Great Budget Zoom Eyepiece for Astronomy | SVBONY 7-21mm Review & Telescope Tests
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- Опубликовано: 26 июл 2024
- How well do Zoom Eyepieces work? Can they replace individual lenses for your telescope? Let's test the design and performance of this Zoom Eyepiece by observing the surface of the Moon. If you own or are interested in buying a Zoom Eyepiece please let me know about your experiences and questions in the comment section below.
I appreciate SVBONY sending me this Zoom Eyepiece to review at a reduced price. Please visit the following links if you are interested in buying this product! US buyers can enter code "MICHAELMARTIN" to receive an additional discount!!!
United States: www.ebay.com/itm/193576801147
Australia: www.ebay.com.au/itm/274571397953
Germany: www.ebay.de/itm/283875624359
United Kingdom: www.ebay.co.uk/itm/283809071527
0:00-Intro & Unboxing
2:26-Design Overview & How to Calculate Highest Useful Magnification
5:42-Real-World Test Observing the Surface of the Moon
Music:
"Lazy Walk", "Sunday Rain" and "Blue Dream" by Cheel
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Excellent review! You are truly professional at presenting a product. I'm convinced this zoom lens is suitable for me.
Glad to hear it and thanks so much!
Very Cool! Ive been looking for someone to review these so Thank You
My pleasure. It's a solid zoom eyepiece (especially for the price)
I have their 10-30mm eyepiece and love it!
Great review! I have to get one now!!
Yes you do :)
Thank you Moon for being where you are!😊
Always!
Not by chance….
thanks buddy for the review.
No problem 👍
I’ve been considering this eyepiece for a while, so I’m delighted to see this review. I have a very cheap, pretty crappy telescope (beginner’s error unfortunately), and am not blessed with a huge budget, therefore feel that a fancy, expensive eyepiece would be wasted on it. So I have been mostly sticking to Svbony products, and have yet to be let down by one. They are always seem to be far better built than the price would have you expect. Looking forward to adding this to my collection! Thank you for posting 🙏🏼.
I'm glad you found the video helpful. Yeah, this is my first SVBONY product and I was very impressed by its quality for the listed price! Keep me updated on how things are going for you with amateur astronomy.
@@LateNightAstronomy will do man, cheers! Very kind of you to take an interest - that’s rare nowadays. Best of luck with the channel, your content is fantastic.
Good video great explanation as well. 👍👍
Glad you liked it! Let me know if you have any questions on anything in the future! Clear Skies!
Great video! I was purchase this Zoom eyepiece as well :-)
Awesome. It's a nice product!
I've got one of those Svbony zoom eyepieces, it is my favorite eyepiece among the few that I have.
I've been impressed by their quality and price.
I've always been happy with Svbony products. I have a Celestron zoom eyepiece and I leave it on my first refractor scope all the time, Its great for the moon and planets. Yes, you have to refocus as you zoom but that's easy to do. Nice review!
I'm glad you enjoyed the review. Having never owned a zoom eyepiece before I wasn't quite sure what to expect but was pleasantly pleased with the views and experience!
Zoom eyepieces have come a long way. I have this eyepiece and the feel, eye relief and reduced chromatic aberrations make this worthy of casual observation in my f10 SCT. Its a good value at this price.
I agree. It's a great eyepiece for someone new to the hobby!
Hi, friend. A few months ago I bought a zoom lens identical to this one. I am very happy and satisfied with it. It is very practical when it comes to varying the magnification, without losing sharpness. It is also very easy to use. I agree 100% with your review. It is also a very accessible, compact and very well built product. I highly recommend it. I use it on a Celestron Astromaster 130mm f5 telescope. Thanks for the video. Best regards from Uruguay.
Glad to hear you have had a nice experience with it! Thanks for sharing and clear skies!
awesome video thx
No problem! Hope it helped you out a bit!
Thanks for watching! Let me know about your experiences and questions regarding Zoom Eyepieces and please visit the following links if you are interested in buying this product that SVBONY sent me to review.
US buyers can enter code "MICHAELMARTIN" to receive an additional discount!
United States: www.ebay.com/itm/193576801147
Australia: www.ebay.com.au/itm/274571397953
Germany: www.ebay.de/itm/283875624359
United Kingdom: www.ebay.co.uk/itm/283809071527
I bought one of the 10 to 30 mm zoom lens and its amazing how far it zooms in!. and I am going to get one of the 7 to 21 mm zoom!. they are worth every penny!
Glad to hear it! keep enjoying the night sky!
I’ve used the Celestron zoom eyepiece for years in multiple scopes and have to say it’s been a great piece and a money saver!
Zoom eyepieces have come a long way!!!
I have that eye piece and it works very well on my 8" SCT, It's a great eye piece when I entertaining a crowd of people With my telescope I mainly use 21 and 12 mm.
Yes, for astronomy outreach or people just getting into the hobby few things beat a zoom eyepiece to wow the crowd.
Thank you for taking the time to review so many products. As expensive as eyepieces are as well as the initial investment I made with my new 10" Dobsonian, a little savings here and there is nice. Again, thank you for giving us beginners your opinion on so many things. Very appreciated.
You are so welcome! I've got a video on budget light pollution filters coming up in October or November.
i just ordered this from amazon cant wait to try it out what i like about it is dont have to buy differnt eyepieces
It's a nice product and a good quality eyepiece for the price. Stop back by and let me know how it works out for you!
i will should be here tomorrow just hope ots clear tomorrow so i can get out and try it out @@LateNightAstronomy
Great Review!! I think I should Get a Zoom Eyepiece Some time. Tired Of Having Collection of Eyepieces!! Thanks for this Review!!👍
Same! I might get a zoom eyepiece too for when I get my new telescope on Christmas 2021 👍
I'm glad you enjoyed the video! They are a fun way to observe the moon and planets in particular!
Yep. Got it! 👍
Nice. Let me know what you think of it!
Great video. I love Svbony brands as an budget amateur just getting started. Almost eveything I use is by them.
Same. Honestly I think just getting this and a lunar filter is almost all you need to start with. They make nice stuff that's actually affordable.
@@spamcan9208 I already have the Svbony moon filter and light pollution filter too. They both work as intended
@@trickster08311 I don't have the light pollution filter but I do have the variable moon filter which I also love because I get headaches easily from bright light and it lets me fine tune the image.
Glad you enjoyed the video! Take care and clear skies!
I own this eyepiece since easter. I can testify that this is a HONEST REVIEW.
Thank you very much!
Do you like it?
Nice review, thanks. After 30 years using fixed eyepieces, I'd probably be taking it out to change magnification. :))
It is definitely a different kind of experience zooming in and out on objects versus switching out the eyepiece.
Amazing
Thank you! Cheers!
I have a Meade LX200 EMC 10in Schmidt-Cassegrain, and i just purchased this eye piece, really looking forward to using it.
That's a great scope you have there! Let me know how the eyepiece works out for you.
@@LateNightAstronomy thanks will do, cant wait for it to arrive!
Looks like a fabulous eyepiece. I am going to try the 30-10 zoom.
Let me know how it works out for you.
I did get a new svbony prism….it seems to be better than the original celestron. Still getting a little cloudy eyepiece right in the middle. I will try and collimate my 8” SMC again.
Nice👍
Great video. @8:00 I believe the FOV actually increases as focal length shortens. Specs on their website show that from 7-21mm it's 57°-40° (if I read that correctly)
I liked their variable lunar filter so I took a gamble and bought their 7-21mm zoom 2 months ago.
When you attach the variable filter it makes for a great lunar eyepiece. It takes some fiddling with but you'll get a feel for using both together.
So far it's my favorite and most versatile eyepiece.
My telescope is a Meade Infinity 90mm for anyone curious.
On a side note if you are considering or need video ideas, how about a series for beginners on how and what to view with your telescope? The moon is a good place to start for obvious reasons but even there as a beginner I don't really know what to look for and when. Think of it like a guided tour of the craters and lava flows and the best times to see them.
Thanks for the video suggestion. I like your idea about a beginners series on the Moon. I am always looking for new ideas as the channel grows! Your comments are always very much appreciated and I hope you are getting some good use out of the Meade 90mm. Clear Skies!
Awesome, I was thinking about buying it but people were always saying that those budget zooms aren't worth it. But the middle range ones are 3-4 times more expensive then this one. I'm definitely buying it after that review.
I bought mine two months ago and love it. I have a Meade Infinity 90mm and the 7-21mm zoom version. It works great on the moon with a lunar filter screwed in.
Glad I could help and thanks for your comment!
This zoom punches well above its price tag, very nice on the moon and planets. Orion sells it as an E-Series 7-21 zoom eyepiece, i posted a lengthy review of it on there before these zooms became popular, they are nothing like other cheap zooms which should be avoided. You cant go wrong with this zoom.
Just bought one myself. (Thanks to this old review) Great little eyepiece. No more swapping! I also bought their laser collimator. Came perfectly collimated already.
I'm really liking their products. Good bang for the buck
Glad you enjoyed it!
Wow! Amazing eye piece 👍
Thank you for Guidelines sir😊
Most welcome 😊
I have been wondering about investing in a zoom eyepiece when I upgrade to a 12-inch dob sometime in the next year or two. My current scope, a 4.5 inch Newtonaian EQ that I've had since the early 90s, is 0.965 inch eyepiece barrel size so I will have to invest in an entirely new set of eyepieces. This gives me some good food for thought.
I'm glad you found it helpful. I went from a 4.5 inch reflector to an 8 inch dobsonian about ten years ago and am considering a 12 inch dobsonian for my next purchase as well. What brand are you considering?
Great review thanks
Quick question does this have threads under the eye cup?
Like the zoom eyepiece by celestron
I'm thinking about eyepiece projection for a dslr
Thanks! The only threads I have noticed are on the bottom for 1.25 inch filters.
Brilliant video! Have you ever heard/used the Celestron inspire 100AZ refractor telescope before? Just wondering 🙌
I'm getting that telescope on Christmas this year and I'm soo excited! It's a perfect, medium sized, basic telescope I've ever found on websites for me. and definitely going to be loads better than my 'broken' Meade 600az Infinity telescope (I think that's the name of the telescope I got) 🔭😁
I had a really bad experience with celestron. Apparently their cheaper beginner products are "hobby killers" and the one I had definitely was.
I couldn't track targets in the sky and the controls were horrible.
I was afraid it was me being a beginner and not knowing how to use it but I when I got my next scope I learned it quickly.
I have not heard of that telescope but the design and look of it are really cool! My first telescope was a refractor (not as nice as the one you are looking to get) and I got some good use out of it! I own a number of Celestron products and have found them to be a solid company to buy from! Keep me updated on things and clear skies!
@@LateNightAstronomy They do make those killer RASA scopes. It's possible I got a bad design, even the best companies have misses now and again.
For all I know that article was written by some disgruntled astronomer lol.
I just picked up the inspire 100az, and it's not bad, tripod has a bit of movement, takes a bit to get use too, from what I read u will need to upgrade the eye piece . I think this zoom eye piece will help this scope a lot and also a few filters, I would recommend a svbony barlow if on a budget. Hope this helps .
I really liked the video, this eyepiece will work for a firstscope 21024 76/300 since I use the factory 4mm 20mm ones, I use these eyepieces with the svbony 137 barlow, it gives me 3x or 2x zoom with a removable lens.
It's a fun eyepiece to use. I hope you are observing some great things in the night sky!
@@LateNightAstronomy thanks
I used a Zoom EP to give me variety of magnifications and FOV to show me what i like, and what is useful. I did a celestron 24-8mm...and whave ive discovered is that i use a 24mm for 90% of my targets, so i def want a good 20-24mm ep with a huge FOV. When the planets are back in the night sky, i plan to get a good planetary EP like 6mm with decent FOV. However, i will always recomend a zoom EP to people looking to buy their first EP without breaking the bank on the "wrong" eye piece
Great insight and I agree with you on that next purchase for a more "premium" planetary eyepiece!
Nice video cheers you just convinced me to get this one over the celestron one which was 8-24 but was much more expensive I hope the quality from them isn't too much different this one seems awesome for the price and 7mm to 21 is is still higher more in terms of its magnification power is that correct ? New guy here still trying to work stuff out lol awesome channel !
I think as an early purchase for your eyepiece collection you made a good choice. Hope you enjoy it and let me know if have any questions along the way! Clear skies!
Just bought one! No, my telescope hasn't arrived yet, but I bought one of these :D
Yeah, I did the math, and it should be just fine for my telescope though :)
@@ZopcsakFeri Excellent!
First, thank you for your time in teaching us this, Sir. I'm a novice to astronomy and bird watching. It has always caught my attention and finally made it my retirement hobby. I know this is an older posting, but if you kindly have time to do so, I'd would like to know exactly how to measure to obtain the maximum output on my new telescope, and wouldthis piece be a good match for my unit, It is a Celestron omni 102. Bought it at Costco on sale, so I took the opportunity. Best regards.
I've always thought that was a beautiful telescope and have considered buying it to add a refractor to my collection. What eypeieces do you already have with it?
Thank you for your reply, Sir. Yes, at the time of purchase, I didn't have any knowledge or experience on how to use the telescope, and am currently trying to slowly get the hang of things. The telescope came with a 20mm and 10mm. Since then, I have purchased an Astromaster accessory kit from the same brand (model 94307); which it comes with a 2x lens, also with a 15mm and a 6mm eyepiece, along with different color filters (not idea how to use them, yet). I will continue to watch your videos and try to learn as much as I can. Once again, thank you!
A zoom eyepiece is possibly the most important part of a budget scope when i got my first telescope a meade 76mm/700 az it was so hard to use swapping out eyepieces with out the thing moving I nearly lost interest in the hobby I got the celestron zoom and it totally transformed the hole experience Iv now fallen quite deep in to the hobby got 5 telescopes now from wifi eq/az scopes to table top ones and dobs and the only eyepiece I use is the baader zoom I got the 7/21mm svbony for my boys to use and it's actually quite good in comparison but I couldn't recommend it as ur only eyepiece as its very narrow in comparison but its good for money and if ur only looking in the solar system there isn't much in it
Great points and advice for everyone! Thanks for sharing!
I was thinking that a couple of these in an Orion GiantView would provide a convenient way of changing magnifications.
That's an interesting idea. The only difficult would be making sure they both matched the same magnification. That would be easy for their lowest and higher power, but difficult for anything in-between.
@@LateNightAstronomy That's a good consideration. It might become fiddly if the two zoom eyepieces weren't perfectly in sync.
Like the video now
Also is there a difference in calculation between refractor and reflector? Thanks.
No, the calculations will be the same. Good question!
Will this zoomable lens work with a barrow lens. And will it work good for the celestron powerseeker 80EQ?
Should work fine with the 80eq but I wouldn't suggest using it with a barlow lens. You can always give it a try but you would almost be double stacking Barlows with how this zoom lens works.
bout to put one of these in a Barlow and put it to the max 🤣
Let me know how it turns out. You may see farther than anyone has before :)
I have been looking at it to buy. Great video will it work with a celestron127 powerseeker, also been looking at a 130 reflector atf5. The price is good also 49dollars or less,saw it for 44$.
Yeah, it should work well with the Powerseeker.
thanks for you video.. Question: is this piece an erecting eyepiece?
I don't believe it is but Svbony does sell this eyepiece with an diagonal adapter for erecting images if you are interested!
I bought the svbony sv191 very stiff and hard to adjust the zoom.decided to get the starguider zoom much better in my opinion!
I'm glad you found a nice zoom eyepiece. What focal lengths does the starguider zoom cover?
@@LateNightAstronomy it’s 7-21mm I have the full set of bst starguider ed eyepieces they go for 50 pounds each and have 16mm eye relief and 66 field of view! Excellent for the money!
could you use a 5x barlow with a .5 reducer?, would that reduce it to 2.5 ?.
You could do that but the more glass you introduce the more imperfections you will get. I personally would recommend not stacking a barlow onto a zoom eyepiece but you can always give it a shot.
How you can look in to moon and record together in live view?
I had my cell phone connected to the eyepiece while it was zooming in to make the video.
i have a Celestron - AstroMaster 76EQ. will this zoom lens and a 2x barlow lens improve it.
I probably wouldn't use it with a 2xbarlow but this zoom eyepiece by itself should work well for you.
Молодец! 🎉
Спасибо
Could this eye peice work with helios 5.2 quantumn binos
I suppose it could but I've never tried out a zoom eyepiece on a pair of binoculars before.
How did your filter fit on the eyepiece? Did it screw in all the way. I have Zhumell filters and it feels like the threads are wrong on the SVBONY 7-21mm eyepiece.
Most eyepieces have standard thread filters for 1.25 inch or 2 inch filter.
You know they have a wide angle 7-21 now? I think 40-65* This will probably be the one I go for. That and a 2X Barlow for the higher magnification (3.5) I think will do it.
That is good to know. I think that might improve upon some of the issues I had with eyepiece.
Hi , I just got a Tasco Reflector Telescope as a gift and I bought a 90° erecting prism for the scope but it seems like it does not work it looks blurry and I need some advice on what can I do or buy for it, because the images look upside down. The focal length on my scope is 500mm and objective Diameter is 114mm. I’m not sure if I bought the right one. Thank you. By the way your video are great.
My guess is you won't need an erecting prism for a reflector. Did any eyepieces come with it?
@@LateNightAstronomy Yes it came with SR4mm, H10mm, H25mm and a Barlow lens 3X. But if I look around everything is upside down. So this type of telescope don’t work with 90° prism?
@@gladysbruno2190 Correct. You would typically only use a prism with a refractor, not a reflector.
first thing I noticed is YOU STOLE MY T-Shirt
You must be a person of good taste!
Does this have click stops like the Baader zoom?
No it doesn't
Would the celestron be of better quality ?
I can't say having not tried that one out! I own several Celestron products and find them to be high quality as well. My guess is that they are very similar in design and performance based off of what I have read about it!
Purchased this lens. Love it, but am trying to figure it out in combination with their 5x barlow lens. Image seems possibly too magnified as image is blurry after attempting to focus
Yeah, a 5x barlow lens will be overkill and lead to blurry images in almost every case. You could try a 2x or 3x barlow lens but in my experience it's best to use it just by itself.
@@LateNightAstronomy do you know where that 5x barlow would be suitable?
@@ntbarone Honestly, a 5x barlow lens is not gonig to be useable for more of anything. I would look to get a solid 2x barlow lens (I've got another video on that topic too) You could use that 2x barlow for any future eyepiece and possibly even your zoom eyepeice. Most barlows I've bought are around 25 to 40 dollars.
Thank you so much. Just purchased both 2x and 3x
@@ntbarone Excellent. Let me know how they work out and anymore questions you may have.
I'm considering this or the Celestron 8 24 zoom. Do you think this is a better option?
I have read good things about both. I would go with the most affordable one you can find out of these two.
@@LateNightAstronomy thank you 👍
Can i use this one with a focal reducer 0.5x?
Sure. Should work fine with it. Let me know how it works out for you if you give it a try.
Forgive me, but I'm confused about your last calculation with the max number of the eyepiece being 21mm. Can you tell me how you came up with the 171 number using this adjustable eyepiece?
I have a 650mm with a max eyepiece of 25mm. This gives me a total of 26. My diameter is 6" X 30 = 180. Did I miss anything?
My telescopes has a 1,200mm focal length so at 7mm it gives me a magnification of 171x and a 21mm it gives me a magnification of 57x.
1,200/7 and 1,200/21
How far can you reach through your 8" dobsonian, because I'm planning to buy one
It is my number one suggestion for a first "serious" scope to get into amateur astronomy. I've located all of the Messier objects and love it for planetary observing as well.
Me? About 1.5 arm lengths 😂
Se puede utilizar con un barlow x2
No usaría un barlow 2x esto
Cool but I'll stick with prime lenses, thanks
Probably the best call quality wise for most scopes but the zoom lenses are fun to use!
Did anyone else see something in that moon shot that was weird?
'
yeaa see that hot air on the moon during day time...
or air ozone on the earth with air wave
The atmosphere is always the enemy to observing.
Can you use it with a barlow?
You could but it is pretty much already a Barlow lens built into an eyepiece.
What is the name of the Telescope is it Dobsonian? and how many inches?
It's the Orion XT8i Dobsonian.
Monta anche sui cannocchiali serie sv?
Si adatta a qualsiasi portaoculari di dimensioni 1,25 pollici.
It turns out that SvBONY produces 5 zoom eyepieces. A $150 3-8mm 6 element zoom eyepiece SV215 with a 56 degree field of view (FOV) and 10mm eye relief. A $40 7-21mm 6 element zoom eyepiece SV135 with a 57-40 degree FOV and 18-16.3mm eye relief (this is the one you tested). A $40 10-30mm 5 element zoom eyepiece SV170 with a 51-33 FOV and 17-18.5mm eye relief. A $64 8-24mm 7 element zoom eyepiece SV171 with a 56-38 degree FOV and 18-19.5mm eye relief. And a $80 7.2-21.6mm 7 element zoom eyepiece SV191 with a 65-42 degree FOV and 18-20mm eye relief (this is the one I bought).
Yes. They have greatly expanded there product lineup over the past two years.
Baader, pentax, televue all make zoom eyepieces if your pockets go that deep!. were 200 to 300 dollars.
Those are some great brands! Too much money for me right now but amazing quality from what I've read.
What is the eye relief like on this please?? Spectacle wearer here!!
Not that good when fully zoomed out. Pretty good when fully zoomed in. If you have to wear glasses when viewing I would probably not recommend this.
@@LateNightAstronomy thanks for the prompt response. Much appreciated. Any other recommendations please???
@@Smufter69 For good eye relief I would suggest looking at something like the Orion Planetary Eyepiece line. I own them and find them very comfortable to use.
@@LateNightAstronomy thank you. I'll take a look. Happy hunting 👍👍
I've got the 7-21mm and 10-30mm with a Newtonian 114mm and they don't focus. Other no-zoom lens works perfectly. Maybe i'm ignoring a ocular-physical condition
What telescope do you own. Some require a focus extender to achieve focus?
@@LateNightAstronomy Its a celestron powerseeker eq114. Thanks for your answers, Did you mean 'exterder' as a barlow x2 o x3?. Have always nice skies night, Master @LateNightAstronomer
@@placeofjose1 It sounds like the focal point of those eyepieces isn't working with the focal point of your telescope. Sometimes a simple extension tube is need. Make sure the eyepiece won't fall but try to slowly move it towards you when it's in the focuser. Adjusting that height and seeing things as more sharp might tell you that it just need an adapter to have it sit higher in the focuser.
how compares it with the Baader Zoom Hyperion?
Search RUclips, there's at least two comparison videos that I remember watching before buying this eyepiece.
I don't know but as was mentioned, I'm sure there are other reviews of that product out on the internet!
the baader is a brilliant eyepiece, as is the svbony, but the baader is darker and has more contrast and nebulosity. although for the average beginner the difference may go completely unnoticed so the extra £100 may be completely wasted. to someone who has been into astronomy for a couple years and has a fair bit of experience with astronomy, the baader is worth the extra penies.
@@simoncarlisle7368 Great advice!!!!
Is it compatible with a Barlow Lens? :D
Yes, but you would almost be double stacking barlow lenses at that point. I would suggest not using a barlow for this to get the best images possible.
This zoom works well with a barlow lens, if your focal length is long you may not need one and hit the maximum magnification your telescope is capable of before going into empty magnification territory and don't forget that the atmosphere limits how high a telescope can go and this can change from hour to hour, day to day.
2X Barlow lenses where the nose piece screws off, these are usually black at the top, silver in the middle and black at the bottom can convert the 7mm setting with the nosepiece at 1.5X to 4.6mm and 3.5mm with the 2X.
One example, a Skywatcher Heritage 130p has the ability to go up to 260X under excellent atmospheric conditions, likely 200X or less most of the time. It has a focal length of 650mm, at the 7mm setting it only gives 93X which is ok for many things but not enough for for others so in the case a barlow lens would be useful for the moon and planets giving 134X with a 1.5X nosepiece and 186X with a 2X barlow, reasonable.
Another example, the 7mm gives 143X in my 8inch, with the 1.5X nosepiece, 218X, not bad but i can go higher quite often with the 2X to 286X, rarely go higher due to atmospheric limits.
Stacking barlow lenses is a valid way to increase magnification, many expensive eyepieces contain a barlow but they call it a smyth lens and those same companies sell barlow lenses and telecentric lenses to use with them or eyepieces sold by other brands.
I bought a old 102 mm Celestron... when I used this adjustable lens everything was foggy hazy... I blamed this eyepiece...turns out the objective was in backwards and everything was chain smoker dirty even after initial cleaning... it's a awesome EP...
Though a 24.5mm was max for the setup the scope easily went to EP 7mm...your ON the moon... 7mm is pushing it for Saturn... it moves by fast but its big and viewable...
Eqip. Celestron 102mmX1000FL using a 5x Barlow and this EP
Glad to hear you had a great experience with it.
Sir how many telescope have a used mm i don't know English
Do you own a telescope?
I have a astromaster 70 AZ telescope
Imagine if they also introduce an ADJUSTABLE barlow lens too? isnt that amazing? no more replaceable of eyepiece magnification and also for barlow multi switch
Good thought!
I have a question. I bought a zoom eyepiece (7-21mm) but I need to take the telescope focus all way in and it still isn't totally in focus. Do I need an extension tube? That seems backwards to me. Wouldn't an extension tube move the zoom eyepiece further away?
What telescope are you using it with?
@@LateNightAstronomy 120mm Orion refractor
@@LateNightAstronomy 120mm Orion refractor
@@t.j.144 That's odd. My guess is that your specific telescope is designed more for astrophotography which impact the focus distance on something like this zoom eyepiece.
The so-called in-focus on some refractors isn't short enough, so the only solution is to add a Barlow lens to bring the focus point back to the eyepiece. It seems counter intuitive but its the same problem as when using a binoviewer on short focus travel refractor tubes. SCTs generally don't have a problem - not sure about Newtonians as that will depend on how close to the secondary mirror you can get with the 'in-focus' travel and not cross into the light cone to the main mirror.
21 mm on this is better than the eyepiece that came with my telescope’s highest
I'm glad to hear that. What are you enjoying views of right now?
@@LateNightAstronomy its come around that time of year where u can see Jupiter and Saturn in the night sky and i used the eyepiece i have now for it, but it was still blurry
you don't realize just how fast the moon is moving, until you try to zoom in and hold on a area!.
So true!
Actually, the earth is the one that’s moving so fast
405th like
Congratulations :)
I bought this and when I looked through it everything was upside down. Is that how its supposed to be or is it broken or not right.
If you are looking through a telescope most things will probably appear upside down because of the telescopes mirror. For space ir doesn't really matter, for landscape or bird watching that can be annoying.
I bought this eyepiece and looked at the sun and a black hole opened up and now I'm inside please help. Just kidding no sun gazing and I just got it and have not tried it because I'm waiting for the sun to go around to da other side of da Earth.
It's always best to wait for the sun to go down :) Let me know what you think of it once you get to do some observing with it.
I got this for free
Very nice!
@@LateNightAstronomy Happy New Year!😅
sounds like a sponsored review
In my opinion, Svbony is a tricky brand... it costs a bit less than "normal" APO scopes, but the quality is much poorer.... worst brand ever, great dissappointment.... never buy this brand again!
I've only used a few of there products, primarily this eyepiece and a ligh pollution filter for Astrophotography. Thanks for sharing your experience with everyone.