Results 1 to 9 of 9
Like Tree6Likes
  • 2 Post By Don Alvarez
  • 2 Post By stewe
  • 1 Post By SkyRover
  • 1 Post By SkyRover

Thread: Beginner buying telescope

  1. #1
    RickyLLL's Avatar
    RickyLLL is offline White Dwarf
    Points: 13, Level: 1
    Level completed: 25%, Points required for next Level: 37
    Overall activity: 0%
    Join Date
    May 2019
    Location
    Hong kong
    Posts
    1
    Points
    13
    Level
    1
    Thanks
    0
    Thanked 0x 0 Posts

    Question Beginner buying telescope



    I am new to telescope. Currently planing to buy a telecope or binocular. My target at this moment is just to observe the moon, and if possible with beginner telescope, jupiter and mars.

    I got few question in this post about telescope. I am looking for scope about 3 to 4 inch, and refractor is too long to carry on the public transport, so I prefer reflector.

    1. I saw some checp reflector (about 250 usd below) dont have collimation screw on the primary mirror. So when trying to cllimate, only secondary mirror can be adjusted. It is okay? Or those fixed primary mirror seldom have collimation problem?

    2. As I concern about portability, I am looking for DOB, but DOB need a table to reach my eye level, so, is it possible to have a tripod on DOB?

    Finally, my also want to take photo with the telescope (photo only, not video). Is it enough to have a manual tripod or motorized is needed, otherwise cannot take a clear picture? (Due to long exposure time and etc)

    Really thanks

  2. #2
    Don Alvarez's Avatar
    Don Alvarez is offline Bronze Supporter
    Points: 8,980, Level: 65
    Level completed: 77%, Points required for next Level: 70
    Overall activity: 13.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!5 Threads Achievement!200+ Posts Achievement!
    Join Date
    Mar 2017
    Location
    Coral Springs, Florida
    Posts
    1,550
    Points
    8,980
    Level
    65
    Thanks
    168
    Thanked 384x 284 Posts

    Default Re: Beginner buying telescope

    Quote Originally Posted by RickyLLL View Post
    I am new to telescope. Currently planing to buy a telecope or binocular. My target at this moment is just to observe the moon, and if possible with beginner telescope, jupiter and mars.

    I got few question in this post about telescope. I am looking for scope about 3 to 4 inch, and refractor is too long to carry on the public transport, so I prefer reflector.

    1. I saw some checp reflector (about 250 usd below) dont have collimation screw on the primary mirror. So when trying to cllimate, only secondary mirror can be adjusted. It is okay? Or those fixed primary mirror seldom have collimation problem?
    Can you tell us what model you were looking at? I don't really know any reflectors around that price pint that do not have primary adjustments.

    2. As I concern about portability, I am looking for DOB, but DOB need a table to reach my eye level, so, is it possible to have a tripod on DOB?

    Finally, my also want to take photo with the telescope (photo only, not video). Is it enough to have a manual tripod or motorized is needed, otherwise cannot take a clear picture? (Due to long exposure time and etc)
    There a host of different Dobsonians out there. Some tabletop models obviously require a table, and I have seen a user in my astronomy club who has adopted it to use on a mount, so it can be done. Generally speaking though, a Dobsonian is designed to be used seated. Granted, there are exceptions to this such as Dobs of unusually large aperture of focal length which can be used standing while they are sitting on the ground, and some are so tall they require you to use a ladder, but for the most part commercially available Dobsonians are best used while sitting on a stool or variable height observing chair.

    Since you are looking for something to use with public transport though, Binoculars are the obvious place to start, and for planetary or lunar observation you should consider a short refractor on a light alt-az mount that's easily transportable. Something like this:

    https://www.meade.com/infinity-80mm-...refractor.html

    Or this

    https://www.meade.com/infinity-102mm...refractor.html
    Last edited by Don Alvarez; 05-16-2019 at 05:01 PM.
    Gabby76 and Zippie like this.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    :
    10" SkyLine
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    , Celestron Nextar GT90, Meade Infinity 80
    EP: The Five Fingers of Doom: 5.5mm, 8.8mm, 14mm, 20mm, 24mm Meade 5000 UWA's
    20mm, 26mm, 32mm, 40mm Meade 4000 Plossls, 30mm, 20mm, 15mm GSO Superview,
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    Expanse, Baader Classic Orthos, Various others.
    Binocs: 15x70 Celestron Skymaster, 10x50 Levenhuk Karma Pro, 10x42 Bushnell, 8x42 Sans & Streiffe

    Member, South Florida Amateur Astronomers Association

  3. #3
    stewe's Avatar
    stewe is offline White Dwarf
    Points: 513, Level: 10
    Level completed: 26%, Points required for next Level: 37
    Overall activity: 22.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!
    Join Date
    Jan 2019
    Location
    Heidelberg, Germany
    Posts
    41
    Points
    513
    Level
    10
    Thanks
    12
    Thanked 6x 6 Posts

    Default Re: Beginner buying telescope

    Hi RickyLLL,

    I suggest not to buy anything below 4" if you do not want to start this hobby with a disappointment. I also discourage you from investing in a "tabletop" telescope.
    Reflectors with 6" aperture and above with Dobsonian mounts are great for beginners but they are not easily portable without a car.
    I suggest you to consider a Maksutov-Cassegrain telescope (MCT or "Mak"), and use it with an Alt-Azimuthal mount (similar to a photo tripod).
    MCTs are compact, easy to transport, practically maintenance-free, and provide sharp, high-contrast views of the Moon and the planets, but also of brighter star clusters and galaxies. If you care for it, you probably never have to collimate it.
    The drawback of the MCTs is that they have a bit narrow field of view because of their long focal length. But if you are fine with a maximum one-degree field (2x the full Moon across), then you will probably enjoy a Mak. A long focal length ensures that you have a well-corrected image, and is great for easily achieving high magnifications.
    For example, Maks from Orion and Skywatcher with 127mm diameter are very well-renowned telescopes. You can also use them for terrestrial viewing.

    Steve
    refractordude and Zippie like this.

  4. #4
    Ozman13's Avatar
    Ozman13 is online now HYPER GIANT
    Points: 27,661, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 82.0%
    Achievements:
    2 Posts Achievement5 Threads Achievement!20 Posts Achievement!365 Days+ Registered Achievement!50 Posts Achievement!
    Join Date
    Jun 2013
    Location
    Hopkinsville Kentucky
    Posts
    7,980
    Points
    27,661
    Level
    100
    Thanks
    164
    Thanked 2,133x 1,912 Posts

    Default Re: Beginner buying telescope

    Welcome to the forum!!

    Binoculars are going to be the easiest instrument to transport and they will show you the moon (and many things) quite well, but they will be a disappointment for the planets. Regardless of their poor planetary performance, I suggest you get a pair. They will show you a lot and will be very useful even if you do get another instrument.

    You will be much better served with a short refractor on a small alt/az mount like Don suggests instead of a reflector for MANY reasons (especially concerning ever being able to take a picture through it), biggest among these is your limited means of travel. I highly suggest the 80mm Meade Infinity refractor that Don linked to for it's performance and ease of travel.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ACF 8"SCT,
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    , SkyWatcher 120, ES 102CF Apo triplet, ES AR102, ST100, ST90, Apex 90mm Mak, ST80, ETX60,
    Oberwerk 25x100s, 15x70s, 8x56s, Kasai 2.3x40s, Celestron AVX, CG4, SLT, LCM, Obie HD Parallel Bino mount
    Explore Scientific 82 degree and 68 degree EPs, Baader 9mm Ortho, Meade 5000 SWA EP set, many more various EPs, Baader Moon&SkyGlow, FringeKiller, SemiApo filters, Celestron UHC, Meade 4000 Nebular Filter, Kson OIII, DGM NPB and lots of astro stuff.

  5. #5
    mstar74's Avatar
    mstar74 is offline SUPER GIANT
    Points: 12,961, Level: 78
    Level completed: 61%, Points required for next Level: 139
    Overall activity: 29.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!365 Days+ Registered Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    Jan 2012
    Location
    SF Bay Area
    Posts
    933
    Points
    12,961
    Level
    78
    Thanks
    134
    Thanked 294x 245 Posts

    Default Re: Beginner buying telescope

    Quote Originally Posted by RickyLLL View Post
    1. I saw some checp reflector (about 250 usd below) dont have collimation screw on the primary mirror. So when trying to cllimate, only secondary mirror can be adjusted. It is okay? Or those fixed primary mirror seldom have collimation problem?
    It should hold collimation pretty well, so it probably will not need adjustment. You would need a collimation cap or cheshire eyepiece to check collimation (or you could do a star test). You would only be able to adjust the secondary (assuming it has adjustment screws): https://www.cloudynights.com/topic/3...limation-help/. I've heard of people elongating the holes in the OTA tube where the mirror cell attaches to enable tilting the primary.
    Gene
    Telescopes: Meade Star Navigator 102; Celestron 102GT, 60LCM, C80ED, Omni XLT 150 and Az 114; Sky-Watcher 90 MAK; Apertura 10" Dob; Orion StarSeeker IV 80mm
    Mounts: Celestron CG-5, Nexstar GT, SkyProdigy;
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    Smart EQ Pro; Orion Starseeker IV
    Cameras: Olympus E-PL1, Canon T3i, Canon T5(full spectrum modified)
    Accessories: Baader 2" MPCC, IDAS LPS-D1 Filter, William Optics P-F6A-GT81 reducer/flattener, Orion MM AutoGuider

  6. #6
    SkyRover's Avatar
    SkyRover is offline Bright Giants
    Points: 4,977, Level: 48
    Level completed: 14%, Points required for next Level: 173
    Overall activity: 17.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!First 1000 Experience Points200+ Posts Achievement!
    Join Date
    Dec 2016
    Location
    Mid-South, U.S.
    Posts
    413
    Points
    4,977
    Level
    48
    Thanks
    31
    Thanked 107x 89 Posts

    Default Re: Beginner buying telescope

    I have this Zhumell Z100, a 100mm f/4 Newtonian...

    https://www.flickr.com/photos/140554...posted-public/

    The particle-board mount for it came with a threaded connection on the bottom...

    https://www.flickr.com/photos/140554...posted-public/

    The kit is also sold as the Orion "SkyScanner" 100, and the Sky-Watcher "Heritage" 100P. The Orion is also sold with a tripod...

    https://images-na.ssl-images-amazon....sL._SY879_.jpg

    Therefore, there are tripods and even photo-tripods that can connect to it...

    https://10minuteastronomy.files.word...2/07/pic-2.jpg

    However, and a big however, a 100mm f/4 has a very short focal-length(400mm, hence its compact size), and a rather large secondary-obstruction...

    https://www.flickr.com/photos/140554...posted-public/

    ...that black circle in the center of the aperture. Both of those aspects make it one of the worst choices to view the planets. It may be nice 'n' compact, and travel-friendly, but it is really only suitable for low-power wide-field views of deep-sky objects and vistas(the Milky Way). The telescope is binocular-like in that, but with a larger aperture and with the ability to change the magnification with a set of eyepieces.

    I would suggest a 90mm Maksutov. I have one of those here in the home. It belongs to my brother, but I've used it more than he has. His interests are not astronomical. He's used it only for spotting, for target practice...

    https://www.flickr.com/photos/140554...posted-public/

    ...and yes, a finderscope of that size can be quite useful, and in guiding the Maksutov through the sky. The telescope, when purchased. came with this photo-tripod...

    https://www.flickr.com/photos/140554...posted-public/

    The Maksutov has a long focal-length, and ideal for the Moon, the planets and the double-stars; some deep-sky objects as well.

    The Maksutov is the only mirrored telescope that has been described as "refractor like" in performance.
    Raymondhow likes this.
    "Look, son! Up there!" His son shouted back, "I see it! What is it?" The father regaled, "The galaxy!
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ! Our origin, our destiny!" And so the boy was hooked, and for the rest of his natural life.


    Alan - Refractors: Takahashi FS-102 f/8, Meade 90mm f/10, Antares 80mm f/6, Celestron 70mm f/13, Sears 50mm f/12; Newtonians: Orion 6" f/5, Meade 114mm f/8, Zhumell 100mm f/4; Mounts: "Deluxe" CG-2, EQ-2, AT Voyager I; eyepieces, barlows, and diagonals

  7. The Following User Says Thank You to SkyRover For This Useful Post:

    mstar74 (05-18-2019)

  8. #7
    Ozman13's Avatar
    Ozman13 is online now HYPER GIANT
    Points: 27,661, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 82.0%
    Achievements:
    2 Posts Achievement5 Threads Achievement!20 Posts Achievement!365 Days+ Registered Achievement!50 Posts Achievement!
    Join Date
    Jun 2013
    Location
    Hopkinsville Kentucky
    Posts
    7,980
    Points
    27,661
    Level
    100
    Thanks
    164
    Thanked 2,133x 1,912 Posts

    Default Re: Beginner buying telescope

    Quote Originally Posted by SkyRover View Post

    The Maksutov is the only mirrored telescope that has been described as "refractor like" in performance.
    I do agree that a Mak is a good choice for planetary viewing in a very mobile instrument. And I would agree that a Rutten Mak is very "refractor like" in performance. But not so with these mass marketed Gregorian "Spot" Maks. They are still good, but not as sharp and crisp as a Rutten which approaches that "refractor like" experience.

    And the Mak is not the only mirrored scope to achieve this level of performance. The aplanatic SCTs (Celestron Edge and Meade ACF) offer very flat and crisp "refractor like" views, a very noticeable difference to the standard SCT.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ACF 8"SCT,
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    , SkyWatcher 120, ES 102CF Apo triplet, ES AR102, ST100, ST90, Apex 90mm Mak, ST80, ETX60,
    Oberwerk 25x100s, 15x70s, 8x56s, Kasai 2.3x40s, Celestron AVX, CG4, SLT, LCM, Obie HD Parallel Bino mount
    Explore Scientific 82 degree and 68 degree EPs, Baader 9mm Ortho, Meade 5000 SWA EP set, many more various EPs, Baader Moon&SkyGlow, FringeKiller, SemiApo filters, Celestron UHC, Meade 4000 Nebular Filter, Kson OIII, DGM NPB and lots of astro stuff.

  9. #8
    SkyRover's Avatar
    SkyRover is offline Bright Giants
    Points: 4,977, Level: 48
    Level completed: 14%, Points required for next Level: 173
    Overall activity: 17.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!First 1000 Experience Points200+ Posts Achievement!
    Join Date
    Dec 2016
    Location
    Mid-South, U.S.
    Posts
    413
    Points
    4,977
    Level
    48
    Thanks
    31
    Thanked 107x 89 Posts

    Default Re: Beginner buying telescope

    Quote Originally Posted by RickyLLL View Post
    I am new to telescope. Currently planing to buy a telecope or binocular. My target at this moment is just to observe the moon, and if possible with beginner telescope, jupiter and mars.

    I got few question in this post about telescope. I am looking for scope about 3 to 4 inch, and refractor is too long to carry on the public transport, so I prefer reflector.

    1. I saw some checp reflector (about 250 usd below) dont have collimation screw on the primary mirror. So when trying to cllimate, only secondary mirror can be adjusted. It is okay? Or those fixed primary mirror seldom have collimation problem?

    2. As I concern about portability, I am looking for DOB, but DOB need a table to reach my eye level, so, is it possible to have a tripod on DOB?

    Finally, my also want to take photo with the telescope (photo only, not video). Is it enough to have a manual tripod or motorized is needed, otherwise cannot take a clear picture? (Due to long exposure time and etc)

    Really thanks
    Aside from my previous post, a 100mm f/4 Newtonian would nonetheless be far more preferable to a pair of binoculars. I own three pairs, a 7x50, a 10x50, and an 8x36 birding-pair. I rarely use them at night, as I can't increase the magnification. Also, my arms ached after holding the 50mm pairs up after a while. You can place binoculars on tripods, but you're still limited to a fixed magnification. The Moon and planets would still be too far away to see any meaningful detail.

    In any event, a 90mm Maksutov would fit your observing agenda and travel requirements best.
    Ozman13 likes this.
    "Look, son! Up there!" His son shouted back, "I see it! What is it?" The father regaled, "The galaxy!
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ! Our origin, our destiny!" And so the boy was hooked, and for the rest of his natural life.


    Alan - Refractors: Takahashi FS-102 f/8, Meade 90mm f/10, Antares 80mm f/6, Celestron 70mm f/13, Sears 50mm f/12; Newtonians: Orion 6" f/5, Meade 114mm f/8, Zhumell 100mm f/4; Mounts: "Deluxe" CG-2, EQ-2, AT Voyager I; eyepieces, barlows, and diagonals

  10. #9
    Ozman13's Avatar
    Ozman13 is online now HYPER GIANT
    Points: 27,661, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 82.0%
    Achievements:
    2 Posts Achievement5 Threads Achievement!20 Posts Achievement!365 Days+ Registered Achievement!50 Posts Achievement!
    Join Date
    Jun 2013
    Location
    Hopkinsville Kentucky
    Posts
    7,980
    Points
    27,661
    Level
    100
    Thanks
    164
    Thanked 2,133x 1,912 Posts

    Default Re: Beginner buying telescope

    Quote Originally Posted by SkyRover View Post

    In any event, a 90mm Maksutov would fit your observing agenda and travel requirements best.
    I agree. For observing the moon and brighter planets, it will do a very good job and very easy to travel with. That's how I use mine and it serves me well. You need another instrument if you plan to get into DSOs though.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ACF 8"SCT,
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    , SkyWatcher 120, ES 102CF Apo triplet, ES AR102, ST100, ST90, Apex 90mm Mak, ST80, ETX60,
    Oberwerk 25x100s, 15x70s, 8x56s, Kasai 2.3x40s, Celestron AVX, CG4, SLT, LCM, Obie HD Parallel Bino mount
    Explore Scientific 82 degree and 68 degree EPs, Baader 9mm Ortho, Meade 5000 SWA EP set, many more various EPs, Baader Moon&SkyGlow, FringeKiller, SemiApo filters, Celestron UHC, Meade 4000 Nebular Filter, Kson OIII, DGM NPB and lots of astro stuff.

 

 

Similar Threads

  1. beginner buying a new telescope
    By Wolfscope in forum Astronomy Beginners Forum
    Replies: 10
    Last Post: 08-11-2014, 08:19 PM
  2. Help on buying a telescope for a beginner.
    By Jostoll in forum Astronomy Beginners Forum
    Replies: 9
    Last Post: 07-02-2014, 02:44 AM
  3. Help with buying a beginner telescope
    By Amanda _Tom in forum Astronomy Beginners Forum
    Replies: 7
    Last Post: 12-01-2011, 08:02 PM
  4. Beginner Buying First Telescope
    By lff in forum Astronomy Beginners Forum
    Replies: 10
    Last Post: 07-26-2011, 05:19 PM
  5. beginner telescope buying
    By jacampb in forum Astronomy Beginners Forum
    Replies: 8
    Last Post: 02-17-2010, 10:33 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBulletin® Version 4.2.0
Powered by vBulletin®
All times are GMT. The time now is 01:15 AM.