We've had some clear skies over the past week, and of course for me that involved hauling my telescopes outside. With Jupiter and Saturn high above the horizon early in the evening, now is a great time for planetary observation. I set up my Takahashi FC-100DZ on our rooftop one night, but although it was convenient - and the National Mall looked spectacular in the distance - plumes of heat rising from our building marred the view. Jupiter was a boiling mess, and Saturn looked only slightly better.
Smoke from the west coast wildfires moved in early this week, so the transparency of the sky plummeted. Yet seeing was above-average, and - knowing that a little haze in the sky can sometimes improve planetary views - I stepped out anyway, Takahashi in hand. I mount the telescope on a DiscMounts DM-4, and although the mount should easily be able to hold the Takahashi with minimal vibration, so far its stability doesn't compare to that of the AYO II I recently sold - even on my heaviest tripod. Perhaps I need to play around with the tension? I suppose I'll keep experimenting.
I wasn't prepared for the thickness of the wildfire smoke at high altitude - yes, that's more than a little depressing - and so Jupiter and especially Saturn were dimmer than I'd anticipated. Yet seeing was, at times, phenomenal. All of Jupiter's moons were visible, and all looked like clear disks of varying color and size. Orange Io and giant Ganymede were especially easy to pick out at 177x, and for once I wished I had more magnification (unfortunately, I'd left my Nagler zoom eyepiece at home).
On nights of bad seeing, one two dark belts can be visible on Jupiter. Now, I saw some spectacular detail. Not only were the two northern and two southern temperate belts plainly visible, but I could make out delicate, at times feathery texture all along each belt. I lingered a while on that view. Saturn, unfortunately, was less impressive: the smoke was just too thick to permit more than a dim view.
On a night with higher transparency, I walked out with my EVScope. I confirmed what I'd long suspected: in a light-polluted urban sky, brightening at the edges of the view precludes long exposures. While you can still get impressive urban (!) views of many nebulae, star clusters, and galaxies, the telescope performs much better when the light pollution isn't as bad.
The comparison above shows what the EVScope can do under a suburban sky (top) and in ideal conditions under an urban sky (bottom), with similar exposure times. It should be stressed that conditions for the bottom image were truly ideal: the nebula was near zenith, there was no Moon, and transparency was excellent. Still, it's clear that the telescope goes a bit deeper when the light pollution is lower. Of course, I also could have had a much longer exposure under that suburban sky, had I wanted to do that.
All in all, two good nights of very different observing - and one pleasant view from our rooftop.
Another clear night on the Atlantic Coast, again with good seeing (but mediocre transparency). Once again I quickly set up my EVScope, and this time I had eyes on the galaxies in the Big Dipper, towards the north, and the Nebulae around the galactic core in the south.
The galaxies turned out to be a little disappointing, partly because the EVScope's "enhanced vision" - its image-stacking mode - kept cutting out after just a few minutes. I've had a spotty and unpredictable wifi signal here, which might be to blame. Light pollution is also worse towards the north, and the Big Dipper was low on the horizon.
The nebulae to the south, however, were nothing short of spectacular. Below (clockwise from top left) are the Lagoon, Omega, Trifid, and Eagle nebulae, in five- to 10-minute exposures. What really strikes me is the amount of subtle detail in each of these short exposures, especially the dark lanes weaving through each nebula. I took all of these shots, collectively, in about 30 minutes - and then packed up my telescope in around 10 seconds.
So, another successful night here in Lewes, Delaware. Now it's back to our light-polluted skies in DC, where my next targets will probably be Jupiter and Saturn.
It's been boiling hot and cloudy at night through much of July and August in DC, but this week we escaped to the Atlantic coast. I asked my five-year-old daughter which telescope I should bring, and though Jupiter amd Saturn are high and bright right now she was adamant: the one that would give the best views of nebulae and galaxies. Though I was tempted to bring my TEC 140, the EVScope was the clear choice.
I set up the little telescope beneath skies in Lewes, Delaware, that were just about dark enough to reveal the Milky Way. Seeing was really good and transparency was about mediocre. While lying on a hammock in the sun room, I controlled the EVScope and slewed it from one target to another, checking its progress on my phone. You just can't beat that convenience.
When there's a lot of light pollution - as in DC - I quickly notice a brightening at the edges of the screen when taking EVScope exposures that are more than a few minutes long. No such trouble here in Lewes, where the light pollution is not comparable to what it's like in DC. I realized things were different right away, with this exposure of the Whirlpool Galaxy. I've written this before, but wow what a thrill to set up a suitcase-sized telescope and, within minutes, observe nebulae in a galaxy 30 million light years away!
The more I use the EVScope, the more I find myself thinking that telescopes like it represent a huge part of the future of amateur astronomy. Light pollution is unlikely to get much better any time soon, and attempts to reduce future warming by increasing the opacity of the atmosphere are becoming increasingly plausible (this is known as solar geoengineering). Electronically assisted astronomy (EAA) will help observers overcome these obstacles - while giving them views of the distant universe that simply can't be matched with traditional optics (at least not in a portable package). The technology will only get better, and I can imagine telescopes that can switch seamlessly between modes ideal for Solar System and deep space object observation.
While the EVScope can deliver impressive views within the biggest cities, it dawned on me last night that it really comes into its own under darker skies. Perhaps it's no surprise that even EAA follows the same principle as traditional astronomy: the darker the sky, the better the view. The EVScope only reduces - enormously - the usually extreme difference between dark-sky and polluted-sky observing.
For example, I've been trying to get a good shot of the Dumbbell Nebula for the longest time in Washington, DC, but whenever I tried I ended up with little more than a disappointing blob. But just look at the view after just 10 minutes in Lewes. To me, the level of detail and color is nothing short of phenomenal. And what a thought: the Dumbbell Nebula is illuminated gas released by a red giant star before its collapse into a white dwarf (in this case, the largest white dwarf known to astronomers). This is what our Solar System could look like in six billion years or so.
So yes: when it comes to the EVScope, it's hard to beat the views. And it fits in a tiny corner of my car's trunk, tripod and all!
I've written about the EVScope and Electronically Assisted Astronomy (EAA) quite frequently in these pages. I was skeptical at first - partly because my EVScope had a technical problem - and only came around slowly. Only last night did I become an enthusiastic supporter.
I stepped out on a warm, breezy night with the EVScope in its backpack. Transparency and seeing were both around average; there was no Moon. When I reached our nearby park, I set up in all of 30 seconds. I decided that my first target would be the Eagle Nebula, which I've never glimpsed through a regular telescope. The galactic core was lost in light pollution over the National Mall - the sky seemed closer to white than black - so I wasn't optimistic.
And yet! When the EVScope found its target - in just a few moments - and started gathering light, a multitude of stars snapped into view, and then the nebula. After a couple minutes, light pollution started to cloud the view - I haven't tried to tinker with the settings that could help me resolve that issue, not yet - so I stopped the exposure after eight minutes or so. I was left with this:
In the dark, on my phone, it looked spectacular. Look! There are the pillars of creation - star-making factories so memorably imaged by the Hubble Space Telescope - somehow visible from downtown Washington, DC, just nine or so minutes after setting up in an urban park. This image does it for me - I like my nebulae ghostly and ethereal - but with a little image processing, even more detail pops out (see the picture at the beginning of this post).
Now it was on to the Trifid Nebula nearby, it too lost in downtown pollution. Not for long! Again, I'd never seen it with a regular telescope, yet again, it didn't take long to pop into view through the EVScope. This image I like a little less; the unprocessed version doesn't quite bring out the blue. Still, getting this detail so easily in the middle of a city feels nothing short of miraculous.
Then it was off to the Ring Nebula which, of course, never fails to impress - albeit in very different ways through an optical versus an EAA telescope. Whether because of a software update or an unusually transparent sky - I suspect the former - I was, for the first time, able to see the white dwarf at the heart of the nebula. Seeing that would require an enormous regular telescope - too big for my car - and a very dark sky. Imagine my wonder at glimpsing the dead star from the city: our Sun's future, six or seven billion years from now.
I didn't have much time left, but I wanted to see how far I could reach. I turned to NGC 5907, a galaxy marginally larger than our own, around 54 million light years distant. I could only take a short exposure - I really did have to leave - but there: an edge-on spiral galaxy that I would never have been able to observe even with my TEC 140. The light in this picture left its source not only after the dinosaurs went extinct. What a thought!
I packed up just as quickly as I set up, and then a pleasant walk home with my backpack. It is simply remarkable to see so much so easily. I've often seen the EVScope's hardware discussed and praised, yet what really stands out to me is the software. If only other mounts, carrying regular telescopes, were so easy to use.
After a surprisingly cool spring (in the context of global warming), it's finally getting hot here in Washington, DC, and with summer comes better seeing. It promised to be above average on the night of the 18th. As Brood X cicadas burrowed out of the ground all around me, I walked over to my nearby church, refractor in hand. I might have been tempted to take the TEC 140 had that not been such a chore last time I stepped out, and anyway all I really wanted was a nice look at the setting Moon. The Takahashi was an easy choice.
It never ceases to amaze me, the endless varieties of turbulence that the atmosphere has to offer. After turning to the Moon, it was clear to me that if seeing was better than average, it would also preclude really detailed iPhone pictures. There was an undulating quality about the atmosphere. Parts of the moon would roll about, as if under waves lazily passing on their way to shore. While it was easy enough for me to see, with great clarity, what was underneath those waves, I knew that my phone would blur the slowly changing view.
Still, what a view it was! At low magnifications - 46x, with a Delos eyepiece - I couldn't notice the waviness of the atmosphere, and the detail was absolutely staggering. The Moon had a three-dimensional quality, and with almost zero false color I could just about make up the subtle shadings and - I thought - differences in color across the lunar surface. It's hard to describe, but the Moon looked likely a rich and fully realized world through the eyepiece - and I could almost pretend that I was somewhere in its orbit. Clearly visible earthshine on the otherwise unilluminated half of the Moon only added to the effect.
When I increased the magnification - up to 177x, sticking with Delos eyepieces - the view stayed sharp, but those remarkable differences in tint and hue were far less obvious, and turbulence detracted from that spacewalk effect. I took some pictures anyway, and what sticks out to me is that those different colorations are just about visible in them: a testament to the superb color correction of the FC-100DZ.
After about 45 minutes, the rustling around me became impossible to ignore - was it rabbits, or something else? - and I packed up, content with yet another breathtaking expedition to the Moon, courtesy of the Takahashi.
Everybody approaches amateur astronomy in different ways, but for me - and many others - the most difficult thing about the hobby is that you always wonder, no matter how sublime the view: what would I see if I had different equipment? Usually "what would I see" means "what more would I see," and usually "different" means "better" - and that means that many amateur astronomers, at least at some point, embark on a long, frustrating, expensive quest for new telescopes, new mounts, new tripods, new eyepieces . . . the list goes on.
I've been on that path for quite a few years now. Yet when it comes to telescopes - or more specifically, to optical tube assemblies - I reached the end this spring. For a long time, I dreamed of someday - somehow - being able to own a truly world-class, medium-sized refractor. I long had my eye on the Telescope Engineer Company (TEC) 140: an American-made, oil-spaced triplet of uncompromising optical and mechanical quality that, while portable, easily outperformed much larger telescopes. I didn't think I'd be able to afford it for a very long time, but then I realized that although I'd slowly cobbled together a rather large collection of telescopes, I was really only using three of them (my EVScope, Takahashi FC-100, and APM 140). If I sold my telescopes and some other gear for the right price, I might just have the foundation I needed to pursue a used TEC 140.
Precisely as those thoughts entered my mind, a rarely-used TEC 140 ED, in like-new condition, popped up on the used market for a daunting but reasonable price. I took the plunge, and then went on a truly exhausting campaign to sell everything I could spare to recoup what I'd spent. Some of what I sold, I know I will miss for a long time. I ended up parting with my FS-60Q, TV-85, and APM-140, and each loss stings in a slightly different way. I've had unforgettable memories with the TV-85 and APM-140 in particular, but upgrading equipment is not for the sentimental.
In the end I earned precisely as much money as I spent on the TEC 140, so my guilt was mostly assuaged when it arrived. Comparing it to the APM 140 was instructive and ended up highlighting the virtues of both telescopes. The TEC 140 is, first and foremost, slightly but meaningfully heaver and bulkier than the APM 140. Its focuser is more robust, its finish is of clearly higher quality, and its tube ringers are easier to manipulate. With that said, the APM's focuser is just as buttery smooth, and I actually find its sliding few shield a little easier to manipulate. It's not a tossup - the TEC 140 is clearly mechanically superior - but the APM holds up surprisingly well when you consider that it costs less than half as much (during sales, more like a third as much).
Because the TEC 140 is that much bulkier than the APM 140 and uses a Losmandy dovetail that I didn't want to replace, I needed a new, sturdier mount. That's also because my AYO II mount had, after just a year, started to develop an unacceptable amount of slippage on one side. So, I scraped together what I could and purchased a DM-6 mount to match the DM-4 I purchased for my Takahashi. This, to be sure, is a beautiful piece of metal . . . but although mechanically superior to the AYO II (in my view), it's also very substantially heavier. The upshot is that my TEC 140 setup is a good deal less portable than my APM 140 setup had been.
Because it's less portable, I can't take the TEC 140 to the field where I used to set up my APM. That field will be reserved for my FC-100DZ and EVScope from now on. On some level it feels like a minor loss - I had some wonderful times there with my APM - but I'm quite sure the FC-100 can pick up the slack. And I do now have the alcove, near the church by my home, that affords some fine views of the southern sky.
The TEC-140 is also so heavy that I refuse to take it out unless seeing is above average. This morning, for the first time in a while, it was forecast to be. So there I was, huffing and puffing on the sidewalk at 4:00 AM, bound for the alcove and for a date with Jupiter and Saturn. Both planets have passed behind the Sun and are again high enough above the horizon to be worth a look.
It was an exhausting walk, but setup was easy and quick as usual. When I turned to Jupiter, two things struck me. First, seeing was not nearly as good as advertised; that close to the southeastern horizon, it was average at best. Second, the color correction of the telescope was absolutely spot on. The older TEC 140 ED is supposed to be slightly better in longer (red) wavelengths than the newer TEC 140 FL, but slightly worse on shorter (blue) wavelengths, which should make the ED somewhat better for observing Mars and Jupiter, but somewhat worse for astrophotography. In any case, Jupiter's coloration was lovely, even if the planet's fine detail was often obscured by the turbulent atmosphere.
Saturn, fortunately, was higher in the morning sky. Turning to the planet at 98x, with a 10mm Delos eyepiece installed, made for a genuine "wow" moment. Never have I seen more than a few of Saturn's moons, but now Enceladus, Dione, Titan, Tethys, and Rhea were all clearly visible. Subtle gray shading was easy to see on the planet's disk, as was a shadow just behind the rings (I love their orientation right now). The Cassini Division was plainly obvious but now around the entire ring system; unfortunately, seeing was just not good enough to see more. Once again, the color correction was sublime.
After turning to some stars and observing them in and out of focus, it was clear to me that the telescope has - surprise, surprise - exceptional, beautifully corrected optics. Yet it struck me, as it did several months ago with the FC-100DZ, how much more seeing matters than optics when it comes to planetary observation. Did I see more detail this morning on Jupiter and Saturn with the TEC 140 than I would have with the APM 140? Maybe, just a little. But have I seen more detail with the APM 140 when the atmosphere cooperated? Absolutely. I'm looking forward to experiencing what the TEC 140 can do when the atmosphere truly is steady.
I suspect I will miss the portability of the APM 140, and wow that is a good telescope when you consider its cost relative to the TEC 140. Yet for me, it is important to know that the quality of my optics are not keeping me from seeing more planetary or lunar detail. With that in mind, I am very happy with my beautiful TEC. A distant goal, accomplished surprisingly soon!
You have to strike while the iron is hot here in DC, so when the sky was clear again last night, with seeing and transparency both forecast to be average, I shrugged off my late night fatigue and trudged outside, Takahashi in hand. I didn't have it in me to walk all the way to the park, so I walked over to the (much closer) church.
Unfortunately the bushes that once shielded me have been trimmed, so it's now impossible to avoid the white glare of nearby streetlights. That stops my eyes from fully adjusting to the dark - which means that, when I'm at the church, deep space objects (other than double stars) are out of reach. Luckily the waxing Moon was high in the sky.
Once glance at the Moon - and the Capitol Dome shimmering downhill - confirmed that seeing would be quite good tonight. I used my Berlebach Report tripod, which can just handle the FC-100DZ on either my AYO II mount, or the DiscMounts DM-4 that I recently acquired. The bigger Uni tripod is definitely much sturdier - I used it last time in better seeing - but heavy enough that I didn't want to bring it out tonight.
Once again, my first glimpse of the Moon was a little disappointing tonight. Yet after a few minutes, the telescope and my eyepieces cooled down, and everything snapped into focus. If you ask me, the Moon is at its best when (roughly) half illuminated, especially the northern hemisphere. As I've written here before, I get a real kick out of following how the appearance of the crater Plato changes with the coming and going of lunar day; those changes became a fixation for nineteenth-century Selenographers hoping to detect evidence for volcanism - or perhaps life - on the Moon. Tonight I thought I could just about make out a few craterlets in Plato: a classic test for good seeing (and good optics).
Further south, the huge crater Copernicus is also a pleasure when the terminator is nearby. As Air Force and Army lunar mapping projects competed with one another in 1959, Patricia Marie Mitchell Bridges labored in secret to sketch the crater - and create the finest representation of a lunar environment produced to that point. Thereafter, Air Force maps would pave the way for NASA's expeditions to the Moon. If you ask me, the human history of this corner of the Moon is among the strangest - and richest.
For me, the view tonight was not quite as crisp and clear as it was on the 20th. Still, the Takahashi acquitted itself well, despite the relatively wobbly mount. After about 40 minutes I hit the wall and packed up, exhausted but satisfied.
It seems that the cloudy, turbulent days of winter - in more ways than one - are finally coming to an end. In the wee hours of March 20th, the sky was clear, transparency was (supposed to be) high, and seeing was about average. Conditions, in other words, were about as good as we've had in months.
I trotted out with my EVScope, intent on imaging some of the deep space wonders that are now prominent in the early modern sky. After a lightning-quick setup, as usual, I directed my attention to M51, the Whirlpool Galaxy, which is colliding with (and ripping apart) NGC 5195, a smaller galaxy. After a seven-minute exposure, the results impressed me - and for once I noticed that the image looked better when I peered through the eyepiece.
Two other galaxies beckoned around the same constellation (Ursa Major, or the Big Dipper): Bode's Galaxy (M81) and the Pinwheel Galaxy (M101). Both are much trickier targets. Bode's bright core is easy to find, but its spiral arms are easily lost; the Pinwheel is big, but has generally low surface brightness. While transparency was supposed to be high, the sky was actually remarkably bright, and I noticed clear halos around street lamps. If anything conditions promised to be poor for both galaxies, and sure enough I wasn't pleased with the results. Here's a three-minute exposure of the Pinwheel Galaxy; you'll see it doesn't exactly impress.
That's the thing with the EVScope, and something I haven't seen mentioned in any review: like all telescopes, it performs much better under a dark sky. While there's a lot of hype about how it will reveal deep space objects in the middle of the city, that promise holds up much better for objects that are already bright. Fainter objects can be lost in the glare of light pollution, just as they are in traditional optical telescopes. I'll try these galaxies again when conditions are better, but I don't expect radically different results.
By the evening of the 20th conditions had improved dramatically. Both seeing and transparency were now good: a confluence we haven't had here in DC since November, maybe October. Although I was exhausted from waking up early on the previous night, I had to walk out with my Takahashi to catch the Moon while it was still quite high in the sky.
As I've written, I've been a little disappointed since swapping my FC-100DC for the DZ, which is supposed to offer slightly better color correction. While I had only used it in nights of bad seeing, I was beginning to worry that it might have been knocked out of collimation in transport. After I set up on the night of the 20th and glanced at the Moon, those worries only grew: the image looks distressingly soft, and I started thinking about how to contact Takahashi.
Yet after a few minutes the telescope cooled down, and then: wow. Suddenly the Moon snapped into crystal clear, razor-sharp focus, with absolutely zero false color anywhere - including along the lunar limb, where the slightest undulations and shadows were totally crisp. No matter which eyepiece I used, the detail was spectacular. What stood out the most? Probably the rilles; they seemed to be everywhere, and so delicate that they looked like veins on a living thing.
After a little while I concluded that the view seemed best with my 6mm Delos at 133x. At that magnification I could still see the entire Moon, but I was close enough to make out truly breathtaking detail, in every conceivable shape and form. It truly felt as though I was looking out the window of a spaceship, approaching the Moon after a long journey from Earth.
There are times when the atmosphere cooperates, and something spectacular is in the night sky, that it doesn't take long for me to have my fill; to feel as though I can't take in any more, because I just want to savor and remember what I've seen. So it was this night. After about 40 minutes, I packed up and walked home.
So yes, the FC-100DZ is an extraordinary telescope. To me, it has a bit less false color than the DC and significantly less than the TV-85, although both of those telescopes really had very little, and that gives it a small edge in sharpness. The difference is subtle but noticeable - on nights of good seeing. Of course, those night don't come along very often, and I've found that on most clear nights the state of the atmosphere matters far more than slight improvements in instrumentation. The FC-100DZ's bigger improvement over the DC, as I've written, is probably its modest but meaningful mechanical upgrades.
Still, owing fine refractors has made me a little obsessive about the details, and for me the move from a DC to a DZ appears to have been worth it. That's a relief!
I've written it before, but wow: Washington, DC is such a feast or famine city for amateur astronomy. We've had bad seeing on just about every clear night (and there haven't been many) for around five months now. At last, this month, the clouds parted - but on night after night, the seeing remained poor at best. I took out the Takahashi FC-100DZ twice, and both times found the seeing well below average. Both times the Moon failed to impress as it otherwise might, and stars shimmered and danced in the eyepiece. Mars had long since set; I won't have another good look at the planet until 2022.
At last, at 4:30 AM on Wednesday morning I stepped out with my EVScope and found the seeing to be . . . okay? It was windy near the ground, to my great frustration, but the stars scarcely twinkled and the internet confirmed it: seeing, it seemed, was about average. Of course that doesn't matter as much as transparency when you want to observe most deep space objects, but transparency was average, too. The sky, in other words, was about as good as it's gotten since autumn.
It was a little cold, however, and muddy where I set up in the park. I hoped to test the EVscope on the Ring Nebula and the Hercules cluster: two objects I admired last year with my refractors. The scope aligned itself within seconds - why can't other mounts do this? - and I soon found it to be in perfect collimation. Moments later, it had found the Ring Nebula and I began a short exposure.
As I wrote last year, under urban skies the Ring Nebula looks like a ghostly grey ring with a fine four-inch refractor - a ring you can just, just make out with direct vision. Using the APM 140 with averted vision, the ring was plainly obvious. In darker skies, with a four-inch Takahashi, the ring was equally obvious and appeared a little flattened. Every time I looked, there was a visceral thrill to seeing it, with just a couple lenses between my eye and the nebula. Yet through the eyepiece, the object itself was a subtle pleasure.
The experience couldn't be more different with the EVScope. That thrill of seeing something with your own eyes is just about gone. Unlike others, I really don't like looking through the scope's eyepiece; it's like looking down a barrel, for one, and at the bottom of that barrel it's clear that you're seeing a screen. Maybe I've been spoiled by fine refractors and fine eyepieces, but it's a letdown.
So I look at my phone, and for the most part I wait. The experience of observing - of learning how to see - is completely lost with the EVScope. Yet the thrill of seeing deep space objects otherwise barely visible from the city beginning to resemble their true selves is simply something you can't get with a traditional telescope under an urban sky. This time I really was floored when the nebula almost immediately turned green on my screen, and then when its perimeter began to seem orange, and then when its interior started to take on a greenish hue. The breeze pushed on the tube just enough to blur some of the stars, but what a wonder.
Observing the Hercules cluster was a slightly different story. The cluster is always a highlight for me, not least because it's three times older than Earth - or because we beamed a message there from Arecibo, in 1974. With one of my refractors, it looks like a smudge at first from downtown DC, but after a while the stars come out, like diamond dust on a velvet background. It's subtle - exceptionally so with one of my smaller scopes - but magical nonetheless.
Again, the experience couldn't be more different with the EVScope. Hundreds of stars are easily visible, but of course they're slightly bloated; they lack that crushed gemstone beauty that you get with a fine refractor. Many of the stars are also clearly red, a testament to their age: again, things are visible through the EVScope that just aren't accessible with a regular telescope. Is the view more impressive? Maybe not to an experienced observer, but it's different, and that's a good thing.
Some complain that the EVScope delivers the same experience you might get with a much cheaper (and more unwieldy) astrophotography setup. That's just not true. The EVScope is marvelously portable, and I can set it up in about one minute. It needs virtually no time to cool down. It's a joy to use and on most nights there's no fuss at all. In half an hour I can pack up - this takes another minute - having observed at least three deep space wonders as I otherwise never could. The key point is that the EVScope delivers a fundamentally different experience than you'd get with either a traditional telescope or an astrophotography setup - and again, I view that as a very good thing.
It has, to put it mildly, been an eventful ten weeks since I last wrote in this journal. We endured a sustained effort to subvert democracy and a frightening insurrection in the midst of what - we hope - was the worst stretch of a once-in-a-century pandemic . . . and then, at long last, we exhaled with the return of decency and competency to the White House. There were nights I was too consumed by the news to take out a telescope, believe it or not.
But the bigger reason for the lack of updates here has been the atmosphere. For months it has been every bit as turbulent as the politics in this city; in fact, I don't think we've had a night of good seeing since early November. I took out my Takahashi FC-100DZ a couple times, if only to catch a glimpse of Mars before it grew too small for detailed observation. While I caught a glimpse of those dark albedo features and even the southern ice cap, the planet is now too small for the kind of views that dazzled me last summer and fall - and the seeing never really brought it all into focus.
On the night of January 12th, with our observation deck deserted, I did manage to haul the Takahashi and my TV 85 to the rooftop. Since I swapped my FC-100DC for the DZ primarily to obtain the best-possible views of Mars, I thought I'd compare the view through the Takahashi with what I could get using the TV 85. As I've written in these pages, the TV 85 offers gloriously high-contrast views, but its color correction is supposed to lag behind that of the Takahashi refractors, especially the DZ.
So, was the view very different? Well, the seeing was awful, so that hampered the comparison . . . and my red dot finders abruptly stopped working, which made it much harder to quickly compare the views. Then I discovered, to my surprise, that my AYO II mount has developed a little slippage, especially when holding two telescopes. Is it time to look for a new medium mount?
In any case, I did eventually get a chance to observe Mars through both telescopes. I thought that perhaps I could make out a little more detail with the DZ, but the seeing was so bad and the usable magnification so low that I couldn't be sure. I was, however, struck by the difference in color. Mars was much redder through the TV 85, and the planet's colors looked more accurate, more natural using the DZ. To me, at least, that's roughly synonymous with "better." The difference was big enough that I can't really imagine using the TV 85 over the DZ for planetary observation, even in bad seeing and cold weather.
In any case, I have some tinkering to do before using either telescope again; new finders and perhaps a new mount may be in order.