October 18, 2020
After selling my EVScope recently - you can read more about that choice below - I sold a few other items and wound up with a nice chunk of change. I started feeling a familiar temptation, one I've described often in these pages. Should I buy a big telescope that, yes, wouldn't cool down quickly enough to use outside of summer, and yes, might struggle with dew or collimation, but - but! - if conditions were just right, could show me more of the universe than my refractors currently reveal?
One option after another came to mind as I struggled to settle my one-year-old at night, and one after another I knocked them down. Visions of what I might see with a much bigger telescope clashed with visions of that telescope gathering dust in my closet while I walked out the door with another small refractor. The truth is, I have to walk too far and observe too quickly for anything other than a refractor to make much sense (except perhaps a Hubble Optics reflector, but I worried about setup time).
In the end, I decided to double down on what I already have, and add a little variety to my refractor lineup. I really wanted a telescope that's even more portable than my TV-85, for nights I'm feeling tired, want to go further afield, or don't have enough faith in the atmosphere to haul out a bigger instrument. And I wanted a refractor that's a little better in red wavelengths than my FC-100DC, and maybe just a bit more attuned to planetary observation. No major leaps, then, but a bit more versatility and a bit more variety.
My first purchase was a Takahashi FS-60Q. I found what seemed like a good deal and couldn't resist pulling the trigger. The 60Q screws in half, so it fits neatly in a small backpack with my VAMO traveler mount. It even comes in two formats: a tiny, do-everything version with a very short or "fast" focal ratio, and a long "Q" version that's "slower" and has much better color correction. That's the version I'll use - screwed in half, as I carry it on my back.
When the telescope arrived, the optics were in perfect shape but the body had a couple tiny nicks - imperceptible at first glance - and the dust cap didn't fit quite as snugly as I'm sure it once did. What's worse, I quickly found that I needed a long list of expensive accessories to actually use the telescope. After a couple weeks and a lot of headaches, I finally had everything assembled and ready to go. It was a cold night with below-average seeing: exactly the kind of evening that didn't seem to justify dragging out a bigger telescope. The weight of my whole setup was almost laughably light as I excited my building; I could barely feel it at all. I could get used to that . . . .
I found that same spot next to the church where I'd set up my APM a week or so ago. It took me just a couple minutes to unpack my gear, although I have to say: screwing the little telescope together is an extra step that can be a bit awkward in the dark. The sounds of traffic were also a little too close for my liking, and I wished I had walked on down to our nearby park. Yet it was late, and this was so much better than nothing.
Mars was now right at opposition, and wow did it even look big - even through the little telescope. To my delight, both dark albedo features and the south polar ice cap were immediately obvious on the planet, and the seeing didn't seem that much worse than average (owing, perhaps, to the smaller aperture of the telescope). I could make out Mare Cimmerium, clear as day, and I think maybe - just maybe - the long, thin outline of Hyblaeus. The Curiosity rover, the Insight lander, and even Viking 2 were all in the picture, in a more or less vertical line across the planet.
After about half an hour of ogling, I packed up. The view was much dimmer than it is through my bigger refractors, but the detail I could make out was truly impressive for such a little telescope. The one drawback: I can't reach focus with any of my Delos eyepieces using the telescope. I suppose that's okay; they're really too heavy for a really portable setup.
Then, last night, I returned to the church with my FC-100DC. Atmospheric seeing promised to be better than average, but it was immediately obvious from the halos around streetlights that transparency would be anything but. This time, I nearly convinced myself to keep walking to the park, but again it was cold, I was tired, and I wanted to go to bed on time. What a joy it's been to observe Mars high in the sky in the evening, rather than the (painfully) early morning!
Strangely, I happened across much the same region of Mars. While the planet was a good deal brighter than it had appeared through the FS-60Q, the transparency was so bad that I spotted only the tiniest hints of additional detail (usually, it's the seeing that limits planetary observation). Once again, I enjoyed the view for about half an hour, watched a deer walk daintily across the sidewalk, and then packed up. Hard to believe that I can now get six hours of sleep after observing Mars!
October 6, 2020
Opposition! What a word, for Mars observers. Earth is directly between Mars and the Sun in exactly one week, and it's in a part of Mars's orbit that takes it especially close to our planet. We won't get a view like this for 15 years or so, and we haven't had one like it since 2003. Technically, Mars was a little closer in 2018, but as I recall it didn't get very high above the horizon then for Northern Hemisphere observers, and a global dust storm - more likely when Mars is relatively close to the Sun - thoroughly spoiled the view. At the time, my telescopes showed only a fuzzy orange ball, with just the faintest hint of dark albedo features (and that was probably my imagination). I resolved then to be ready for 2020, and I certainly have been. This week, I explored the planet with my Takahashi FC-100DC and APM 140, and wow: what a view.
I should begin by saying that I also observed Mars in single-digit (Celsius!) weather on the morning of September 22nd, but also the seeing was forecast to be average, the transparency of the atmosphere left much to be desired. There were odd halos around everything: street lamps, the Moon, and certainly Mars. I could only make out four stars in the Trapezium with the APM, and albedo features didn't pop on Mars as they can when the atmosphere is stable and clear.
When the sky cleared again on October 4th, I decided to take my 4" Takahashi to the field. Mars rises early enough now for me to step out in the late evening - just before midnight - which typically allows me to sleep more restfully (albeit still for only four or so hours). This time, transparency was a whole lot better, but seeing was about the same: not terrible, but by no means good.
Albedo features were stark and obvious on the planet, however, and I wished I'd taken a sketch pad. I was unhappy with the iPhone drawings I attempted to take on other nights, so I opted not to draw one of those - maybe a mistake, but it did give me more time to drink in the view at the eyepiece. The Moon had a hint of that "watery" look it can take on when the seeing is mediocre, but still: I had a nice long look at Mare Crisium at lunar sunset. Jupiter and Saturn had long since set, and I had a pang of sadness: I'm unlikely to observe them for a good long while. Mars will make up for it!
Then, tonight, the seeing promised to be above average. I'd hoped to observe in the evening again, but unexpected clouds ruined that plan. By 3 AM the sky had cleared, and out I walked with my APM 140. To my alarm, Mars was already lower in the sky than I'd anticipated, and I feared it would be lower still by the time I arrived in my preferred observing site. I hadn't walked far when I noticed a dark alcove beside a church I frequent, and it occurred to me that it would afford a great view of the southern sky. So, I abandoned the field I normally visit for that alcove: a high risk gambit, since the field is a sure thing and it seemed entirely possible that there might be currents from nearby buildings to ruin this spot. Worse: the church is right next to the National Cathedral, and I worried: could security kick me from the grounds?
But no, this time it all worked out. I found a nice corner to settle down, and when I turned the APM to Mars it was full of wonderful detail. The entire southern hemisphere of the planet seemed dark, relative to the rest, with spectacular, linear features that helped me realize how nineteenth-century observers could have imagined a network of canals on the planet. The south polar cap was remarkably bright and clearly defined, and I could just - just - make out the white clouds of the north polar hood on the limb of the planet.
Mars reaches its closet approach to Earth next Tuesday at 10 AM EST: a scant 62,069,570 kilometers (by astronomical standards, a stone's throw). It was quite strange to see the planet so big and bright, entirely illuminated by the Sun. I felt it was almost too bright for the APM, strangely enough, at least at 217x (the highest magnification I felt I could use with a manual mount). Still: what an unforgettable view.
The waning Moon was nearly at zenith, and in good seeing it also provided a spectacular view. Yet because I wanted to keep switching to Mars, I didn't adjust the height of the tripod - and that made for a very uncomfortable lunar viewing experience (painful, in fact, because of a worsening neck and back injury). I captured some quick pictures without being able to fully stabilize my old phone, and they actually turned out a bit better than I'd hoped. A testament to the capabilities of the APM in an accommodating atmosphere.
By next week we will be on the downswing of this year's opposition, and it already saddens me to think how long it will be before we have a similar view. What will the world look like then? With how quickly things seem to be changing - often, it appears, for the worse - it seems impossible to guess. With any luck, I'll still have this blog - and I'll still have a telescope as good as the APM 140.