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Apertura AD8 Dobsonian Reflector Telescope

Apertura AD8 Dobsonian Reflector Telescope

Manufacturer Product Number: AD8

8 Review(s) | Add Your Review

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Availability: In stock

List Price: $699.99

Our Price: $395.98

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*Scope Configuration - What is the Tweaker's Dream Package?

Introducing the Tweaker’s Dream^TM Package!

The Tweaker's Dream^TM is a package of upgrades and enhancements that raises the PERFORMANCE of your Apertura™ Dobsonian Telescope while increasing the scope’s convenience and ease of use, adjustability and appearance.

Components Included:

• Fidelio velvet lining preinstalled to the Optical Tube Assembly

• Hand-adjustable secondary collimation knobs

• Upgraded Washers for the secondary mirror

• Soft-grip guide knob

• Additional 5-hole accessory tray for base

Fidelio Velvet by JB Martin - Widely regarded as the best light-absorbing fabric on the planet, Fidelio velvet has been used by astronomers for years to line the inside of their telescopes to soak up every wayward ray of light that might otherwise spoil the image. In fact, in 2004 several serious astronomers set up a lab to test various black materials for light reflectance, and found out just how awesome Fidelio is at light absorption. But, as they say, ”a picture is worth a thousand words,” so we photographed one of our AD12 Apertura™ Dobsonian telescopes with the Fidelio velvet installed around half the Optical Tube Assembly’s interior. The other half is the standard factory, flat-black paint finish. Of course, for production units we cover the ENTIRE inside surface of the Optical Tube Assembly from end-to-end with Fidelio velvet for an incredibly elegant finish that must be seen to be fully appreciated.

Apertura AD12 Dobsonian Telescope Half Fidelio Half Stock

Hand-adjustable secondary collimation screw knobs. These adjustment screw knobs eliminate the need for a Phillip’s head screwdriver to collimate the secondary mirror (which means you don’t have to worry about dropping a screwdriver on your beautiful new primary mirror!). These black, fully threaded screws replace the recessed factory screws and extend the grip-point with a 1/2 inch diameter head to allow you to quickly and easily adjust the secondary mirror during collimation. The secondary mirror is suspended on thin metal spider-vanes which can flex under the pressure of a screwdriver, but with these thumbscrew knobs you can use a more precise, lighter touch during alignment, increasing the accuracy of the collimation.

thumb_adjustable_Secondary_collimation_screws

Upgraded Washers for the secondary mirror - Most standard Dobsonian telescopes (including basic Apertura™ telescopes) come standard with a common metal fender washer between the secondary mirror holder and the collimating screws, and with time and use, it can become difficult to accurately adjust the secondary mirror. But a couple of years ago, CloudyNights.com forum member Jason D. came up with an incredibly simple yet elegant solution. He cut a washer out of a Milk Jug (yes, literally from a discarded plastic Milk Jug) and placed the plastic washer between the tips of the collimating screws and the metal fender washer. That simple tweak made it much easier to rotate the secondary mirror, and made the collimation screws work more smoothly (and later it was decided that two “Milk Jug” washers was even better than one). Well, we knew that we couldn’t honestly call our upgrade package the “Tweaker’s Dream^TM” unless we included this nifty upgrade. But not wanting to dig through the garbage and cut thousands of washers from old Milk Jugs, we put our thinking caps on. Standard Milk Jugs are made of High Density Polyethylene (also known as HDPE) and we could easily have washers custom-manufactured from HDPE. But while “Milk Jug” washers do the job quite well, our experience in manufacturing told us that there was actually an even BETTER choice – Ultra High Molecular Weight Polyethylene (also known as UHMW-PE). UHMW-PE has higher physical strength and abrasion resistance than HDPE, meaning it will last longer. And UHMW-PE has a significantly lower coefficient of friction than HDPE, meaning that it is slicker which helps the secondary mirror holder and collimating screws move against each other more easily. So we took the “Milk Jug washer” idea and made it just a little bit better! Two UHMW washers are pre-installed with each Tweaker’s Dream^TM Package.

Oh and by the way, our washers are black and don’t smell like sour milk. :-)

Soft-grip guide knob – When you use a basic Dobsonian telescope, you generally move it around during viewing by simply pushing or pulling on the main tube. It works fine, but many experienced astronomers add a nice little knob to their Optical tubes so that they have an easy, comfortable way to guide their telescope around the sky. So we’ve included a very nice “Soft-Grip” handle that is pre-mounted in the perfect spot on your Apertura™ telescope. And the rubberized handle is much more comfortable on those chilly nights when holding the metal telescope itself isn’t your first choice.

soft-grip-guid-knob

Extra 5-hole accessory tray for base – The four-hole accessory tray that comes standard with most Dobsonian telescopes is a nice feature for a beginning astronomer. But the standard tray has only one 2” diameter hole and three 1.25” diameter holes, and most astronomers quickly find themselves running out of places to put their growing collection of eyepieces, adapters, collimators, etc. The Tweaker’s Dream^TM Package includes an additional accessory tray that has THREE 2” diameter holes plus two 1.25” holes. So with the standard tray plus the extra tray included with the Tweaker’s Dream^TM Package, you will have plenty of room to store your favorite eyepieces, a collimator, plus a handful of other accessories while observing.

5-hole-accessory-tray

Tweaker's Dream(tm) Package +$129.99
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List Price: $699.99

Our Price: $395.98

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Quick Overview

Apertura's AD8 Dobsonian Reflector gives you the big picture in a smaller package. Its 8" aperture and lighter weight make it a great starting point for a beginner and a highly transportable scope for the experienced user. Upgrade your Apertura with the optional Tweaker's Dream Package. (see below for more details)

Product Description
Specs and Dimension
Documentation
Reviews

Details

Please read John Kramer's Professional Review of the Apertura AD12 Dobsonian Telescope

and be sure to check out his VIDEO REVIEW on Youtube.

An Apertura Dobsonian Reflector Telescope is the very definition of "bang for the buck". For the base price you get a high quality telescope with lots of aperture, great features, and a nice complement of accessories (including a Laser Collimator!) And for those who demand the very BEST in performance, convenience, and professional fit-and-finish, you can add our optional Tweaker's Dream Package featuring Fidelio flocking to line the OTA, Collimation Screws and Collimation Washers, a Control Knob and an additional 5-hold Eyepiece Tray. Serious astronomy enthusiasts often add these performance tweaks and extra features to their Dobsonian telescopes after purchase in order to make them perform better, move better, and look better. But now you can order your Apertura scope with all the best known tweaks already professionally installed so that you can spend your time doing astronomy and learning about the sky, instead of spending hours on researching methods and materials, tracking down vendors, and getting frustrated with trial-and-error prototyping.

To learn more about the optional Tweaker's Dream Package, please CLICK HERE.

Features included in the base package:

Hand-adjustable knobs on primary mirror for easy, no-tools collimation

2 inch, dual-speed Micro 10:1 Crayford style focuser, with 1.25" adapter

Right Angle Correct Image (RACI) 8x50 finderscope

1.25" 9mm Plössl eyepiece (high-power) with 52 degree field of view

2" 30mm SuperView eyepiece (low-power) with 68 degree field of view

35mm Extension Tube (used to provide extra back-focus for eyepieces that need it)

1.25" Moon Filter

Laser Collimator (1 battery included)

Battery operated primary mirror cooling fan (8 AA batteries required - NOT INCLUDED)

Dobsonian base with roller bearings for azimuth and sealed ball bearings for altitude, resulting in super-smooth adjustment in all dimensions

4-slot eyepiece tray

Technical Specifications and Dimensions

Primary Mirror Diameter:	8"
Primary Mirror Details:	25mm, Parabolic, 1/12 wave
Primary Mirror Coating:	Aluminum and silicone dioxide (SiO2); reflectivity=93 %
Optical Design:	Newtonian Reflector
Mount Design:	Dobsonian, clutch mounting with tension knobs
Focal Length:	1200mm
Focal Ratio:	f/5.91
Focuser:	2 inch, dual speed Micro 10:1 Crayford style
Eyepiece 1:	2", Superview 30mm, 68 degree FOV, Eye-relief=22mm
Eyepiece 2:	1.25", Super-Plossl 9mm, 52 degree FOV, Eye-relief=6mm
Finderscope:	Right-Angle, Correct-Image 8 x 50 viewer
Star Diagonal:	1.25 inch
Limiting Stellar Magnitude:	14
Optical Tube Length:	46.125"
Fully Assembled Height:	51.75"
Optical Tube Weight:	24.5 lbs
Base Height:	27.375"
Base Diameter:	19.25"
Base Weight:	27.7 lbs
Fully Assembled Weight:	52.2 lbs

Download Owner's Manual

Customer Reviews

Awesome Scope, Awesome Value!

Review by Steve | Posted on 3/3/12

Quality
Price
Value

I just received my AD8 yesterday (only took 5 business days to get here)! The boxes were in perfect shape. Both of them were taken into the garage and I started putting it together. Everything was packed perfectly, and the instructions were very clear. When things started taking shape, I realized a couple of things. 1st, the AD8 (compared to my 4" reflector and 90mm Mak) looked like a real telescope! 2nd, its a little hefty. Not too big a problem around the house, but I'll have to make some adjustments to take it in the motorhome so neither one gets damaged. So, even with high winds at the house, I couldn't stand it and took it outside for a quick peek. Once I lined up the finder, I quickly looked at the moon (amazing), the Orion Nebula (also amazing, and I could even see it in the finder), and finally Jupiter (not so amazing). Unfortunately, I could really see the effects of the high wind with Jupiter and the poor seeing. The other problem I had was with the Crayford focuser. There is no physical problem with it, just me not being used to it and fat fingering it. That's ok, I still need to collimate and will play more with the focuser.
Overall I couldn't be more pleased with my purchase and Opticsmart!! Thanks for a great scope!!

outstanding

Review by ronnie | Posted on 3/2/12

Value
Quality
Price

I received this telescope last week after months of research. I didnt see anything on this telescope until about a week before i ordered it and seen it had more accessories than other 8 inch scopes in this price range. It came in great shape, had it set up in no time thanks to the easy instructions. The sky was perfect that night, the moon looked incredible like you were fixing to land on it, jupiter was amazing i could easily see the bands, orion nebula wow i could go on and on and on well you get it. Good quality great looks i would highly recommend this scope as a first or second scope. Thanks alot Rex keep up the good job your doing, ronnie

Outstanding Telescope and Awesome Customer Service !!!

Review by Julie Tracey | Posted on 2/22/12

Quality
Price
Value

well just to update my previous review, we finally got to use our new scope and must say that it is a most Impressive and SOLID piece of equipment!!! This is the first Telescope that we had ever purchased and we are so pleased with the service we got and even more with the product we received. We are both new to astronomy and researched everything out their about buying a scope and You guys at Opticsmart are First Class!!! We bought this as a Valentines gift to each other and you now have us as Lifetime Customers. So anyhow on to the scope. The most concern we had about getting a reflector scope was the collimation,we didnt exactly know anything about this but wow is it Simple with the included Laser Collimator. very easy to do. the thumbscrews at the front are very nice and really adds that customized feel to it. looking at the stars and planets its just amazing what you can see through this scope.the eyepieces are really easy to change out and everything fits like it should. it was very easy to adjust the finder scope and it only takes a minute to get it right. The views of Jupiter have really been a WOW experiance to be able to see the red bands around it right from my backyard. Incredible. Moving the scope around on its mount is Buttery Smooth in every direction. This is a Quality Product that i would recommend to anyone that is getting started in this hobby and getting it through Opticsmart makes it even better.. They only thing i have to complain about is that the Dobsonian base is to damn big to fit in the trunk of a Chevy Cavalier. So we made it work by setting the base in the back seat and sliding one end of the optic tube into the base and the other end resting on pillows.. Takes up the whole backseat but WOW does it look cool!!! Being noobs like we are we had a bit of apprehension about spending $450 bucks on a scope but i am sure glad we took the leap.. I can honestly say that we will be pleased for years to come with this scope and cant wait to get a barlow lens and some more eyepieces. Thank you Very Much Opticsmart....

Very nice telescope

Review by Dan | Posted on 2/19/12

Value
Quality
Price

My 5 yr old son received a cheap 60mm refractor for Christmas and he seemed to show an interest in looking up at the night skies. I knew that the cheap one he received for Christmas just wouldn't do, so I started looking for a replacement. I did quite a bit of reading and settled on the idea of a dobsonian in the 8" range. I found multiple vendors and brands before eventually deciding on Opticsmart's Apertura AD8.

I ordered the telescope and two days later it arrived at my door... very impressive considering the price for shipping (free). I opened it and assembled it as per the instructions. Simple to follow and it took about 40 minutes from unboxing to complete assembly. Once assembled I realized this was going to make for a much better viewing experience as compared to the cheap scope my son received for Christmas.

As I read over and over, when you get a new telescope mother nature will be sure to provide bad weather; no exception here. I have had it out 3 times now and love the scope. Couldn't figure out the two screws for the focuser, but a quick call to Opticsmart had that worked out. Operator error on my part. So far we have looked a Jupiter and all its moons, Orion's Nebula, Pleaides, and Venus. All looked great and I was very impressed with the stability of the scope. Finder scope works very well once aligned properly, and maintains alignment very well. I plan to modify a garden cart to help facilitate moves from the garage to the front of the house. Not too heavy, but awkward to move.

Overall I would give this scope 5 out of 5 stars and the service at Optics Mart is top notch!!! I know where I am going to buy when it is time for my new stuff!!!

Very Impressed

Review by Julie Tracey | Posted on 2/8/12

Price
Value
Quality

I ordered my scope on the 5th and I just finished assembling it at 615pm on the 8th!!! Outstanding Job opticsmart!! Everything is just as it looks on your website and I couldnt be more satisfied. You guys are Awesome! After comparing other Dobsonians from Orion and Zhumell and others with my Fiance for the last several months we finally chose Opticsmart. It was very easy to assemble and now if the SKIES werent so cloudy I would be out using it. We decided to get the Tweakers Dream Package and the Velvet Lining is Very Impressive indeed and the Guide Knob is very cool too. Cant wait to test it out and I will Update my Review when we do...Thanks again and Job Well Done!!!

Great Telescope for a Beginner or Experienced Astronomer!

Review by Geoff | Posted on 12/20/11

Price
Value
Quality

I purchased the Apertura AD8 Telescope a few weeks ago after spending several weeks looking at similar 'scopes, and I'm glad I bought this one! The telescope is very solidly constructed, especially the aluminum mounts which secure it to the base. Being a Mechanical Engineer myself, I opened up one of the aluminum altitude (up/down) mounts and found that they had quality ball bearings inside; the altitude motion is very smooth on bearings rather than on other scopes where there is friction with the base. The azimuth (turning) motion is also _very_ smooth as it also incorporates roller bearings, which make it easy to move to the position you need and helps greatly when tracking objects. The included finderscope is great, it is really nice to have a right angle finder which makes viewing a pleasure, and it seems to be of very good optical quality too.

The focuser has several adjustments, one for altering the friction when changing focus and another for locking the focus down when you've adjusted it for an object. It has brass compression rings which are good for keeping your eyepieces in place, and allows you to extend them out of the tube a bit if necessary. As I purchased the Tweaker's Dream Package, my optical tube came "flocked" with black velvet (this is put on by Opticsmart), it was very professionally done and extended all the way to the bottom of the tube. This allows greater resolution by damping out light rays that are not running directly to the primary mirror. The Tweaker's Dream Package also included thumb adjustment screws for collimating the secondary mirror, which are very handy since then you don't have to worry about dropping a screwdriver down the tube onto your mirror! Also added were plastic inserts under the adjustment screws, which serve as a kind of bearing to make it easier to slide the secondary mirror around when collimating. Finally the package gives you a handle to move the telescope around to objects (so you don't have to touch the optical tube on a cold night), and finally a second eyepiece storage tray which attaches to the base (allows you to store an extra three 2" and extra two 1.25" eyepieces).

The quality of the primary mirror seems very good, and it came with a white circle sticker pre-stuck at it's center, which made collimating easy. The included laser collimator is quite good, although it is a lot more accurate when you use it with a Barlow lens to collimate the primary (google "barlowed laser collimation"). You MUST collimate (align) any Newtonian telescope such as this properly to get the optimum performance out of it! This is a skill which takes a little time to learn, but there are clear instructions in the included manual.

Overall, this is a great telescope, and unlike many similar ones, comes with an optional extras package (the Tweaker's Dream) which I highly recommend, as well as a clearly printed color manual! I am a very frugal person and I have found this telescope to be of great value. I have so far been able to see M31 (the Andromeda Galaxy) in detail, the Great Nebula in Orion, a transit (shadow) of one of Jupiter's moon's on the planet, the cloud bands and Great Red Spot on Jupiter (with the 9mm and a 2x barlow), the list goes on.

My experience with Rex has been top notch, he is a great guy who stands up for his customers and communicates every step of the way. I had a minor issue with a pair of Celestron binoculars I purchased along with the scope (Celestron's fault Not Opticsmart's), and he was helpful with exchanging them every step of the way and made the process very smooth. He is a business owner who is willing to go the extra mile for his customers!

I can recommend the Apertura 2X Barlow lens as a great first accessory for this telescope, it will give you effectively another 2 eyepieces because it doubles the magnification of the two that are included.

My experience level is I have spent about a year looking at the night sky through binoculars, and this is my first telescope purchase.

Happy Observing!

Enjoying our first telescope

Review by Joe | Posted on 12/18/11

Quality
Price
Value

I ordered the AD8 for our family to enjoy. We are doing exactly that. Our order included a 2x Barlow, a Telrad, and the "tweekers" package. All pieces arrived on time and in good packing condition. I was able to follow the included instructions and had the dob assembled in just over an hour. As a complete newbie, I was glad to see this was not difficult at all. I used the laser collimator to align the mirrors. This was fairly straight forward since the secondary mirror arrived in correct alignment. We have used the scope a couple of times and are thoroughly enjoying gazing at stars from our back yard. Thank you, David Giles, for your quick response to emails and helpful approach to our transaction.

Professional

Review by John Kramer | Posted on 10/20/11

Price
Value
Quality

DISCLAIMER: OpticsMart announced themselves as a new astronomical telescope and accessory vendor through contacting me via email, as they heard of my radio show on BlogTalkRadio. I offered them the opportunity to give them an unbiased review of their Apertura AD12, which they graciously accepted. This scope is a loaner from OpticsMart for the specific purpose of this review, and I by no means have any professional association with OpticsMart.

They say good things come in small packages, but for the Apertura AD12, small doesn't apply. You just gotta love large dobsonian telescopes; no other scope permits you the simplicity, affordability and light gathering capability as a dob. It's all about what's at the eyepiece with these scopes, and that's exactly where they deliver; a fantastic visual observing experience for those of us that long for those faint fuzzies. Thus, when the opportunity presented itself evaluate a new line of scopes exclusively offered by OpticsMart, I jumped, and jumped into the deep end so to speak, asking for and receiving no other then their top-of-the line, large dobsonian, the Apertura AD12 with the "Tweaker's Dream Package".

Please find the rest of this review at http://www.attheeyepiece.com/2011/10/apertura-ad12-review-great-things-come.html
Or click the link in the Description:Details box under the Owner's Manual link