ZWO and SVBONY 30mmF4 Guide Scope Review

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  • เผยแพร่เมื่อ 11 ธ.ค. 2024

ความคิดเห็น • 125

  • @claude77573
    @claude77573 2 ปีที่แล้ว +2

    I think it's important to clarify some misconceptions presented in this video. Please see the video "PHD2 a Quick breakdown - Bruce Waddington". Bruce Waddington is the current developer of PHD2. First, the better the focus, the better your guiding results. You are not well served by a slightly out of focus guide camera. Please see 59 min, 32 sec of Waddington's video, as well as 31:31 and 38:32. Secondly, you do not have to align the guide camera in a straight up position. See 7:58 into the video, as well as 23.11 which displays PHD2's calibration results which resolves the relationship between the camera's x-y axes and the mount's DEC and RA axes.

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว +1

      Orienting the camera on its x and y axis just speeds up calibration. This applies more strongly to those of us running off of older computers or rasberi pies.
      As for Bruce comments on focusing. He is wrong. There are plenty of well-reputed authors out there. Charles Bracken and Chris Woodhouse to name a few that state quite plainly in their books that slight out of focus improves the centroid detection.
      If I were to get technical about why it is bene facial to be slitty out of focus some statistics is in order. 68-95-99.7% rule is the standard for a normal distribution and this presents the algorithm with the best centroid detection. Using this method centroid detection can resolve the central point of a star 10x smaller than the pixels of the camera.

    • @claude77573
      @claude77573 2 ปีที่แล้ว

      @@TheNarrowbandChannel First of all, thank you for posting the review of the cameras. I found it very informative and interesting. For speeding up calibration, I would think that you have to be running on a very, very old computer or rasberi pie to see a significant difference in the calculation of sines and cosines need to resolve the difference in x-y axes and RA/DEX axes. These computers would also struggle with running things like planetarium software, USB data transfer, image capture and storage, etc. As for the focus issue, Bruce's specific comment is "there is some old advice that is no longer relevant". The references I think you cite (Deep Sky Imaging Primer, Charles Bracken, 2013 and The Astrophotography Manual, Chris Woodhouse, 2017) are at least 4 years old. But I am impressed that you invested in these expensive reference materials and have developed a deep knowledge of astrophotography. To me, astrophotography is as much of an art as it is a science, so we each can decide on the approach we'd like to take!

  • @chewyfoks1840
    @chewyfoks1840 3 ปีที่แล้ว +10

    The SVBONY is a fantastic guide scope. They are probably made in the same factory thb!

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  3 ปีที่แล้ว +7

      I am actually in manufacturing myself and do a lot of this stuff. I did take each completely apart once just to see how they are made. I would say they are most likely not made in the same factory as the machining style is way different.
      However you do bring out a good point that most of this Chinese imports are made in the same factories.

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  3 ปีที่แล้ว +2

      I should have mentioned this in my video. Next time ;)

    • @chewyfoks1840
      @chewyfoks1840 3 ปีที่แล้ว

      @@TheNarrowbandChannel Not a crit at all, they are very similar quality though. Great for what they are made for.

  • @ferenc-x7p
    @ferenc-x7p 3 ปีที่แล้ว +2

    There are also several same SVBONY cameras, without the brand name. I bought one with no name or no company indicated from Ebay , cost me $40. I've been using it no problem, works as it should.

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  3 ปีที่แล้ว

      I would try one but am so bad with drivers I am afraid to.

    • @freddylq67
      @freddylq67 2 ปีที่แล้ว

      Can you post a link ?

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว +1

      @@freddylq67 www.svbony.com/categories/astronomy-camera/

  • @southernexposure123
    @southernexposure123 3 ปีที่แล้ว +3

    I'm just now seriously researching autoguiding. I learned new things from this video about the guide scope. Thanks for sharing.

  • @michaeledmonds3027
    @michaeledmonds3027 6 หลายเดือนก่อน +1

    Very glad I found your excellent video...I bought the 30mm Svbony and the ZWO ASI120MM guide camera for my 60mm and 80mm refractors. They will be mated to an AM5 and controlled by an ASIAIR.
    Thinking I'll need something bigger to guide my C6 with 6.3 reducer flattener? Your thoughts please? Michael

  • @Muesli711
    @Muesli711 2 ปีที่แล้ว +7

    9 ounces = 255g
    12 ounces = 340g

  • @lenn15
    @lenn15 2 ปีที่แล้ว

    Your review is still a thing in late 22. Thank you. My SV165 is on its way :)

  • @papalovesmia
    @papalovesmia 3 ปีที่แล้ว +4

    Can you tell me where you got the blue ring that you have mounted on the ZWO Mini? I assume you use it as a stop for focus purposes.

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  3 ปีที่แล้ว +4

      farpointastro.com/products/farpoint-parfocal-ring-1-25-inch-eyepieces?variant=40161548042393¤cy=USD&

    • @enidrajm
      @enidrajm 2 ปีที่แล้ว +1

      @@TheNarrowbandChannel This $10 ring just saved from picking up a $130 helical focus scope. Thank you!

  • @MrGp3po
    @MrGp3po 2 ปีที่แล้ว +2

    Very nice review. I use the Svbony SV165 30mm with an ASI120MM Mini cam; works great. Any idea why it is called SV165? Rather than SV120 to denote focal length.

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว

      A very good question. I am sorry I do not have the answer to that one. Ill ask around.

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว +1

      I have an answer. They already have a product called an SV120 but its a rifles scope so they had to use a different name. What the 165 is for though remains a mystery.

  • @astrogerard2022
    @astrogerard2022 2 ปีที่แล้ว

    Great review and comparison. Thanks.

  • @abulka
    @abulka 10 หลายเดือนก่อน

    I don't understand the last point about the svbony being able to rotate and the zwo cannot. The cameras for both can be rotated, so whats the point of the svbony being able to rotate inside the rings?

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  10 หลายเดือนก่อน

      You will not have to calibrate and you can also choose where the USB cord comes down to keep it a lower profile.

  • @ManuMT-Drone
    @ManuMT-Drone 3 หลายเดือนก่อน

    Hello, the Svbony, it comes with an adapter to attach it to the flash shoe of a SLR camera, to put it on top? Thanks

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 หลายเดือนก่อน

      That was something i had on hand already. They are really cheap though.

  • @deeber35
    @deeber35 2 ปีที่แล้ว

    I have the Sky Watcher AZ-GTi mount in EQ mode. Can it track with a 400mm lens on a crop sensor without auto-guiding? I've had success at 300mm.

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว

      It should be able to handle that weight. I would though recommend that you get a wedge so you can polar align it. Then field rotation will not be an issue and the longer FL will do even better.

  • @DeveshPande
    @DeveshPande 3 ปีที่แล้ว +1

    What is the best way to focus the sv bony? I have been having tough time at night focusing with the ASI air pro. Kee adjusting the focus by looking at the preview and keep doing this at -7C is tough.

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  3 ปีที่แล้ว +2

      Depends. If I thread on the camera then I rotate the barrel that holds the glass. If I am using a mini camera that is held like an eyepiece then I just slide it in and out till it hits aprox focus.
      By the way BIG tip. You do not want it to have exact focus. The software can better calculate the central point if it is a little out of focus.

    • @xox1011
      @xox1011 3 ปีที่แล้ว

      One thing i've done is temporarily switch the main camera with the guide camera in the ASI air app. That way I can use the focus function of the ASI to get the guide camera focused.

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  3 ปีที่แล้ว

      @@xox1011 I do that too. Good little trick.

  • @Redsnaper
    @Redsnaper 2 ปีที่แล้ว +1

    Thanks for another great informative review, as an experienced photographer BUT a complete newbie to astrophotography! I am looking for a guiding scope to mount on my OMD EM1x / 300mm/f4 & also coupled with 2x convertor, mounted on the Sky-Watcher Star Adventurer 2i. Would you recommend a 30mm scope or should I be looking at a 50mm for an equivalent focal length of 600mm & 1200mm in FF 35mm terms?

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว +2

      Go with the 30mm. You will need the higher weight. Also I would not use your 2x teleconverter. Astro objects are huge. 300mm Fl is plenty. Also, sorry I said that twice, we do not use equivalency in astronomy. :)

    • @Redsnaper
      @Redsnaper 2 ปีที่แล้ว

      @@TheNarrowbandChannel Thanks for the reply, did you mean 'lower' weight with the 30mm scope? Could you explain about not using 'equivalency' in Fl, as you know my Olympus is a 4/3 system and half the focal length of a FF system which I assume are equal to normal telescope focal lengths so in comparison my 300mm would equal a 600mm!

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว +1

      @@Redsnaper yes I meant lower weight.
      In astrophotography we do not count crop factor. Only in angle of view. So we imputes sensor dimensions then focal length to determine angle of view. Using equivalency would be far too complicated and confusing.

    • @Redsnaper
      @Redsnaper 2 ปีที่แล้ว

      @@TheNarrowbandChannel I now understand, thank you for the explanation.

  • @peterdmatthews7427
    @peterdmatthews7427 ปีที่แล้ว

    What brand is the blue ring? What a great idea?

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  ปีที่แล้ว

      Its a 1.25" lens focus par focal tool. These are pretty common on eyepiece for telescopes but are always sold as a separate accessory.

  • @cattaraugustonawanda4426
    @cattaraugustonawanda4426 ปีที่แล้ว

    Will a SVBony SV205 work as a guide camera?

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  ปีที่แล้ว +1

      This is a really good question and I do not know for sure. I know the camera does not have a guid port but no one uses those anyway. Have you reached out to SVBONY? Or maybe asked on the FB groups for SVBONY? I would actually be curious to know myself too. It seams like it would work with something like Nina or Indigo A1

  • @Soy_chelipe
    @Soy_chelipe ปีที่แล้ว

    Hi there, I recently got the SV109 60mm guide scope. But which guide camera would you recommend for this: ZWO ASI120mm vs SV905c ?
    Thanks

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  ปีที่แล้ว

      I had to really research this one because its a tuff question. The svbony sensor is newer however its not mono so the 120mm gets the approval from me for guiding. Always us a mono guid camera.

  • @zippis333
    @zippis333 3 ปีที่แล้ว +1

    Thank you for the comparasion. I bought SVBONY some time ago ... and do you know if there is any chance how to align SVBONY with main telescope?

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  3 ปีที่แล้ว

      Been thinking about this myself. No real way that I know of yet besides getting rings that have setting screws.

    • @zippis333
      @zippis333 3 ปีที่แล้ว

      @@TheNarrowbandChannel I tried to find ring for this scope, but no luck. Smallest are for 50 mm tube, nothing for 30 mm out there :(

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  3 ปีที่แล้ว +1

      @@zippis333 Found these. They would work. www.ebay.com/itm/234303367700?hash=item368d91aa14:g:ei4AAOSwlblhnp3f

    • @zippis333
      @zippis333 3 ปีที่แล้ว

      @@TheNarrowbandChannel Wow, thank you very much for the info! Will try them.

    • @MrGp3po
      @MrGp3po 2 ปีที่แล้ว

      I fiddled around with mine on a RedCat51 and could get them close to the same spot. With the 2 screws, there is a little bit of lateral wiggle room. You could try a thin shim, and/or tinker with the attachment foot.

  • @georgepistikoudis
    @georgepistikoudis 2 ปีที่แล้ว

    Very informative review and good tips. I am trying to set up a polar alignment solution with my ASI 224MC camera using the three point alignment from NINA software which does platesoving with ASTAP. What is your opinion about using the svbony / asi 224mc to plate solve?

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว +1

      I will work. A mono version would work better but i know they do not make a mono 224

  • @flaviosdereste
    @flaviosdereste 2 ปีที่แล้ว

    Do you know if would be necessary using a filter like CLS with guider (Svbony)? I ask that because my guiding image is a little bit bad and I think that is messed up my guiding.

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว +2

      I actually like to use a Red filter. It cuts down on any haze in the atmosphere and removes some atmospheric disturbance that messes with guiding. The most important thing though is that your stars are well above the noise floor.

  • @billjobes1851
    @billjobes1851 2 ปีที่แล้ว

    Why does the video look like it's shot in a fog? Was there a filter on the lens left by accident ?

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว

      It is because I am lousy at color grading. I was using Premier back then. Switched to Davinci so I do a little better job now.

    • @billjobes1851
      @billjobes1851 2 ปีที่แล้ว

      @@TheNarrowbandChannel Just my 2 cents... you're over-producing it. No need to color grade for TH-cam channels, as most video is excellent right out of the camera.

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว

      @@billjobes1851 Yes these days I have settle more or less on some presses. Video is not something I am good at but then again I do not devote very much time to this either.

  • @KennyHurstPhoto
    @KennyHurstPhoto 3 ปีที่แล้ว

    Where did you get that little blue collar on the guide camera for the SVBONY?

    • @KennyHurstPhoto
      @KennyHurstPhoto 3 ปีที่แล้ว

      Never mind, I saw your reply in an older post Thanks!

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  3 ปีที่แล้ว +2

      @@KennyHurstPhoto No Problem. I am going to do another video about this little guid scope and how to improve it. So stay tuned.

  • @Dudleydogg
    @Dudleydogg 3 ปีที่แล้ว

    I got the Svbony but don't understand how you adjust it to see same target as spotting scope but then wonder if that is even necessary. How do you align this mount?

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  3 ปีที่แล้ว

      They do not need to be exactly aligned.

    • @Dudleydogg
      @Dudleydogg 3 ปีที่แล้ว

      @@TheNarrowbandChannel I looked into that and if you are not polar aligned or at least not close it affects the time duration of exposures. so im not doing 9 hour photos so probably OK

  • @-WhizzBang-
    @-WhizzBang- 2 ปีที่แล้ว

    I have the Sky Adventurer Pro 2, and I just ordered the ZWO 120 mini with the ZWO guide scope. ;) How do you like it with your Sky Adventurer?

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว

      It's good. It is light so it makes for a good match with the lightweight rig.

    • @-WhizzBang-
      @-WhizzBang- 2 ปีที่แล้ว

      @@TheNarrowbandChannel yes, that is what I am looking for. I am using a Canon 90D and one of my lenses is the Sigma 100-400mm which weighs 3 lbs by itself!

    • @-WhizzBang-
      @-WhizzBang- 2 ปีที่แล้ว

      @@TheNarrowbandChannel I have been doing photography for years, but I am new to Astro. Just got the Sky Adv a few months ago, it works well for anything under 100mm for less than 30 secs. But anything over that, I find it very difficult to get no star trails. So I figure auto guiding is necessary for very long exposures and higher focal lengths!

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว +1

      @@-WhizzBang- Should make a great combo.

  • @nikkirazelli3250
    @nikkirazelli3250 หลายเดือนก่อน

    it's also S V Bony.. not Schevboney.. or whatever you're trying to say

  • @techer6374
    @techer6374 2 ปีที่แล้ว

    Жаль не показали, что эти Гид-телескопы показывают. Хотя бы Луну и звезду.

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว +1

      Good idea. Ill have to do an imaging video with one then.

  • @friedaspyder8485
    @friedaspyder8485 2 ปีที่แล้ว

    Very helpful.

  • @puretoronto
    @puretoronto 3 ปีที่แล้ว +1

    Guide spelt wrong in title

  • @andysPARK
    @andysPARK ปีที่แล้ว

    Thanks..

  • @nikkirazelli3250
    @nikkirazelli3250 หลายเดือนก่อน

    Zed" not Zee

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  หลายเดือนก่อน

      In my part of the world it is other way around. English is becoming very fragmented so expect this to continue to get more extreme with time.

  • @Mrcloc
    @Mrcloc 2 ปีที่แล้ว +1

    Oh no! It weighs 3 ounces more. Oh well, that puts my gear over the weight limit of my mount. ;)

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว +1

      Mainly people using star trackers would consider it an issue. Sorta wish someone made a guid scope that was a 20mm f4.

    • @Mrcloc
      @Mrcloc 2 ปีที่แล้ว

      @@TheNarrowbandChannel For sure. I'm not being completely serious. :)

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว

      @@Mrcloc I figured.

  • @hael8680
    @hael8680 ปีที่แล้ว +1

    I tried them both. The SVBONY is optically a bit better than the ZWO. The optical quality of the ZWO is equivalent to looking through the bottom of a coke bottle. I don't recommend it at all. The SVbony I only use when guiding a 135mm lens. The star shape is important when computing the star centroid and the quality of guiding is affected by it. Don't let people tell you otherwise.

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  ปีที่แล้ว

      Interesting observation on the optics of both. I had not thought to test to see which had better optics. With both of them bing double achros and at a very fast f4 I can see they would have a lot of optical issues.

    • @andysPARK
      @andysPARK ปีที่แล้ว

      Star shape? Are you referring to the optics only, or focussed/unfocussed target for guiding?

    • @hael8680
      @hael8680 ปีที่แล้ว

      @@andysPARK As mentioned above, the optics reminds me if looking through the bottom of an old glass coke bottle. Focusers are as crude as can be.

  • @mangojassal
    @mangojassal 3 ปีที่แล้ว

    👍

  • @nikkirazelli3250
    @nikkirazelli3250 หลายเดือนก่อน

    ounces? we live in the 21st century

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  หลายเดือนก่อน

      remember the largest economies were industrialized on oz. Germany when they switched saw an economic slow down which helped create WW1

  • @ayubruknani9036
    @ayubruknani9036 3 ปีที่แล้ว +2

    SV-BONY :)

  • @teleking58
    @teleking58 9 หลายเดือนก่อน

    "Metric to English"...yup.

  • @jeffslade1892
    @jeffslade1892 3 ปีที่แล้ว +11

    Metric to american please. England uses metric. The whole world except USA uses metric. For anything remotely scientific, like astronomy, use metric.

    • @OzzMazz
      @OzzMazz 3 ปีที่แล้ว +1

      Watch this Jeff. th-cam.com/video/SmSJXC6_qQ8/w-d-xo.html

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  3 ปีที่แล้ว +5

      It is a 33% difference.

    • @ronstewtsaw
      @ronstewtsaw 3 ปีที่แล้ว +1

      What is the unit of measure on English speed limit signs? What units do typical English people give for their weight and height? (Answers: miles/hour, stone & pounds, feet & inches.)

    • @jeffslade1892
      @jeffslade1892 3 ปีที่แล้ว

      @@ronstewtsaw mph, cm and kg.

    • @jeffslade1892
      @jeffslade1892 3 ปีที่แล้ว

      @@OzzMazz yes I know. I worked with standards, I even ran an international primary standard. But it beggars the question why USA doesn't use metric like everyone else. Working with american scientists and technicians gave us headaches when they persisted in using obsolete units and the attendant conversion errors. Astronomy is an international science hobby.

  • @MikeTaylor-tw5wb
    @MikeTaylor-tw5wb ปีที่แล้ว

    Metric to English... ??😂

  • @luispacheco2712
    @luispacheco2712 2 ปีที่แล้ว

    works with celestron nexguide autoguide?

    • @TheNarrowbandChannel
      @TheNarrowbandChannel  2 ปีที่แล้ว

      I would assume so.

    • @luispacheco2712
      @luispacheco2712 2 ปีที่แล้ว

      @@TheNarrowbandChannel i want to buy the SVBONY but I'm not sure if it will work, I like the nextguide because it doesn't need a computer