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Baader Q-Turret

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#1 Dan Williams

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Posted 16 March 2013 - 07:33 PM

Hello

I read that the Q-Turret is a hybrid of aluminium and plastic - what does that mean? I have an Owl turret which works pretty well, but it's all plastic. Unfortunately, if I were to get this turret I would need two more eyepieces to fill it....

Thanks,

~ Dan

#2 BillP

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Posted 16 March 2013 - 07:57 PM

It is made of mostly some polymer/plastic. Set screws are metal, and the threaded 1.25" barrel that is on the bottom that goes into the focuser/diagonal is metal also.

#3 Dan Williams

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Posted 16 March 2013 - 08:25 PM


Thanks Bill! Pretty much like the one I have now.

~ Dan

#4 daniel_h

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Posted 17 March 2013 - 03:29 AM

It's very lightweight, my unit feels like almost all plastic, the bottom piece which goes into the focuser seems like a metal/plastic hybrid-a bit like cheap eyepieces which look metal but are in fact plastic.

Don't get me wrong I like mine but I would not be loading it with >250g eyepieces.

Keep in mind alo in my newt I need about 25mm in focus to achieve focus with the ep's in the turret as opposed to ep only

#5 johnnyha

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Posted 17 March 2013 - 12:38 PM

Yes, it requires an inch more infocus, and anything heavier/longer/wider than an ortho/plossl is going to start make you wonder why in the world you bought it. ;)

#6 Agatha

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Posted 17 March 2013 - 02:02 PM

I just purchased and received the Baader turret a few days ago. I have often thought it would be interesting and also fun to compare similar eyepieces or to simply change from one to another quickly. I have looked at the TEC and it seems to be really nice and sturdy. But the $$ sort put a damper on that. And the Van Slyke is out of this world...for me anyway. So when I saw the Baader turret being offered, I decided to try it.

I am going to have fun with this. It's very light and the action of the rotating feature is pretty good. I was concerned that I might lose the target when rotating. But it is not bad. I haven't given it a thorough try out yet because I hate the cold.

I did have to change my diagonal to a shorter one and I decided to also just go ahead and change the 1 1/4 adapter also. Fortunately I have an Everbrite and a low profile adapter. I could reach focus then with the ability to go either direction.

Obviously, this is not intended for big, heavy eyepieces and I did still have to do some re-balancing. I will probably replace the little eyepiece screws with either nylon or brass. And I also must say that with reasonable care, I think this turret can last for a while.

For me, it was worth the relatively low price and I know that I am going to have a good time with it. :grin:

I've attached a few pics of it.

Best, Linda B.

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#7 Agatha

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Posted 17 March 2013 - 02:03 PM

And the bottom of turret

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#8 Agatha

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Posted 17 March 2013 - 02:05 PM

And the turret on my AT80 ED

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#9 BillP

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Posted 17 March 2013 - 10:41 PM

Leave it outside in the cold for half an hour then bring it in the house, then touch the various parts, easy enough to tell which is metal as it will be way colder than the non-metal parts.

#10 BillP

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Posted 17 March 2013 - 10:46 PM

And I also must say that with reasonable care, I think this turret can last for a while.


I agree. Not made like a beast, and its price is reflective of that. Baader wanted this set to be something that was affordable, yet optically very good. So those where the design paradigms.

With care, I expect it to last fairly long if not for the rest of my observing. Parts are fairly thick, the center hinge is a metal screw and nut so nothing to break there, and the click-stop mechanism (the weakest link in this chain), although plastic, is fairly thick and there are two of them for the task so the dual-design IMO makes if fairly robust.

#11 ngc2289

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Posted 17 March 2013 - 11:12 PM

Ordered one of these yesterday.

#12 Agatha

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Posted 18 March 2013 - 01:50 AM

and the click-stop mechanism (the weakest link in this chain), although plastic, is fairly thick and there are two of them for the task so the dual-design IMO makes if fairly robust.


Jim, I agree with that completely. When I first got it in my hands, I was curious as to how the click stop was achieved and saw how when I turned it over. The wavy strips of plastic used as springs to pop in or out of the little cutouts is actually very effective but also a potential source of wear and tear. I think keeping it clean will help to maintain longevity.

At first when I saw this turret become available, I was assuming it came only as a kit with the orthos etc. Maybe it did. I didn't really need any more orthos so I decided not to order. Then, as luck would have it, as I was touring around the Agena website, I found it available as a separate item.
It then became a must have . I found the price extremely reasonable. I am really pleased that this inexpensive alternative is available to try out. Of course with lightweight eyepieces. :)

Mike, I look forward to your impression.

Best, Linda B.

#13 Moonlight Sonata

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Posted 18 March 2013 - 01:52 AM

I started a thread in the reflectors forum a few weeks ago asking about this eyepiece turret, as I am interested in getting it to simply make changing eyepieces quick and effortless so that I can compare views at different mags and spend more time observing rather than messing with gear. My intention would be to use it with wide fov eyepieces (ES82s) which some have cautioned against.

Don't get me wrong I like mine but I would not be loading it with >250g eyepieces.


So what is it about the turret that makes you say that? My EPs are around 250g, with the heaviest one being 312g. Aside from having to use counterweights with my dob, what other problems do heavy eyepieces create?

Obviously, this is not intended for big, heavy eyepieces and I did still have to do some re-balancing.


I can see based on photos that it certainly looks to be made with orthos or other small EPs in mind. Assuming one would be able to physically fit 4 wide field EPs next to each other in the turret, is there any reason to think that it wouldn't function the same?

With care, I expect it to last fairly long if not for the rest of my observing. Parts are fairly thick, the center hinge is a metal screw and nut so nothing to break there, and the click-stop mechanism (the weakest link in this chain), although plastic, is fairly thick and there are two of them for the task so the dual-design IMO makes if fairly robust.


This is something that never crossed my mind. Is the click-stop mechanism something that might be prone to malfunctioning over time if the turret is being used to rotate between fairly heavy eyepieces?

#14 junomike

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Posted 18 March 2013 - 12:53 PM

Leave it outside in the cold for half an hour then bring it in the house, then touch the various parts, easy enough to tell which is metal as it will be way colder than the non-metal parts.



Or for those in warmer climates, put It in the Fridge/Freezer for an hour!

Mike

#15 Sarkikos

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Posted 18 March 2013 - 01:09 PM

I started a thread in the reflectors forum a few weeks ago asking about this eyepiece turret, as I am interested in getting it to simply make changing eyepieces quick and effortless so that I can compare views at different mags and spend more time observing rather than messing with gear. My intention would be to use it with wide fov eyepieces (ES82s) which some have cautioned against.


Did anyone mention that most eyepieces would probably not come to focus in a Newtonian when used in the Q-Turret? You will probably need to put a Barlow or Barlow lens cell on the neck of the turret. This will decrease the effective focal length of the eyepieces and increase the magnification.

In my 10" f/4.8 and 5" f/5 Newts, for instance, only a few long focal length eyepieces can come to focus in the turret without a Barlow or lens cell added to the optical train.

Mike

#16 Moonlight Sonata

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Posted 18 March 2013 - 05:23 PM

Yep, the in-focus issue has been mentioned. I'm not too concerned about that with my scope because I have to rack out the focuser almost all the way to achieve focus anyway. Also, the collimation screws on my primary are tightened most of the way, so I have some room to push my primary up the OTA a little bit to extend the focal point a bit further out if needed.

#17 Sarkikos

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Posted 18 March 2013 - 05:57 PM

The proof is in the pudding. On my 10" f/4.8 Dob, there are some eyepieces for which I don't have enough out-focus. I have to either pull these eyepieces out of the focuser a bit or put them in an extension. And yet I do not have enough inside-focus for most eyepieces on the turret.

Mike

#18 Moonlight Sonata

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Posted 18 March 2013 - 07:12 PM

That's interesting to hear. It sounds like there's more cause for concern with the in-focus issue than I had thought. How much out-focus does the turret add? Is it about an inch?

#19 Sarkikos

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Posted 18 March 2013 - 08:06 PM

The additional out-focus will vary depending on the eyepiece. Visualize it. The entire length of the eyepiece needs to sit completely above the height of the telescope's focuser so that the turret can turn.

Mike

#20 Moonlight Sonata

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Posted 18 March 2013 - 08:52 PM

I was aware of that but never really thought about it much. Visualizing it, I can see that it likely wouldn't work with my ES82s since they have barrels that are pretty long (about 1/4" shorter than the amount of drawtube travel I have). The only way it might work for my scope is if I adjust the collimation screws to push the primary closer to the secondary, but I don't know how much room there is.

If the eyepiece barrels are longer than each turret sleeve, then I guess one could loosen the screw for whichever eyepiece is currently being used so that it could be fully inserted into the turret, regaining some in-focus. This would make it a bit less convenient though and kind of defeat the purpose.

#21 Sarkikos

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Posted 18 March 2013 - 09:30 PM

I wouldn't fiddle with the collimation screws. Also, the four eyepiece holders in the turret are pretty shallow. The shoulder of many eyepieces will probably stick out above the turret.

If the Newt has a low-profile focuser, you might be able to reach focus for a wider range of eyepieces.

But the surest way to get around the lack of inside-focus, is to place the Q-Turret in a Barlow or screw a Barlow lens cell onto the neck of the Q-Turret. That will allow enough inside-focus but it will also increase the magnification.

Mike

#22 dobsoscope

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Posted 03 October 2013 - 09:11 AM

What is actually the advantage of observing using this? I thought it would allow two persons to look through the eyepieces simultaneously... seems not?!

#23 csrlice12

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Posted 03 October 2013 - 09:56 AM

I couldn't get it to come to focus with NLVs or most anything else. This was originally sold with a set of eyepieces optional. I believe they were orthos. So it sets in a shoebox in the closet, maybe I'll pull it back out and try the Meade RG and HDs in it. Any reason this wouldn't work in an f10 refractor as well as the dob?

#24 desertlens

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Posted 03 October 2013 - 10:36 AM

The total path length of the Q-turret is 38mm so you will need that much in-travel from the point where your EPs normally come to focus (at a minimum). Most Dobs will need a low profile focuser to achieve this.

#25 MRNUTTY

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Posted 03 October 2013 - 05:48 PM

It works with my Brandon's just fine :-) wish there was a Quit-turret to fit them all.






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