prominances visible! After the quickest 4 minutes of my life, my phone eclipse app was saying "PUT ON SOLAR GLASSES!" and I firmly and immediately told someone who's head was heading to the eyepiece to NOT look through the telescope, then grabbed the solar filter and replaced it as the ground around me began to brighten.
What a view that was...
Anyhow, that evening we continued to camp, as we didn't want to drive in the after-eclipse traffic. It was clear, so I powered up the scope. Given the Sun had drifted all day, I figured I needed to do another alignment. I selected 3-star alignment and after again being frustrated by Stellarium mobile not finding some of the stars the controller wanted, shut off the "advanced filter" for alignment, and aligned by some of the brightest stars visible: Sirius, Capella, and Regulus.
Oddly, when the scope slewed to the 3rd star, Regulus, it was way off. Previously, by the 3rd star the scope is usually pretty darn aligned, so this was odd. I got it centered and got an "alignment may be poor" message, but it said it was successful. I told it to slew to Sirius, as I previously found that if I messed something with the alignment up, it wouldn't be able to get back to the 1st alignment star. You think that wouldn't be possible, since you literally centered the scope at it, but somehow it is... Anyway, yeah, it failed to re-center Sirius. After trying again, I figured maybe my finderscope was not aligned and I accidentally picked the wrong alignment star, because for this alignment process I think the finderscope is WAY too zoomed in. No go. Getting annoyed, I pulled out the Telrad I had purchased but not installed, and installed and aligned it. I used Sirius because it's so bright there's no way I could confuse that with another star when looking between the Telrad, finderscope, and eyepiece. Is the star super bright? Then yeah you're on Sirius.
Well, the good news is the Telrad is exactly what I had hoped for. It's the perfect finder for a mount alignment process. The lack of any zoom means there's no possible way to confuse what star you're looking at (assuming it's aligned with the scope properly), and it's super easy to get the scope pointing at the star, even if you guessed the polar alignment and are way off. Perfect! The bad news is the 3-star alignment continued to say "alignment may be poor", and it was unable to re-slew to the 1st alignment star. I kept using Sirius/Capella/Regulus, since they were all visible, seemed plenty far apart enough, and are nice and bright and cannot be confused with other stars. After several more attempts I gave up because my partner had found someone with a campfire and they invited us to join them, and I was getting frustrated and was too tired to stay up long anyway.
Well I did some searching now, and found on a different forum someone saying they got that message. And other people said "yeah, I found if my scope was not polar aligned enough, and the scope wasn't in the "home" position well enough, I could get this." The solution seems to be after it slews to the first star, roughly align the scope by unlocking the clutches instead of using the arrow keys. Somehow, if the initial alignment is too far off, and you use the arrow keys, the controller can give this "alignment may be poor" and not center on stars properly. But by unlocking the clutches and rough centering on that first alignment star, it's way closer on the next two stars and never gives the "alignment may be poor" message. So there's some bad programming in the controller, apparently.
I know, I know, I really need a camera of some sort and a laptop and just do plate solving, but I did want the ability to use the mount without the extra hassle of setting up a laptop. It's annoying that the controller has these issues. At least I know a reason now for next time.
My coworker just bought a big 3D printer for work, so I plan to 3D print a dew-shield for the scope using that, instead of buying one. And I'm going to go ahead and design and add to the dew shield 3D print a fan mount, to use a fan to avoid dew without heat, if possible. But given I'm in the midwest, I know there are times I will absolutely need heat to avoid dew, so I'll be installing that dew heater ring as well. And probably will get a nice wide angle (both TFOV and AFOV) eyepiece at some point. I see lots of praise for the Nagler 31 mm T5, but going to do more reading before dropping $700 on an eyepiece...
Oh, and during the night before the eclipse, one of the items on the "deep sky tour" of the controller I was going through was the Orion Nebula. SO COOL! That's definitely a DSO I will recommend to anyone with a SCT in the future, who's a beginner. Brightest, most detailed of all the nebulas/galaxies we looked at, or attempted to look at, that night, and definitely not a faint fuzzy!
Looking forward to a summer with hopefully many clear nights, and dragging the scope camping with me to dark sky camping locations.