$300 for a Telescope: Refractor or Reflector?
ฝัง
- เผยแพร่เมื่อ 8 ธ.ค. 2021
- Can’t decide on your first telescope for astrophotography? In this video, I give you all the information you need to make an informed decision, as well as look at some results from a shootout between a budget achromatic refractor and a budget imaging newtonian.
🔭 Telescope Purchase Links
Svbony SV48:
US:www.ebay.com/itm/193701263282
US (Astrogear.net): tinyurl.com/ag-svbony90
UK:www.ebay.co.uk/itm/284334028570
DE:www.ebay.de/itm/283604630417
Apertura 6” F/5 Newtonian + Coma Corrector:
Newt: tinyurl.com/6f5n-nebula
Coma Corrector: tinyurl.com/coma-nebula
Apertura 60EDR Kit: tinyurl.com/60kit-nebula
Astrosystems collimation tools (I use the barlowed laser): www.astrosystems.biz/coltlsm1...
🌌 Images compared in this video:
drive.google.com/drive/folder...
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I am a member of the High Point Scientific, Astrobin, OPT, AgenaAstro, eBay, and Amazon affiliate programs. Product links in my video descriptions are typically affiliate links, which means, at no extra cost to you, I will make a commission if you click them and purchase something. I also have working relationships with the following companies/brands to receive products to test: High Point Scientific, QHYCCD, Venus Optics, Astrogear.net, Night Sky Camera, Hunt's Photo & Video. I do not review products for money and any brand deals will be fully disclosed. If you have any questions about any of this, please get in touch.
Before the video starts let me say: Thank you. This is exactly what I wanted to know and finally can make a decision about what to buy to have my kids enjoy our clear skies. Now, let me go back to the video. 👍👍👍
The title is a little misleading. It sounds general, but he is focusing on astrophotography
@@bowrudder899 Because it's an astrophotography channel
Nico's videos are great. However these are scopes for astrophotography, not general observing. Those are very different things. Plus this price is only for the tube (OTA) and as Nico points out, the mount will be a lot more than the OTA. I hope by now you have watched the video and figured that out.
For a beginner and introducing kids to the hobby, I would get a table top dobsonian like the AWB one-sky.
💤💤
Nico is the best! 100% approval, all information you need, step by step and a lot of passion for astrophotography 🌟
Great video Nico. There are so many small details and hints that are so helpful to those of us beginning in AP. Bravo!
I live in the north of England and get perhaps 10 days of adequate seeing in a year. (Yes really.)
I've got no cash; the best thing I ever did was not buy a telescope! I spent years making mirrors up to 18" and objectives up to 6", but gradually realised that astronomy, for me, was going to be something best carried out vicariously.
I really do get more pleasure from watching videos of other people pursuing my beloved hobby than from trying to do it myself. When the light-pollution's bad, the rain's pouring, the north wind's howling straight down from the Arctic, and the sky is grey, grey, grey, it's wonderful to be able to snuggle up with a mug of cocoa and a Channel like this and tell Mother Nature to go away - I'm busy! 😁
I'm in Glasgow and I feel your pain ...all the best for the year ahead Elli
That sounds very sad! I have camped in the Australian outback where you can almost reach up and grab the stars.
@@frankieg7575 I am lucky one, South of England has a few more days for clear nights.
Same here in dirty, dark ol Dublin.
However, I was lucky to spend 5 years working in Phoenix back in 1995 - 2000. I was able to lay in bed at night and gaze out at the Hale - bopp comet. Back in " rip - off Ireland " again 😕 )
This answers all of my questions, and a whole bunch that I hadn’t realised I should be asking. Thanks Nico !
Thank you so much for providing all the detail information and purchasing factors and considerations. This is exactly the type of video I need to learn and figure out what I really want without a bunch of trial and error. You answered so many of my questions and I now have a much better idea of what I want.
I want to thank you for this video! I have been toying around with getting into this hobby for a few months now and the information you’ve shared here has helped me more than any video I’ve watched so far! It assures me that I can get decent results on a budget. I’m pretty sure I’m gonna catch a bug and start to spend more and more and more but this video has been super helpful and helping me step into this hobby on a budget!
Thank you for your time and counsels.Very good video as always.I just received my Svbony 503 80ED F7,happy to hear it being cited in the video.
Outstanding vid again, Nico. Thank you! You changed my mind on my first telescope just before I was about to buy it! Great timing! (Going for the Newtonian…)
Thanks. I always find your videos to be highly informative. Happy holidays. Clear skies! Nar
This is a great video! Shows a lot of great potential at a true entry level and your results were pretty impressive! I'm going to play a bit with a Vixen R130sf reflector I snagged at an estate sale soon.
I completely agree that there is a quality gain to be had with a large aperture reflector, but at what cost? Not only in terms of financial cost, but also size, weight, complexity, time and effort. After many years of experimenting and $$ spent, I finally settled in at the convenience of a modest 4" refractor OTA. That hit the right spot for me to lower the mount and tripod requirements and wind issues compared to larger aperture sizes. Ultimately the BEST telescope for me is the one I want to use most often. A simpler, lightweight setup that does not require work to start using means I use it more. Find what works for you. Enjoy the journey. Cheers.
Awesome! Thank you for all you do. You have amazing videos with a lot of information that helps me.
Great video! I have both and I like each (Newt vs Refractor) for their own versatility.
I'd like to add some info, just coming from my own experience. Astrophotography is not easy, there is a learning curve. Even with the best equipment out there, it can be tough. I recommend any newbies to this hobby to get at least 1 year of warranty or longer to their equipment when they purchase, don't be like me, stuck with an expensive gear with a defect and no way to return it. Please read on..
Here comes my complaint. Astrophotography is tough on its own, It's even a lot tougher and even become a hobby killer, if the equipment has faults, like manufacturing defects and just equipment that should have not made it through quality control.
I have started with with a telescope of a brand name, that I was recommended by many (not mentioned in your video) , and I just couldn't produce good images, no matter what. Being a newbie, of course I'm looking myself and what I do and try to find the what I'm doing wrong, but with plenty of info on the web and asking others with the same hobby, it turned out that the telescope had pinched optics and even the flattener produces tilt in the images, when many people would be mad enough to throw the scope in the attic and say what a waste of money!
Of course, you won't discover this 4-5 months after owning the scope and there is no way to return it! And it's even worse, when you reach out to the manufacturer and get no answer or just tells to "buy another telescope". (And I did, but not from the same brand).
So I also urge people if they can't figure out why their images not turning out good as they should be, ASK. Go on Cloudy Nights forums, sign up to Facebook groups and so on.
So just my 2 cents and just my intention to warn anyone entering this hobby, please make sure you get yourself a longer period to return the product or even up to 1 year or more warranty, you do not want to stuck with a telescope that costs $600, and unable to figure out if it's lack of experience or actually the equipment is bad! It can be just a very very expensive paper weight and hobby killing experience!
Noted
Same here. Thanks.
Let me guess, it has 127eq in the name of the scope. Never, ever buy a bird-jones telescope design.
Not half as much as your scope but I just recieved a helical that is completely broken but the manufacturer is insisting it wouldn’t have passed quality inspection if it wasn’t functional. It makes you feel useless as a newbie as these brands talk to us like we are children. They said they have sent a replacement after I sent them a million videos of me showing them that it does not work. That was weeks ago. Still not received the replacement. This is probably one of the biggest brands in AP too 😢
you should definitely say the brand! like you scream it out loud!!! it was your money and they dont respect you as a valued customer!
Thank you for the video! Extremely informative and well put together. Answered a lot of questions I didn't know I had. Once I take the time to become more familiar with the night sky, I'll be much better prepared to make the most out of the equipment I've collected.
I binge on your content more than any Netflix series Nico 👍👍👍😂
Simply EXCELLENT video. I wasn't *this* interested in the topic, but you not only caught me. Your presentation made med watch the whole video, and I am seriously contemplating getting into astrophotography now.
Superb! .....Thanks so much for taking the time to make this video.
Superb presentation. Easy to watch, follow, and learn very practical information that I find interesting and very helpful. You are a great teacher.
Another great tutorial and source of advice .. thanks Nico
Super helpful intro to OTA’s, Nico! Thank you.
Great video your clear and precise in your explanations of the scope 👌
bro thank you so much this is helping me so much i am now loving you channel thank you so much for helping me out as a beginner astrophotographer
Thank you for this video. I been doing some TH-cam research to get started and this one answered to so many questions.
This was very well explained. I could listen to you talk about these subjects for days. I was looking to get a newt for visual purposes and dabble in dlsr astrophotography on a solid
mount. Those pics got me hyped! Thx for all the content you provide.
Super usefully video’s. I learn a lot every single time.
Just have to say, I like the optics of reflector telescopes over refactors, however, dealing with the balance problems is a bear if one is using a Nikon or Canon camera. Mounts are important but being able to put the camera on the back end is a big help in setting up and viewing. This was an A+ video. Thank you.
Congrats on 100k!
As a new hobby for me you always do a great job explaining everything. Thank you!
@nebula photos Thanks for being a inspiration to me and my son(12yo), My son just bought a Celestron 130EQ Skymaster used for $200. We gonna pick it up tomorrow. The last 3 hours he´s been looking trough a lot of your videos 🙂, as he just told me " Dad, I need to be prepared". 😀❤
Thanks!
This really helped me to choose which one I want! Especially the picture quality.
Hey, I just bought a used version of that reflector.
I am so happy to hear the correct pronunciation of "SVBONY".
Thank you. Very well explained. I learned a lot from you.
Another awesome video, Nico!
Crystal clear info, I’m an expert having watched this, thank you!
Excellent video again Nico!
Very interesting & useful - thanks for sharing!
Thanks for the clarification I feel like a proper vernacular is important for luring about a complex hobby so thank you .
You did it again!; Like Cuvi, you are delivering Quality Content. Thank you!
Hej Nico! Nice and detailed compare and a great help for every beginner. Bug thumbs up! - Now one question: if for Achromatic telescope two wave length are crisp, what if you'd use a narrow band filter, do we have then still this achromatic abberration to such extend? I mean we limit the wave length quite a lot....Thanks for quick heads up!
I always love the star spikes newtonians make from the secondary mirror bracket
Even in visual astronomy it looks really cool when looking at super bright stars or even the planets
Nice video, i started with 8inchF6 newt on HEQ5,. If mount is belt modded then it guides fine even 10inch F5 carbon newton. Problem with metal newtons is that metal expands and contracts due to temperature changes, so you go out of focus at longer exposueres.
Great video like always Nico, IMHO if i may ,about the Newtonian wind problem ,can be eliminate by buying a Truss Newt,also with the doublet refractor if you'll buy a slower f ratio let say f9 f 10 so longer focal length will resolve quite a lot of the aberration. :)
Dont forget. if you are on a budget to look out second hand gear. I got a SkyWatcher AZ-EQ6 for £1000, Celestron C8 for £250 and a Canon 550D with 892 (like new) shutter count for £144. This is well below new prices, but great for a beginner like me to potter around with.
I use a Orion XT 8 goto and a high end cell phone which produces decent images which is not bad for starting out. A refractor with a wide field would be the best in opinion for ease of use and mobility.
Excellent advice thanks
Thanks for another great video, Nico! Wish I had all this explained 2 years ago. :-) I'll put in a plug here for the Apertura 60EDR from High Point Scientific that you mentioned in the video and that you recommended I get instead of a zoom lens for my DSLR. It's a great value in a little package! I was able to photograph Comet Leonard on Dec. 7th and it did a great job. Also, it's light enough (about 3.5 lbs.) that it worked very well with my SkyGuider Pro (SGP) star tracker (max 11 lbs), along with my DSLR, Tele Vue 2x Power Mate lens adapter and T-ring, laser pointer with bracket, and a long Arca clamp/plate for declination balance. All together it was about a 7 lb load on the SGP and the Apertura 60EDR fit the setup perfectly. I really love that little refractor. Thanks again for the recommendation!
finally found the video i was searching for! after a month!
Thank you Nico, that was very informative! I already have a GSO 8" F4 newt with CC and an EQ6 mount and a dedicated astro cam. I've had mixed experience with imaging (mostly because I'm very bad at processing images) but one thing is certain...when everything is setup correctly the newt does give excellent results! Thanks for the tip about primary mirror masking I'll try that
One thing not mentioned is that the Apertura (GSO) coma corrector has a 1.1 magnification (F/5->F/5.5).
The important thing about this 10% increase in FL is that it gives you the extra back focal length to reach the camera film plane without needing a dedicated astrograph Newtonian with larger diagonal and shorter focuser.
So much good stuff in this vid 👍
I would echo your comment about a budget Newtonian being a great way to start and still have all the upgrade capability. My wife bought me a Skywatcher 200 PDS and HEQ5 Pro as a "big birthday" present. I learned how to attach my old mirrorless camera to it initially (Sony NEX5N) and started my astrophotography journey. Added a Coma corrector, then an orion autoguider and most recently a mono camera(ASI1600MM), filter wheel for narrowband and ZWO autofocuser. Software control was a big upgrade and in my case this was ASCOM, PHD2, Sharpcap (for polar alignment) and APT. Bottom line: the OTA (or scope as you call it) has kept up with my journey and the photos I can take now are ten times better than when I first started. The mount may be struggling a bit now with all the extra weight, so that is what I will probably upgrade next. Bottom line: a good budget "Newt" is more than enough for anyone's first few years in astrophotography.
Amazing video. My self I want the system portable. So I can bring it on trips. You mentioned light weight a lot as an advantage and I agree and add that mostly people in the world lives on huge cities. This light systems allow those people to bring it on trips
My current "scope" is the Canon 400mm 5.6l lens. Not expensive when bought used and a very good controlled aberrations.
😃, My first telescope in 1960 was a cardboard tube 3" reflector I don't remember the name of, but I remember they sold them in the science toy section at Savon's drug/department store. It did have a twist zoom lens and I could see Saturn when I could find it in light polluted LA county suburb of Norwalk.
By the way, its a very good lens , and thats whats yuo want, congrats
i got a 300mm. do you think that’s be enough for taking pictures of the moon and planets?
@@zade4545 Hi for planets to be big in the picture 300mm is much to short. You need over 1000mm for it. For the moon it is good though.
Thank you so much!
Great Video. THANKS!
I bought a 22" Obsession. Made in Wisconsin. Wow, the views are incredible! Still do enjoy using the small refractor though.😊
Very long but very informative intro. Thanks!
Muchas gracias por tanta información! saludos desde Argentina
reflector is quite easy to use after a while and some knowledge, I also like refractor because I live on the hill so there is a nice view during day and I can watch birds, squirles etc. in a distance and is good for traveling
my opinion: heavy reflector for night sky events around house
light refractor for everything wherver whenever
Excellent summary Nico! Plus great comparison image. I would add one additional tip for Newtonians if you are imaging with a lot of city lights around you: most Newts have big light leaks from the primary mirror - so a DIY butt cover can make a huge difference!
Also for collimation, some lasers can lead to miscollimation, if the laser itself has issues. To avoid that problem, a Barlowed laser technique works excellently (cheap laser plus cheap Barlow). My favorite though is the humble Cheshire :-)
Thanks for the tip Cuiv! I'll be trying that on my newtonian :)
yes, always cover your butt in case of leaks. :)
About DIY and budget options, you should really try making your own AstroEQ ArduinoMEGA controller and demonstrating how to hook everything up, both hardware and software wise. I recently was looking at a way to do some upgrades to my pretty simple EXOS-2 mount that had just stepper motors for RA and DEC. For ~40$ I've managed to create controller that allows my rudimentary mount to do pulse guiding, platesolving and GoTo (granted with low speeds, but that's easy to improve within small budget). Additionaly I can now remote control my entire setup from remote screen as this Arduino Mega controller is plugged directly into my laptop. A great project for another longer video I think.
To save on the flattener , and add funds to the mount, you can use software to correct the image. GIMP can do this and when you get it right, save for a one click fix. It will barrel the image and crop, so you do lose a little bit. With the achromat, the fringing can be reduced by reducing the aperture with a mask. Even a small step from F5 down to f5.6 can make a huge difference. Did this on an F5 refractor.
HI Nico, thanks for these in depth reviews and explanations! - One information that I'm missing is time of exposure... say both of these telescopes are pointed towards the same stellar object... Is one going to take more exposure time than the other to get similar exposure? I would expect that to be the case... but which one would be faster in that case? i.e. Less long exposure required?
Newtonian was faster because its F5.5, SVB is F7 so on same exposure time Newtonian gather more light
Amazing video as always! I was thinking about getting the EQM35 with a similar refractor to the one you showed. Would that be a good combo? Or would it be undermounted?
Although maybe a bit more technical, but image scale, resolution and sampling also play role in determining the image quality, or looks. Sampling in relation to the average seeing quality at the imaging location can be hugely important. This is not only determined by the OTA, but in fact by the OTA in combination with the imaging sensor/camera - more particularly the pixel size of the sensor. At 500mm with a Canon APS-C DLSR, you were probably undersampling, whereas the Newton was likely right on the money at 750mm. This makes the image with the refractor look softer compared to the result coming from the Newton. Although admittedly, the chromatic abberation in a normal achromat makes focusing much more difficult.
master class, thank you
Excelente video, muchas gracias y saludos desde Chile 🇨🇱
As always, a great, really informative video, thank you! You have here recommendations for better refractors. What would you say are higher-end quality Newts? I’ve seen people briefly recommending Orion 8” and Skywatcher Max-Newt 190s (quite heavy), and one friend of mine really likes Teleskoop Service ONTC custom models. But there seem far fewer online reviews of better-quality Newts than there are of refractors, SCTs and RASAs. You seem to prefer bigger refractors, like the Askar 130, for narrow-field DSO targets. So, I’d be interested in hearing what you think of higher-quality Newts.
Focal length is my main dividing line between Newtonian astrographs and refractors. Take for example my Orion 10" Newt/Astrograph. 1000mm focal length and 250mm aperture for $900. The closest refractor to that is Orion's EON 910mm focal length and 130mm aperture and the cost is $2,700. Sure there's more maintenance to do with a Newtonian, but I find all that stuff fun too. Not every night is clear anyways, having something to do for the hobby when it's cloudy is a plus for me. At the other end of the spectrum, there's no Newt/astrograph out there with focal lengths under 400mm. So I love my little doublet APO's and am looking forward to getting more tiny refractors. Right now I have the Sky-Watcher 50mm Evoguide w/field flattener (ok), WO Zenithstar 61 w/field flattener and reducer (Nice), and Sky-Watcher 72ed Evostar w/Field flattener and reducer(Very tasty). If someone came out with like a 400mm focal length 100mm aperture Newtonian Astrograph I would be really interested in how that'd work.
Thank you learned a lot
I have been looking into this very recently since I’ve been using a Altair ed60 with a .8 reducer almost exclusively for the past year. Basically most of the time I’ve been in the deep sky part of the hobby. I’ve been strongly considering a reflector between 600-800mm. Just to be able to get a new perspective since I’ve shot most of what I can with the Altair60 already. A reflector Astrograph is about the only cheaper way to upgrade focal lengths and keep my f4-f5 range for narrowband. Thought about the RASA for a bit, but I only see that as a good option for darker skies. At least with an f4 there is less to worry about with filters. Looking for forward to this!
I would look into the Skywatcher 200P Quattro.... 8inch f4...
@@astrolux3603 I was also looking at a maksutov Newtonian maybe. Not many options in that market anymore though. I want to use my cem26 (26lb). I was trying to compare them to newtonians. One thing I like is no star spike with those. Amongst a few other things.
Wow, lots of info. for a newbe, Thanks again. I was about to buy a barska 25lb rock with no options I could use. This is so awesome. thank you for this. I'm totally off on the barska and I feel better about spending more knowing what I'm buying
Nice upgrade for a Newtonian and SCT is a set of Bobs knobs for collimation. No screwdrivers next to your lens, no scratches. When you go out observing your never alone, Murphy is right there every time. Makes the procedure far far easier and a set is not expensive and easy to install, these things should have been a factory installed item. Good video. Newtonian on a goto is nice, I also have a 12" Orion on a rotator base. I can't see that big thing swinging around on a motorized mount. It's fun for planets, not fun for long term imaging.
I live in dusty Morocco. That mirror on the reflector would be uselessly caked with the stuff in the time it would take my dogs to run around me while setting up.
great video, as usual!
I have a question: how much sense has to buy a 400mm telescope (doublet) if I have a 400mm prime lens?
The refraction spikes improve the photo, love them.
Thank you Master!!
Very nice presentation.
Amazing video and content on the chanel. What were you camera settings when taking the two images with the telescopes. I've just taken the leap to but the t ring adapter and relevant equipment to try this with my celestron
Since I wan't guiding, I just did 30 sec. subs at ISO3200
I got my very first dob the Apertura 8 inch Dobsonian which comes in monday and I plan on getting the Apertura 6" f/5 Newtonian OTA - 6F5N next for my first newtonian telescope.
How can I like this a million times?
Having recently made the switch to a newtonian from refractors, I say it's totally worth it if you have a bit of experience. The images are so much better even than expensive refractors. Yes it's hard to get everything working well but that's part of the fun. Plus the challenge pays off greatly
The amount of light they gather though is probably a huge win
Thank you for this video. I downloaded photos and compared. Part of the comparison, I separated stars and nebula using StarNet and found the Newtonian actually captured far more details of nebulosity. I'd definitely go with Newtonian.
Hi Nico! Unfortunately, iOptron has discontinued the SmartEQ mount. For a small OTA, that would have been a great mount. Explore Scientific has their EXOS-100, which you can get for about $730, if you include the azimuth adjuster, which is optional. Personally, I'd spend the extra $270 and get the EXOS-200 GT with PMC-8 (both scopes have the PMC-8) for a more rugged scope. It puts it more into the HEQ-5 range. You could also suggest the SkyWatcher EQM-35 for about what the EXOS-100 would be if you get the azimuth adapter.
I also thank you for the image of the Pleiades with the Apertura 60. If you and HighPoint Scientific can make it happen, I'd like to see a review of the 72.
Hey Nico! Just made a video on a 3 second exposure of the Orion Nebula, but it looks completely different to the actual nebula. Any reasons why?
How exactly are you able to explain technical aspects so clearly and concisely?? 😎
Thanks
I went ahead and pulled the trigger on the Svbony SV50370ed + the reducer, and it's fantastic. Crisp and sharp and promised. Works perfect on the Eqm35 Pro with my T6 Canon. Best bang for the buck.
Can u link me the reducer that you are using? :)
@@chrissehm2989 SVBONY SV193 on Amazon, funny thing about it is that it costs more than the one for the 80ed.
Is that really so good?
Not being an APO?
@@antalperge1007 the trade off is that the stars can have blue halos.
For a budget set up in a city, I would go with something really short, like an Askar 135 or similar paired with one of small pixel mono cameras like say QHY5III 678M and a CLS/UHC filter. Plus a low weight but has a good tracking EQ mount. Something up would be a RedCat or a good small corrected refractor (quadruplet or what have it) with a bigger sensor and bigger pixels + a guide setup. If you want to catch small galaxies and nebulae then it will require guiding and good tracking - probably GSO 6" RC on the cheap while a Newtonian would require more troubleshooting and tuning, especially larger ones.
I got a reflector without realizing years ago and it took me a while to learn
Real glad I found this video. It is important to me to identify just what it is I want to do with regard to astronomy. Making bad choices can get expensive quickly. After watching several videos I found this one by Dan at Nebula Photos. Of course all the videos helped some but this one has made the top of the list for me. Thank you for making this well-presented and informative video.
Thanks!
Hey mate!
I love your video and watch a few of your videos....i need your help to find a good and cheap telescope so that i can hook my phone on. What do you rec. to buy and what do i need to look for i see that it gives 150x zoom and stuff its like read chines words and i cant read them lol....
Anyway i hope you got time to link some that you rec. on Amazon or anywhere, i live in Norway.
Sorry for my bad english and i wish you the best, Keep Up The Good Work
I have a machine shop and I'm feeling a crazy project coming on. I might end up making a telescope mount with crazy slides
Hey thank you. Gravity does not push down, the earth is pushing up on us that creates the effect, but there is no up and down in space......Love you :)
👍
Nico, thanks for this. I'm currently trying to decide between a 6" f/5 newtonian and the 6" Celestron SCT for mainly moon and planets. I'm leaning toward the 6" Celestron because I can then use a lighter mount.
For planets and the moon the SCT will be easier to use, has more focal length in the first place, is small and light, etc.
For the moon and planest, I would agree that the SCT is preferable. However, don't overlook a Mak-Cass. In my experience, a Mak Cass of a similar aperture has a longer focal length. Of course, that raises your f/ratio, but on bright objects like the moon and solar system planets, this should not be an issue.
Are you going to make a guide to shoot the Leonard a1 comet? I would love to see it
Great video. Small correction at 7:00. There are apochromatic scopes that have just two elements.
Just a small correction to your correction. There are NO apochromatic scopes with only two elements… these are considered semi-apochromatic. By definition an apochromatic scope is color corrected for three different wavelengths of light, thus requiring a minimum of three lens elements.
@@mmuell4021 So only a TRIplet is an APO,
not a duplet? 😊
I just got my telescope but cannot afford an computer mount. I use an old school eq german mount you just have to use manual. Unless you recommend any cheap mounts that are computerize. Thank foe your video!