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Dual speed focuser for Reflectors?

Celestron equipment reflector accessories
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#1 mrkhagol

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Posted 24 May 2020 - 06:45 PM

Have been searching around the internet for dual speed focuser or any special focuser that would allow fine tune focusing for my Celestron Reflector..

 

So far, I've only found it for SCT, Astrographs and maybe some refractors...but nothing related to Reflectors.

 

Is there not any product out there like that at all? Kind of weird ..that you either have to have SCT or Astrographs to obtain that add on ..just to get some fine tune focusing..

 

Need a little help in knowledge on that if anyone knows any better.

 

Thank you.



#2 Gipht

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Posted 24 May 2020 - 06:54 PM

For a really nice focuser:  https://focuser.com/products.php

 

For a better price:  https://agenaastro.c...dual-speed.html

 

Rather then reflector, searching on Newtonian works.


Edited by Gipht, 24 May 2020 - 06:55 PM.

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#3 Jethro7

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Posted 24 May 2020 - 07:02 PM

Have been searching around the internet for dual speed focuser or any special focuser that would allow fine tune focusing for my Celestron Reflector..

 

So far, I've only found it for SCT, Astrographs and maybe some refractors...but nothing related to Reflectors.

 

Is there not any product out there like that at all? Kind of weird ..that you either have to have SCT or Astrographs to obtain that add on ..just to get some fine tune focusing..

 

Need a little help in knowledge on that if anyone knows any better.

 

Thank you.

Hello, 

I dont know what tipe of relector you have, a Newtonian  I am guessing.

Well there is

 

(Moonlite)  Telescope Assessories  http://www.focuser.com

 

(Feathertouch)   http://www.starlightinstruments.com

 

(GSO, Guan Sheng Optical). http://www.gs-telescope.com

 

These are just a few to choose from. There is a focuser out their for you.

 

HAPPY SKIES AND KEEP LOOKING UP Jethro


Edited by Jethro7, 24 May 2020 - 07:07 PM.

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#4 AstroVPK

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Posted 24 May 2020 - 07:05 PM

Stay far far away from anything where the drawtube has to be extended out and is clamped in place with a thumbscrew e.g. https://www.telescop...user/102075.uts

In practice, the drawtube has lots of sag. Moonlite and Starlite are very good from what I've heard and I'm considering an upgrade to the Starlite.
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#5 TOMDEY

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Posted 24 May 2020 - 07:13 PM

FeatherTouch... lots of us retrofit them to Newtonians. Ryan built this into my F/3.75 New Moon Newtonian. Finesse becomes very important on fast-feed systems. Newtonians need them even more than refractors.    Tom

Attached Thumbnails

  • 18 feathertouch ultralight on 36-incher.jpg

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#6 mrkhagol

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Posted 24 May 2020 - 07:16 PM

For a really nice focuser:  https://focuser.com/products.php

 

For a better price:  https://agenaastro.c...dual-speed.html

 

Rather then reflector, searching on Newtonian works.

 

 

Hello, 

I dont know what tipe of relector you have, a Newtonian  I am guessing.

Well there is

 

(Moonlite)  Telescope Assessories  http://www.focuser.com

 

(Feathertouch)   http://www.starlightinstruments.com

 

(GSO, Guan Sheng Optical). http://www.gs-telescope.com

 

These are just a few to choose from. There is a focuser out their for you.

 

HAPPY SKIES AND KEEP LOOKING UP Jethro

Good to know I was looking in almost the same places as suggested...so at least I was on right track...thank you...

and yes it is newtonian reflector...


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#7 mrkhagol

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Posted 24 May 2020 - 07:19 PM

Stay far far away from anything where the drawtube has to be extended out and is clamped in place with a thumbscrew e.g. https://www.telescop...user/102075.uts

In practice, the drawtube has lots of sag. Moonlite and Starlite are very good from what I've heard and I'm considering an upgrade to the Starlite.

Starlight looks to be of great quality...and pricey too...but worth the investment...



#8 Andy Brown

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Posted 24 May 2020 - 07:19 PM

I use this one with my Omni 150 XLT newt. Works very well and affordable. Ordered from the US and had no issue.

 

https://www.365astro...d-Focusers.html


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#9 Jethro7

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Posted 24 May 2020 - 07:21 PM

Good to know I was looking in almost the same places as suggested...so at least I was on right track...thank you...

and yes it is newtonian reflector...

I personally own both Feathertouches and Moonlites I like them both if you are on a budget that's where the GSO's comes in.

 

HAPPY SKIES AND KEEP LOOKING UP Jethro


Edited by Jethro7, 24 May 2020 - 07:22 PM.


#10 mrkhagol

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Posted 24 May 2020 - 07:22 PM

FeatherTouch... lots of us retrofit them to Newtonians. Ryan built this into my F/3.75 New Moon Newtonian. Finesse becomes very important on fast-feed systems. Newtonians need them even more than refractors.    Tom

A good solution...but requires extra work though...



#11 Jim45157

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Posted 24 May 2020 - 07:26 PM

A good solution...but requires extra work though...

try agena telescope they have a nice one low profile thats very good about 200 dollars 


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#12 mrkhagol

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Posted 24 May 2020 - 07:26 PM

I use this one with my Omni 150 XLT newt. Works very well and affordable. Ordered from the US and had no issue.

 

https://www.365astro...d-Focusers.html

Now this is something... thanks a bunch...smile.gif


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#13 havasman

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Posted 24 May 2020 - 07:28 PM

SCT's, RC's, Newtonians, Classical Cassegrains and many others are reflectors. What kind of scope do you have?

 

You likely have some kind of Newt. Agena Astro and Scopestuff.com offer wide ranges of 2-speed GSO focuser upgrades. See their websites.  Not good enough? Get a Moonlite. Still not good enough? Get a Feathertouch.


Edited by havasman, 24 May 2020 - 07:29 PM.

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#14 Jon Isaacs

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Posted 24 May 2020 - 07:37 PM

My two cents:

 

There are a number of two speed focusers available for Newtonians..  on my Dobs, I have two Feathertouch's, two JMI DX-1s and standard GSO that's around $135 new.  The Feathertouch's are the best, the JMIs very good but the GSO is plenty good enough.

 

It's simple, easy to work on, plenty strong enough to lift 3 plus pounds of Paracorr and 31 mm Nagler and yet still smooth and light enough to dial in a close double at 820x.. 

 

The biggest problem is finding a focuser/adapter to fit your scope. My friend Jack and hi were able to fit a GSO two speed to his 8 inch Celestron AVX. It worked but was not what I'd call optimal.

 

GSO Two Speed on Jack's Newtonian.jpg
 
Orion made a two speed that dropped right in and depending on your scope, you might find a used Skywatcher 2 speed that would drop right in.
 
What scope do you have?
 
Jon

 



#15 mrkhagol

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Posted 24 May 2020 - 07:40 PM

 

My two cents:

 

There are a number of two speed focusers available for Newtonians..  on my Dobs, I have two Feathertouch's, two JMI DX-1s and standard GSO that's around $135 new.  The Feathertouch's are the best, the JMIs very good but the GSO is plenty good enough.

 

It's simple, easy to work on, plenty strong enough to lift 3 plus pounds of Paracorr and 31 mm Nagler and yet still smooth and light enough to dial in a close double at 820x.. 

 

The biggest problem is finding a focuser/adapter to fit your scope. My friend Jack and hi were able to fit a GSO two speed to his 8 inch Celestron AVX. It worked but was not what I'd call optimal.

 

 
 
Orion made a two speed that dropped right in and depending on your scope, you might find a used Skywatcher 2 speed that would drop right in.
 
What scope do you have?
 
Jon

 

I have the same as yours avx 8" newtonian reflector....


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#16 Promentory

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Posted 25 May 2020 - 08:12 AM

Stay far far away from anything where the drawtube has to be extended out and is clamped in place with a thumbscrew e.g. https://www.telescop...user/102075.uts

In practice, the drawtube has lots of sag. Moonlite and Starlite are very good from what I've heard and I'm considering an upgrade to the Starlite.

I actually have an antares like this and I really enjoy using it. There weren't a lot of options in Canada, and I found my antares on astrobuyandsell. I don't think I'd recommend them given other options around a similar price point, but as a last resort they are good. I just bought an ES Firstlight 10", and one of the first things I did was swap out the hex focuser for the antares, I prefer it much more. As far as I can tell, properly tightened it doesn't sag and holds collimation. It has handled an es 24mm 82 and a nagler 17mm t4 with no issues. I bought a used es 17mm 92 used coming, that will be interesting to see if it holds up. 

 

Ultimately, I will be upgrading to a moonlite though :)


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#17 Bean614

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Posted 25 May 2020 - 07:14 PM

I have the same as yours avx 8" newtonian reflector....

Not sure I understand.   Your "Signature" says you have an AVX 8" Reflector, f/10.  Is that REALLY an f/10????

I wasn't aware Celestron sold an f/10 newt/reflector.


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#18 Jon Isaacs

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Posted 25 May 2020 - 07:23 PM

It's an F/5..

 

Jon


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#19 mrkhagol

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Posted 25 May 2020 - 07:40 PM

Not sure I understand.   Your "Signature" says you have an AVX 8" Reflector, f/10.  Is that REALLY an f/10????

I wasn't aware Celestron sold an f/10 newt/reflector.

my mistake...it's f/5 not f/10....

f/10 is my refractor...mixed up numbers...grin.gif 




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