Telescope Size / Aperture Guide - How big of a telescope do you need for visual / astrophotography?

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  • Опубликовано: 23 окт 2024

Комментарии • 79

  • @stevenpettifer3452
    @stevenpettifer3452 3 года назад +3

    Great Video. I am just starting in astronomy. About a year now. Started with a 4 inch refractor and now have a 16 inch dob. I like to look at globular clusters and galaxies. Looks like I did the right upgrade. Thanks Vlad.

    • @AVTAstro
      @AVTAstro  3 года назад +4

      Wow, very nice road to success going from a 4" to 16"! We live in a truly golden age or astronomy having such advanced gear available to most folks!

  • @GregLloyd76
    @GregLloyd76 9 месяцев назад +1

    Vlad, really agree with all your comments. I like you realistic assessments of what different scopes can deliver. Same with your 24” dob video. Very realistic assessment of what it’s like to deal with a scope of that size and what it can deliver. Thanks for the videos

    • @AVTAstro
      @AVTAstro  9 месяцев назад

      Thanks for the feedback! I really appreciate it and happy you found the info useful.

  • @astroblast9352
    @astroblast9352 3 года назад +1

    Totally agree with your thoughts. I've topped out at 10 inch for my situation. Adding night vision had made up for smaller aperture. 16 inch dobs are very nice. However, I'm more of a refractor fan. 5 inches is the sweet spot for me for refractors.

    • @AVTAstro
      @AVTAstro  3 года назад +1

      Night vision is one thing that I would love to try some time!

    • @astroblast9352
      @astroblast9352 3 года назад

      @@AVTAstro it's pretty cool. It's not as good most of the time compared to EAA, but it's real time and easy to use. In light pollution it reminds me of dark sky views with glass. Some objects are better some are not. But it does give a big boost to what you can see in light pollution. It's very visual observing like to me. Can use alt/AZ mounts no problem. Hopefully you can try it at a star party sometime.

  • @juandavidbarrada
    @juandavidbarrada 3 года назад +2

    That is a pretty impressive telescope collection! Thanks for the video. With this great content, I’m sure soon you’ll have thousands of subscribers!!!

    • @AVTAstro
      @AVTAstro  3 года назад

      Thanks for the kind comment!

  • @marvhalsey7544
    @marvhalsey7544 8 месяцев назад +1

    Wow!
    I have access to a 30" dobson in my club's observatory.
    I'm not licensed to run it, but have viewed some great planetary objects. Io transit, etc.
    I do have access, and can run my club's C14 EDGEHD. It has shown me my first observation of the Ring etc.
    My question is what EPs are necessary for great planetary visual viewing with a C14?
    And what filters do you recommend?
    Thanks for all you contribute to amateur astronomy!
    Marv

    • @AVTAstro
      @AVTAstro  8 месяцев назад +1

      Hey Marv, sounds like your club is packing some serious scope heat! Wish my club had that. eyepieces for the c14 on the planets I would recommend the Baader Classic Orthos. They are about as sharp as they get and less than $100 per unit. AgenaAstro affiliate link: bit.ly/49Riydl
      Filter wise I personally prefer the planets unfiltered most of the time, but when I do use a filter its the Baader Moon and Skyglow filter. With a c14 the image is likely going to be too bright at lower powers. So unless your seeing is really good and you can use over 300x you will want a polarizing filter to dim down the image.

  • @jimmyjango5213
    @jimmyjango5213 Год назад +1

    Coming from a 300mm (12") Dob, I think 400mm (16") Dob will be the way to go with respect to your comments about transport. Skywatcher do a collapsible 400mm that makes transport a breeze and no other scope bigger than that has that capability with the quick setup of their extendible tube design - I like easy. That light gathering ability almost double the 300mm should be delicious.

    • @AVTAstro
      @AVTAstro  Год назад

      Sounds like a good way to go👍

  • @JamesAdams-ev6fc
    @JamesAdams-ev6fc 3 года назад +1

    I like your telescope collection. I own four scopes: a Meade 80 mm APO, an Explore Scientific 152 mm Mak-Newt, a 130 mm Stellarvue, and a 203 mm R200 SS reflector by Vixen Optics. The main problem is that I live in a very light-polluted part of Florida and my backyard is small. I'm hoping to move soon!

    • @AVTAstro
      @AVTAstro  3 года назад

      Very cool, yeah having a darker sky is about the nicest "accessorie" you can get👍

    • @PureAwareness76
      @PureAwareness76 Год назад

      Hi, great!
      How do you find, is a 70-80mm APO good for visual? With a Barlow good for planets?
      Can't decide between a 127 Mak and the WO Zenithstar 73. Thnkx 👍

    • @JamesAdams-ev6fc
      @JamesAdams-ev6fc Год назад +1

      Hi. A 70-80 mm APO is great for the moon and for wide angle viewing of the Milky Way. With a SAFE solar filter it is good for solar viewing but you have to be sure of the filter. Never look at the sun without safe filters. A 70-80 mm APO is also great for large objects like Andromeda and the Hyades. And finally, it is great for daytime viewing of birds, etc. @Petrusss8

    • @PureAwareness76
      @PureAwareness76 Год назад

      @@JamesAdams-ev6fc
      Thnx 👍

  • @DavesAstrophotography
    @DavesAstrophotography 3 года назад +1

    Nice collection of gear in your cave! It's amazing how quickly things accumulate.

    • @AVTAstro
      @AVTAstro  3 года назад +2

      Thanks! Yeah they add up quick. When my wife asks me how many scopes I have I tell her the truth: "I don't know". LOL!

  • @przemysawjordan9064
    @przemysawjordan9064 2 месяца назад

    Hello, it's great that you share your knowledge and vast experience, thanks to which we amateurs can avoid many mistakes with a wrong purchase.
    You say many times that your favorite refractor is the 4" APO and that's why I want to buy one. In addition to the 12" Newtonian on the Dobsonian, my APO is to be operated by me, my wife and children for viewing planets, moon, sun, maybe comets, binary stars and fundamentals DSO observations.
    However, I have a problem with the fact that your favorite refractor is 4" APO with a focal length of 500 mm, i.e. f/5. We know that for contrast imaging, e.g. planets or the moon, it is worth choosing a telescope with a longer focal length, e.g. approximately f/9- 11.
    Please help me make a choice, e.g. between: TS Optics 102 mm f/7 and TS Optics 102 mm f/11 for my applications. Or maybe I should choose a 4" telescope, approx. f/5, like you?

    • @AVTAstro
      @AVTAstro  2 месяца назад +1

      For the planets or higher power viewing in general you would not want an f/5. I'd go with the f/7 option. F/11 makes it a very long and large instrument. Hope this helps!

    • @przemysawjordan9064
      @przemysawjordan9064 2 месяца назад

      @@AVTAstro Hello again,
      thank you for your quick reply.
      So I understand that you use your f/5 telescope almost exclusively for astrophotography and not visual observations?
      In other words, in your opinion, f/7 is universal and more handy, therefore better as a family telescope, while f/11, although less handy, is more specialized for high magnifications (planets, double stars)?
      A trivial choice, because at the same time it is to be a complement to the 12" Newtonian on the Dobsonian, as you already know (for the DSO).
      I have a set of Baader Morpheus glasses, shortest focal length 4.5 mm. With an f/7 telescope at a focal length of 714mm it gives a magnification of 158 (only 1.5xD), while with f/11 with a focal length of 1122 it gives a magnification of 249 (2.5xD).
      If I choose f/7 as you suggested, a good quality Barlow lens will be the solution? Please remember that this is a refractor with an aperture of 102 mm.
      Best regards and I look forward to further discussion. :)

    • @AVTAstro
      @AVTAstro  2 месяца назад +1

      The FSQ106 that I have is an astrograph. Having said that its also an amazing visual scope for wide FOV. I use a 3" 30mm 100* Explore Scientific eyepiece with it netting me a ~5* FOV!!! Overall I own a lot of specialized refractors that do something very well but not a great one scope solution for a one scope setup. From the sound of it your looking for 1 overall good refractor and that's something around f/7.

    • @przemysawjordan9064
      @przemysawjordan9064 2 месяца назад

      @@AVTAstro Vlad, thank you for further tips. It seems that f/7 will be a good, mobile solution that will help the whole family fall in love with astronomical observations. Thanks!
      Vlad, what does your extensive experience say about the system of two/three telescopes in the family? Given that I have a foldable 12" Newtonian on Dobsonian (without tracking and without Go-To), what one or two telescopes (with tracking or GoTo) would you buy to complement this 12" and create a complete system?
      I'm asking because maybe you have a better idea than mine for me and my family, better suited to our needs. I live in a small town (SQM 21.37) but it takes 25 minutes to get to heaven SQM 21.80 and I have a large car, so I can take at least two telescopes.
      Best regards and thank you in advance for your extensive answer.

    • @AVTAstro
      @AVTAstro  2 месяца назад +1

      Overall I think you have the right idea of a larger dob complimented by a refractor ~4" APO. That's exactly what I usualy use at star parties. The 4" APO is also an excellent grab and go scope.

  • @brandonm6907
    @brandonm6907 3 года назад +3

    Great video. One question as I am just getting into astronomy again since I was a younging. I am looking at 3 different scopes. The Celestron 11" HD, the celestron 8"se and the Celestron 6" vx Refractor. Id like to see great detail in all the plants as well as deep space stuff. Out of the 3 which would you suggest unless you have other recommendations. Thanks!

    • @AVTAstro
      @AVTAstro  3 года назад

      Hi, welcome back to the hobby! Out of the scopes you have listed the 11" HD will be the best scope for what you are trying to observe. The only downside to it is that it is heavy so might not get used as much. The 8se might be a better choice if it's your only scope as it's just much more portable and will get more use. If you are totally visual the only other scope I would think of is a 12" Dob. Hope this helps, Vlad👍

    • @brandonm6907
      @brandonm6907 3 года назад

      @@AVTAstro Thank you for the input!

  • @PureAwareness76
    @PureAwareness76 Год назад

    Hi, great vid 👍
    What do you think, is a 70-80mm APO good for visual? With a Barlow good for planets?
    Can't decide between a 127 Mak and the WO Zenithstar 73. Thnkx 😊

    • @AVTAstro
      @AVTAstro  Год назад +1

      For visual its more of a wide field scope for me at around 80mm. For the planets for me it's not enough aperture. I personally need at least 102mm. Reason? Image is too dim at high power.

  • @MikeLikesChannel
    @MikeLikesChannel 3 года назад

    I live in a pretty light polluted Bortle 7, with intermittent access to a Bortle 3/4. As such, my scopes gotta be pretty portable. The Celestron 6SE and my 8” Dob have been pretty delightful choices.

    • @AVTAstro
      @AVTAstro  3 года назад +1

      Yup that size scope is very easy to transport. Good to hear you like the scopes👍

  • @GreyGhost-r4z
    @GreyGhost-r4z 3 года назад +1

    I had a 16” Nightsky DOB. It was huge. I only took it a handful of times out to a dark sky. It was not a quick break down scope. If you are under 40 and in great shape it’s doable. You really need a van with ramps to move it by yourself.
    I sold it 2 years ago. I miss it.
    I have a 10” DOB now that works for me but I still want it back lol.
    I had a spinal injury and found it difficult to move.
    Great collection you have ! Great video

    • @AVTAstro
      @AVTAstro  3 года назад +1

      Thanks for the feedback! Bummer you had to get rid of the 16". But I totally understand the unfortunate fact that our health kind of dictates what scope we can handle. A few years ago I was doing home hiking with a couple of buds in Idaho and took a bad step on a slippery bolder. Thank God I did not break anything but I did tear up my leg pretty bad and strained my back. I could not handle anything more than a 80mm APO for months because of the back pain...

    • @GreyGhost-r4z
      @GreyGhost-r4z 3 года назад

      @@AVTAstro yeah I had a collapsed T8 in my back. It took about 18 months to heal. But I have the 10” DOB and a 6” I built back in 1988. I can pull it out quickly.
      I have always had Dobs. I was thinking of just getting some Rings and a nice equatorial mount. Crazy right? Probably be better doing an 8” cass and doing that. If love to try the 10” on an equatorial.

  • @scguy681
    @scguy681 2 года назад

    So for VISUAL use on planets -- what kind of scope is best for detail and what size in that choice.? Be nice to get a pic ro something that is reflective of the what you will actually see.

    • @AVTAstro
      @AVTAstro  2 года назад

      That really depends more on you local seeing conditions then the scope honestly. Also it depends a lot on you weather you will be wowed! I have given many, many people thier first view of say Saturn. Some people are floored to see just the rings, others are like:"what's the big deal".
      I'd suggest going to a star party and looking through scope scopes👍

  • @anata5127
    @anata5127 2 года назад +1

    106 APM-LOMO; 9-1/4” Edg and 15” UC Obsession. These will do everything for visual and astrophotography.

    • @AVTAstro
      @AVTAstro  2 года назад

      I'd be pretty happy for life with that lineup!

    • @anata5127
      @anata5127 2 года назад

      @@AVTAstro Great. Now, I will need step by step getting all of these.

  • @nicdelillo
    @nicdelillo Год назад

    Hi Vlad. Thanks. In case you are running out of power (emergrncy situation) Would the sct like the nexstar be usable in manual mode for visual ?(I mean no power, hand driven) I know you have shown frictions in other videos, but I wonder if in practice is usable

    • @AVTAstro
      @AVTAstro  Год назад

      No the Nexstar SE line is not usable un manual mode unfortunately.

    • @nicdelillo
      @nicdelillo Год назад

      @@AVTAstro Thanks Vlad. What would you consider a good mounting in combo of a mak/sct 5-8inch that could be used both with automatic tracking and manual use.. I have spot the AZEQ avant, with possibility to put a motor on, but not sure if viable and if there is somthing better from others brands. Would be nice to have in one mount the possibility to switch from star hoping and manual tracking, to go to (without having to go for a Dob with go to for the same experience)

  • @Astronurd
    @Astronurd 2 года назад

    I settled for an 8” Dobsonian, a 5” Maksutov and a 5” apo. I still find myself scanning the sales sections for scopes.

    • @AVTAstro
      @AVTAstro  2 года назад +1

      Yeah that will probably never end... LOL.

    • @PureAwareness76
      @PureAwareness76 Год назад

      Hello, nice. And which is the best for visual? The Mak or the APO?

    • @Astronurd
      @Astronurd 5 месяцев назад

      ​@@PureAwareness76 The 8" dobsonian.

  • @jimhackney4727
    @jimhackney4727 Год назад

    Hi Vlad. I would really like you to clarify something for me regarding focal ratio and focal length please. I'm not a complete newb. I've been observing for over 13 years and I have 4 telescopes ranging from 80mm to 8". I also understand the importance of aperture, focal length, and focal ratio. However, I can't wrap my head around one thing so I'm turning to you.
    I do not do EAA yet, but I'm gearing up to do so. I understand that I need a fairly fast focal ratio for the camera, preferably f5/f6 or faster. I also understand that I need a longer focal length for a better image scale for viewing planets or small galaxies. But I consistently hear I can't use too long of a focal length for EAA because it will make for a slow telescope (f10/f12). So the fix is to use a focal reducer. Ok, but doesn't that reduce image scale and effectively remove the benefit of a long focal length?? Is it just about trying to find a happy medium that satisfies both requirements?
    Please help me to understand. Thank you Vlad.

    • @AVTAstro
      @AVTAstro  Год назад

      Very good questions/concerns you have! So the just of it is that you gain the ability to get faster exposures(or get the image of what your trying to see faster) with lower f/ values.
      The potentially BIG disadvantage is that when your done with the ~100 large objects in the night sky that are large enough to be seen well at those lover f/ values you will be observing things at a few pixels across! I do EAA with a 12" SCT at f/10 all the time because I'm done with the 100 big objects(a long time ago). I want to see the small stuff in detail!!! Just depends on where you are on your journey, I guess.

    • @jimhackney4727
      @jimhackney4727 Год назад

      @@AVTAstro Ok I think I get it. Basically use a fast scope for everything you can as it makes the process quicker and easier, but eventually you will have to use a longer focal length due to target size. At that point you just have to track better and take a slightly longer exposure or stack more exposures. Of course aperture helps in this instance too. Thank you Vlad.

  • @michaelfrazier9537
    @michaelfrazier9537 2 года назад

    I want to be able to see the planets, Saturn, Jupiter, etc. Also, I would like to be able to see some nebula and other things. I can afford the Celestron NexStar 6se. But, the NexStar 8 would be great, but the price tag is a little out of my range right now. I currently own a Meade MTX 80.

    • @AVTAstro
      @AVTAstro  2 года назад

      There is an advantage to the 8", but on that mount honestly I would prefer the 6" anyhow. Go for it!

    • @michaelfrazier9537
      @michaelfrazier9537 2 года назад

      @@AVTAstro Thank you so much. There is a man about 2 hours from me that is selling a NexStar 6se for $800, but it comes with lots of extras. Again, thank you so much!

  • @GarnettLeary
    @GarnettLeary 3 года назад +1

    Good explanation

    • @AVTAstro
      @AVTAstro  3 года назад

      Thanks, I apreciate the feedback!

  • @jaybee7075
    @jaybee7075 3 года назад +1

    Hi there thank you for the info, from what I gather if I want to observe deep field and planetary as a noob a 10 in CT that you have would be a good start yes? or would you recommend another type I am new I currently own a 2.5 skywatcher and I am already wanting more and my budget is low so I kind of looking for an all rounder at the mo till I upskill

    • @AVTAstro
      @AVTAstro  3 года назад

      Well I would try to get at least a 8". That is a budget friendly aperture but still shows a lot of what can be seen especially on the bright DSO!

    • @jaybee7075
      @jaybee7075 3 года назад

      @@AVTAstro awesome thank you for your advise

  • @jasm0ahn547
    @jasm0ahn547 Год назад

    I hope your buddy has RICOH gear in his store!!

  • @jimpoop
    @jimpoop 3 года назад

    What camera were you using? I have an asi533 and I want to make some prints.. I just don't know if I even can with it's resolution

    • @AVTAstro
      @AVTAstro  3 года назад +1

      Looks like that camera has a resolution of 3008x3008! The ASI 294MC Pro that I use has a resolution of 4144x2822. So ac you can see you have essentially the same resolution but in a square vs a rectangle. I think your prints will come out awesome looking if you order them from someone that knows how to do astro prints!

    • @jimpoop
      @jimpoop 3 года назад

      @@AVTAstro awesome! I'll give it a shot! I'm looking to upgrade soon but am trying to decide if going mono is worth it, or if I want to just get a really nice osc.. but for now, I'll try with the 533... Clear skies!

  • @fred_albuquerque.mendes
    @fred_albuquerque.mendes 3 года назад

    so i kinda need some help...between a N114/500 and a N76/900 what should i pick? ...both are the same price...

    • @AVTAstro
      @AVTAstro  3 года назад

      Not sure what you are referring to. Send me some links.

  • @johnadams9044
    @johnadams9044 Год назад

    Speed cost money. How fast do you want to go? Same thing for astronomy.

    • @AVTAstro
      @AVTAstro  Год назад

      Good way of thinking about it👍

  • @natem7440
    @natem7440 3 года назад +1

    What brand is your 5 inch mak? ES?

    • @AVTAstro
      @AVTAstro  3 года назад

      It's actually a highly customized Meade ETX-125 OTA. It's my grab-and-go/camping scope. Love the little thing!

    • @natem7440
      @natem7440 3 года назад +1

      @@AVTAstro highly customized? Over the stock one? Care to elaborate? Flocking in the tube?

    • @AVTAstro
      @AVTAstro  3 года назад +2

      It has the plastic back replaced with a Wegat Back that allows you to use standard SCT accessories. The focus knob is 3d printed. The scope is wrapped in matte white vinyl and has a custom set of rings with handle/vixen dovetail. And to top it all off it has a $3 custom made dew shield made out of craft foam;)

  • @AzazelsWings
    @AzazelsWings 3 года назад

    Wow

  • @miker1721
    @miker1721 3 года назад

    2:07 It is said that 2/3rds of astrophotography is having good Photoshop skills.

    • @AVTAstro
      @AVTAstro  3 года назад

      I don't doubt it!

  • @DuderinoDeux
    @DuderinoDeux 3 года назад

    2D looks 3D

  • @palmereldrich
    @palmereldrich Год назад

    Its about contrast efficiency not aperture.

    • @AVTAstro
      @AVTAstro  Год назад

      Not too sure what that means. But yes a more contrast scope is better. Though I'd take a 12" uncontrasry scope to the best of the best 3" for DSO's.

    • @AntPDC
      @AntPDC Год назад

      @ Lance Doherty I'm puzzled by your comment. Grateful if you could expand on it - especially the concept of "contrast efficiency".