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Where premium quality meets exceptional value. ZEISS Conquest HDX.

New ATC/ STC 17-40x56 Telescope (4 Viewers)

I finally decided and gotten the STC after waiting for more than 3 months with the local distributor sold out immediately when it first arrived. Had it like 2-3 weeks now and have been trying to get used to this new tool so I thought to share my experience using it.

First of first, justifying the cost is never easy, hence the decision is always about opportunity cost. And the next hardest thing is the ATC vs STC decision. I have a gap when my 12x bino and my 600mm couldn’t allow me to see the details of the birds in the dense forest in tropical areas where I lived and mostly frequent. With age catching up and failing eye sight, I start to appreciate details and colours hence ultimately decided to go for it.

I choose STC because i use it mainly handheld, dashed into the forest and observe the tiny subjects hiding among the leaves and branches. Through experience, most birds never really stay for long when they sense that someone is starring at them hence I don’t want to waste time finding them again from a bino to an angled scope. I have been using the STC this way for the past few weeks and I’m liking the fact that it gave me exactly what I want to use it for.

However, allow me to share some of the experience/features I encountered which might be a turn-off for someone who are deciding between the 2:

- it looks like a spyglass!
That is what my son and the sales lady commented when they saw me using 1. You practically look like a peeping Tom with a tube. If you point towards a residential area, be warned!

- handling is tricky
The straight barrel makes it hard to rotate both focusing and magnifying wheel at the same time. The magnifying wheel behind is tighter and depends on how you grip it, the other hand will rotate the focusing wheel accidentally if you did not move it away. And the worst thing is, your fingers are usually resting on the wheels so you really need to grab other parts in order to prevent this from happening.

- stable handing
holding a ATC and adjusting the wheels are so much better not to mention its way more stable since your hands are closer to each other like cradling a baby. For STC you are spreading both hands out in a straight line. Yes I’ve tried them both for hours so this is the experience I encountered. If I don’t have an intended use for it and just use it generally as a scope, ATC will be my choice especially when there is an orange version.

- 17x can be handheld
I have shaky hands but it’s decent. Going pass that is really challenging on the STC. I frequently want to use a self standing monopod or a lightweight tripod with an extension. Yes I bought a travel tripod initially thinking that it will be tall enough for use but it only work for ATC. STS require a much higher tripod/monopod. This is a must if u are glassing for long or trying to find details.

- The eye piece is bright
I’m trying to find an winged eye cup like my bins but Swarovski did not made 1 yet. This helps to improve stray lights from distracting you at the side. I enjoyed focused viewing hence I always used one. If someone had found a 3rd party selling a winged eyecup for STC/ATC please share the source.

Though I don’t find much difference in daylight between my bino at 42 vs STS 56, the phenomenon I had is that in low light condition, the STC actually appear darker compared to my bino. I’m not sure is it because its 2 eye viewing vs 1 eye or due to lens coating (I read somewhere STC/ATC has the same coating as NL pure) but this has been my experience.

Just to be clear when I say low light I don’t mean evening or night but in the day within a dense forest where lights are scarce or under shade.

Overall besides all these awkward experience, it works exactly what I want it to be - clarity, well made, durable, reliable and hand holdable.

Lastly, with this new additional tool, one would have to figure out how to carry all 3 (scope, bins and camera) without having straps criss crossing on each other over your shoulders :)

Enjoy it for those who had bought it!
 
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Though I don’t find much difference in daylight between my bino at 42 vs STS 56, the phenomenon I had is that in low light condition, the STC actually appear darker compared to my bino. I’m not sure is it because its 2 eye viewing vs 1 eye or due to lens coating (I read somewhere STC/ATC has the same coating as NL pure) but this has been my experience.
Probably because the exit pupil of your 42 is larger?
 
just did a check, 12x42 NL pure exit pupil is at 3.5mm, STC at 17x is 3.4mm and 40x is 1.4mm....I might be at a higher magnification without knowing it since I'm doing a random test swapping between the two. I may have put on a higher magnification without knowing it. Let me do a confirmation over the weekend. Thanks for the reminder Reinier!
 
I did not know you were talking about a 12x42. Is assumed it was a 10x42 or 8x42. The difference is not so big then.
Nl pure has 91% transparency. The STC has 88%. That plays a role as well I think.

I am enyoing my ATC too. I use it more handheld than with a tripod, because I don't like carrying tripods. 😉
 
Yes for sure, ATC just feel so much more like a tripod/monopod free scope :) if I'm using it more like a scope and not to use it interchangeably with a bino, I will go for ATC as well.

Did anyone who owns them use a phone adaptor for digiscoping? I'm trying to see if the magnetic ones works better than the clamped on type which I own 1 as well.
 
Now that I’ve had a chance to compare the ATC to my Opticron MM4 60, I have to agree with all the comments about the lack of anti-rotation pin. No matter how tight I thought I’d got it, it came loose really easily. I could’ve used some thread lock paste I guess, but at the asking price, I shouldn’t have to use hacks. For me, it’s too expensive to be worrying about dropping it.

A real shame, it’s such a great compact scope otherwise. Brighter and better colour than the Opticron, albeit only by a little.

To reply to Malsam about digiscoping - I can confirm that the ATX attachment for Phoneskope works - haven’t tried the magnetic ones. You just need to screw the eyecup all the way up otherwise there isn’t enough for the adapter to hold on to. With an iPhone 13 at 3x there was no vignetting.
 
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Now that I’ve had a chance to compare the ATC to my Opticron MM4 60, I have to agree with all the comments about the lack of anti-rotation pin. No matter how tight I thought I’d got it, it came loose really easily. I could’ve used some thread lock paste I guess, but at the asking price, I shouldn’t have to use hacks. For me, it’s too expensive to be worrying about dropping it.
Hm. I used over the years several scopes with smallish tipod feet (e.g. Kowa TS-1, Carl Zeiss Jens Asiola 63/430). These scopes also didn't have any anti-rotation pin, these arrived years later on the market. No problems at all. I not really clear what the probvlem is with the ATC.

I wonder if someone can perhaps post a couple of shots showing the tripod foot of the ATC in close-up, one photo showing the tripod bush and another one showing the foot from the side. I still haven't had the chance to look at an ATC closely.

Hermann
 
Same here - i don’t remember my old TSN-1 having as small a foot as this though. I don’t know if the circular (rather than rectangular) shape doesn’t help. There’s just not a lot for it to grip to.

I’m having another go with a different quick release plate - one with more gripping pads, and will see if that helps. It’s such a great scope, and just what I was looking for. Now having slept on it I want to see if I can get this to work
 

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Same here - i don’t remember my old TSN-1 having as small a foot as this though. I don’t know if the circular (rather than rectangular) shape doesn’t help. There’s just not a lot for it to grip to.

I’m having another go with a different quick release plate - one with more gripping pads, and will see if that helps. It’s such a great scope, and just what I was looking for. Now having slept on it I want to see if I can get this to work
Start off by junking that 3/8"x16 to 1/4"x20 adapter and use a QR plate with 3/8" screw. This won't necessarily solve your problem but might improve your chances. See Don't use thread adapters!

John
 
Same here - i don’t remember my old TSN-1 having as small a foot as this though. I don’t know if the circular (rather than rectangular) shape doesn’t help. There’s just not a lot for it to grip to.
I doubt the shape makes a difference. My Kowa TS-1 (a far older scope than your old TSN-1 ... 🙃) and my Zeiss Asiola (Carl Zeiss Jena "Asiola" Spektiv / Spotting Scope) also had round feet, and the Asiola's foot was maybe even a bit smaller in diameter.
I’m having another go with a different quick release plate - one with more gripping pads, and will see if that helps. It’s such a great scope, and just what I was looking for. Now having slept on it I want to see if I can get this to work
Careful there. I find metal on metal works best on smallish feet, far better than any "gripping pads", no matter what material they are. With the Asiola I used an old Gitzo QR system, and after some initial problems with the scope coming loose I scraped off the cork on the QR plate. Made quite a difference, even though the cork Gitzo used on their plates was of very high quality. I always carried the Asiola mounted on the tripod and didn't have any problems, even though the Asiola was longer and heavier than the ATC.

I also switched out the 1/4'' screw against a 3/16'' screw, just like John suggested. With the adapter you use two things can unscrew: The adapter itself in the bush of the scope, and the 1/4'' screw in the adapter. Make sure you get a 3/16'' screw of decent quality!

Hermann
 
Start off by junking that 3/8"x16 to 1/4"x20 adapter and use a QR plate with 3/8" screw. This won't necessarily solve your problem but might improve your chances. See Don't use thread adapters!

John
The tripod foot on the atc doesn't look great but it's good it's at least got the bigger thread size as an option. With a decent size flathead screwdriver and the larger thread you should get a half decent grip. I still think the atc and stc are mainly designed for monopod use - or at least the foot is!

Will
 
I've done a few group excursions with it and a LOT of people from the birding group now want to buy it too. Even a guy with a Swarovski ATX 85 was interested in the ATC because he just doesn't bring his heavy ATX along enough anymore. I was surprised that the more senior birders of the group were so positive as they are usually pretty big on "size of objective" is everything. I guess everyone kind of dreads bringing the heavy scope + tripod along. Especially on walks.

A quick update: super happy with the image quality. I love the 17mm focal distance as it gives you a great, wide field of view and the image is very bright. I have the Gitzo Traveler tripod and at 40mm I do get a bit of vibrations unless there is absolutely no wind. It kinda feels like I can't get the image to focus but it's just because of the vibrations. No big deal, I wouldn't get a heavier tripod because of this. I mostly use the 40mm zoom only very occasionally. I am assuming the Gitzo 2 series would have better results at those focal lengths while still being reasonably light. The 1 series is ideal for my use-case, though. I might get the Gitzo hook to weigh the tripod down with my backpack to help with this.

The eye cup is super comfortable too. I compared yesterday with a bigger Vortex and the ATC looked brighter, was more comfortable, and of course much smaller and lighter. I much prefer the in-body zoom and focus also. Works nicely with gloves too.

The missing safety pin isuse is indeed annoying. In the beginning I was a bit frantic about it. However, I learned to relax about it. It has never come loose yet. The scope is VERY tight on the QR plate by Gitzo right now. So much so, I am afraid I will not get it of very easily anymore. In any case, not a deal breaker. Just be a bit careful. Still, would've been much nicer if Swarovski included some sort of safety there. Not sure why they didn't?

Hope this helps. I'm pretty sure this thing will SELL for Swarovski in the future. Everyone I meet is super impressed. There's a lot of people who haven't bought a scope yet just because it's too heavy. When I tell them about the price, they're a bit less ecstatic.
 
I've done a few group excursions with it and a LOT of people from the birding group now want to buy it too. Even a guy with a Swarovski ATX 85 was interested in the ATC because he just doesn't bring his heavy ATX along enough anymore. I was surprised that the more senior birders of the group were so positive as they are usually pretty big on "size of objective" is everything. I guess everyone kind of dreads bringing the heavy scope + tripod along. Especially on walks.

A quick update: super happy with the image quality. I love the 17mm focal distance as it gives you a great, wide field of view and the image is very bright. I have the Gitzo Traveler tripod and at 40mm I do get a bit of vibrations unless there is absolutely no wind. It kinda feels like I can't get the image to focus but it's just because of the vibrations. No big deal, I wouldn't get a heavier tripod because of this. I mostly use the 40mm zoom only very occasionally. I am assuming the Gitzo 2 series would have better results at those focal lengths while still being reasonably light. The 1 series is ideal for my use-case, though. I might get the Gitzo hook to weigh the tripod down with my backpack to help with this.

The eye cup is super comfortable too. I compared yesterday with a bigger Vortex and the ATC looked brighter, was more comfortable, and of course much smaller and lighter. I much prefer the in-body zoom and focus also. Works nicely with gloves too.

The missing safety pin isuse is indeed annoying. In the beginning I was a bit frantic about it. However, I learned to relax about it. It has never come loose yet. The scope is VERY tight on the QR plate by Gitzo right now. So much so, I am afraid I will not get it of very easily anymore. In any case, not a deal breaker. Just be a bit careful. Still, would've been much nicer if Swarovski included some sort of safety there. Not sure why they didn't?

Hope this helps. I'm pretty sure this thing will SELL for Swarovski in the future. Everyone I meet is super impressed. There's a lot of people who haven't bought a scope yet just because it's too heavy. When I tell them about the price, they're a bit less ecstatic.

Thank you very much for that report. The optical quality is there, which reassures me because the price is high.
I ordered an ATC 17-40 x56 telescope, I hope to receive it soon. I think it’s six months now.

On the tripod, the Gitzo 1545 is often cited as an excellent model. I’m surprised that there are still vibrations at 40x. The 2545T is a bit heavier.

I also wanted to ask the owners of this ATC (and all the others!), do you protect the telescope with a case? Is this essential for a general telescope? Swarovski does not offer a case for ATC.
There is this model (lenscoat), I do not know if it is right. No one talks about it in this post. There are comments about microfiber bags. The best solution? (and the lightest?)
 
Thank you very much for that report. The optical quality is there, which reassures me because the price is high.
I ordered an ATC 17-40 x56 telescope, I hope to receive it soon. I think it’s six months now.

On the tripod, the Gitzo 1545 is often cited as an excellent model. I’m surprised that there are still vibrations at 40x. The 2545T is a bit heavier.

I also wanted to ask the owners of this ATC (and all the others!), do you protect the telescope with a case? Is this essential for a general telescope? Swarovski does not offer a case for ATC.
There is this model (lenscoat), I do not know if it is right. No one talks about it in this post. There are comments about microfiber bags. The best solution? (and the lightest?)
I have a spotting scope soft case from Marsupialgear.com, a USA company making a wide variety of optics cases for rugged outdoor use. I see they now have a "mini" scope case for either ATC or STC. For me it an excellent product, well made and protective.
 
[...]
On the tripod, the Gitzo 1545 is often cited as an excellent model. I’m surprised that there are still vibrations at 40x. [...]
You should not be surprised. You will have vibrations with almost any tripod/head/scope combination. The question is only, how much. That depends on your setup and the evironment (wind, self induced).
 
You should not be surprised. You will have vibrations with almost any tripod/head/scope combination. The question is only, how much. That depends on your setup and the evironment (wind, self induced).
Many tripods have a hook designed to hang a bag from down the middle. The extra weight may help
 
Many tripods have a hook designed to hang a bag from down the middle. The extra weight may help
Yes, but this does negate the concept of a lightweight / compact scope system. The bag would have to be in excess of one kilo to make any difference regarding stability.
 
Yes, but this does negate the concept of a lightweight / compact scope system. The bag would have to be in excess of one kilo to make any difference regarding stability.
Agree. I would never consider a weighted bag just for hanging on tripod. But since the whole purpose of a compact field scope (I use the Kowa 553) is portability, it's works well for me travelling or hiking, both of which mean I'll have at minimum a small day pack in which to carry the scope, water bottle, binos, etc. So when setting up scope, that bag works well hanging from tripod hook (very lightweight Oben in my case).
 

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