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Focusers (Electric and Manual) Archives

Starlight Instruments Motorized Focus Control System for the Feather Touch 3545 Focuser

Feb 19 2010 07:42 AM | Guest in Focusers (Electric and Manual)

My goal was to achieve a finer degree of focus control for imaging than the 3545 was able to provide manually on my TEC 140. The 3545 is superb for visual use. It is much more difficult to come to a tight focus with high magnification and narrow FOV in planetary CCD imaging because

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Author name: Jim McAfee
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JMI EV-1NM Focuser

Dec 29 2009 08:12 AM | detscorn in Focusers (Electric and Manual)

The focuser arrived in great condition and was packed extremely well. The focuser was basically encased in soft foam. I was hoping to just be able to unscrew my old focuser and replace it with this one, but

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Author name: Frank Etscorn
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GSO Crayford Focuser for Reflectors - Dual Speed "Low Profile" with 10:1 Microfocuser

Dec 28 2009 10:06 AM | stargazertony in Focusers (Electric and Manual)

The focuser arrived to me well packed and I was pleased to see it really has a nice feel and finish, better than I had expected. The focuser and

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Author name: Anthony Rogers
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GSO Crayford 10:1 Dual Speed Focuser

Dec 23 2009 09:49 AM | John E.M. in Focusers (Electric and Manual)

I bought a GSO Crayford 10:1 Duel Speed Focuser recently as an upgrade to the stock Rack & Pinion Focuser that came with my Refractor

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Author name: John Mortensen
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SmartAstronomy 10:1 2" Crayford Style Focuser (SCT Style)

Dec 18 2009 08:34 AM | snogeez in Focusers (Electric and Manual)

Upon receipt I was pleasantly surprised. The unit came very well packed, with a shaped foam rubber block that has since been transferred into my accessory box. The unit has

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Author name: Larry Glasheen
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Moonlite Focuser - Work of Art or Functional Instrument?

Dec 18 2009 08:28 AM | Mike Baker in Focusers (Electric and Manual)

By way of introduction I am an amateur astronomer from Van Buren, Arkansas whose interest in astronomy started with a basic astronomy class in the mid-70's while

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Author name: Mike Baker
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Orion 2" Rack and Pinion Focuser

Dec 17 2009 11:42 AM | Zamboni in Focusers (Electric and Manual)

When it comes to finding components for amateur telescope making, some areas of the market are burdened with an embarrassment of riches while others are anemic when it comes to options available to the consumer

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Author name: Tristan Schwartz
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Moonlight CR2 Dual Rate Tri-knob and Universal Install Kit

Dec 11 2009 06:59 AM | Diek in Focusers (Electric and Manual)

I have been using an Orion XT10i for several years now. As much as I love the scope overall, focusing with the stock focuser has always been a pain

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Author name: Derrick Martinez
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GSO Low Profile 2-Speed Focuser with Rigel Systems N-Focus Electronic Focusing

Dec 10 2009 06:13 AM | voliton in Focusers (Electric and Manual)

I have a 10", f 4.7 Newtonian I custom built for astrophotography with the primary mirror pushed forward 2 inches to give more in-focus

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Author name: Gary Ahlers
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JMI EV 1R Focuser

Dec 09 2009 07:32 AM | Guest in Focusers (Electric and Manual)

The optics on my Vixen ED80Sf refractor were sufficient for my wide-field imaging needs, but I soon found that the weight of my Canon 40D DSLR was too much for the stock Crayford focuser

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Author name: Barry Etter
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Starizona Micro Touch Focus System

Dec 08 2009 10:36 AM | Doug Sanqunetti in Focusers (Electric and Manual)

Focusing accurately while taking astrophotographs is one of the most tedious and difficult things to do consistently.  Using a motorized focuser is almost a necessity

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Author name: Doug Sanqunetti
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Wyoroc focuser Review

Mar 22 2006 01:32 PM | Guest in Focusers (Electric and Manual)

I will readily admit to being a novice stargazer

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Author name: Steve Maddox
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Wyoroc Premium 2" Crayford Focuser

Feb 06 2006 02:00 AM | Shadowalker in Focusers (Electric and Manual)

Not long ago I purchased a Hardin 12 inch F5 Dobsonian.

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Author name: Tom Nicolaides
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William Optics 2-Speed Microfocuser

Dec 20 2005 01:52 AM | timmbottoni in Focusers (Electric and Manual)

The quality of a telescope is often first judged by its optics, but other parts of the telescope play an important role in the user's satisfaction with the scope.

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Author name: Timm Bottoni
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Moonlite CR1 with Motorfocus Option

Nov 18 2005 03:25 AM | Fordracer1 in Focusers (Electric and Manual)

I recently purchased a Moonlite CR1 crayford style focuser with the motorfocus option

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Author name: John Moody
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Clement Focuser

Oct 30 2005 02:28 AM | cosmic rays in Focusers (Electric and Manual)

Earlier in 2003 I saw an ad for this promising new focuser. Can it possibly deliver on all fronts? The short answer is .....

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Author name: Joseph Drapell
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Tele Vue Focusmate

Aug 16 2005 03:58 PM | Ron B[ee] in Focusers (Electric and Manual)

Review of the new Tele Vue Focusmate Fine Focus Accessory

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Author name: Ron B[ee]
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Gary Wolanski's Fine Focus Adapter

Mar 27 2005 11:58 AM | CN_Admin in Focusers (Electric and Manual)

Last April, I was intrigued by the comments of friends who have fine focus or dual speed focusers on their scopes, and I began to wonder, what (if anything) I was missing by not having this capability on my refractors (Tv-102 and Pronto). There are several options for replacing a focuser out there, and there are some wonderful units made by the folks at Burgess and JMI. I didn't really want to lay out that much money for something I wasn't sure I really needed, and I have always been pretty happy with the stock TeleVue focuser so I looked around for a different (cheaper) solution.

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Author name: Tom Trusock
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Who Needs a Crayford Focuser for an SCT? Maybe you do… The William Optics SCT Crayford

Mar 12 2005 11:13 AM | rmollise in Focusers (Electric and Manual)

Crayford focusers, those no-gear super-smooth wonders so favored by the Big Dob folks, have finally started to make their presence known in the SCT community. Now, why would a Schmidt Cassegrain owner want a Crayford focuser? SCTs have built-in focusers that focus the telescope by moving the primary mirror. Why the H - E Double Ell would anybody bolt an additional focus unit onto the back of the SCT rear cell?

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Author name: Rod Mollise
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Focus knobs for a Synta Refractor (too drool for!)

Mar 12 2005 11:08 AM | Guest in Focusers (Electric and Manual)

Every so often a "surprise" comes along in the telescope world. Hopefully, the surprise will be a pleasant one. Sometimes, it's not; Like discovering you've ground up the plastic gears on a department store telescope mount two days after buying it. Thankfully, all surprises aren't bad; In fact some produce real joy. Here's an example.

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Author name: Richard Anderson
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JMI NGF-S (Auxiliary Crayford type focuser for SCTs)

Mar 12 2005 11:05 AM | Al Canarelli in Focusers (Electric and Manual)

SCT owners are aware of the image shift problem inherent in most of today's crop of Schmidt Cassegrain telescopes. When the telescope is used exclusively for visual observing, the problem is annoying but usually not serious enough for the viewer to seek a solution. However, the first attempt at CCD imaging magnifies the image shift problem and sends the imager scurrying to find a solution.

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Author name: Al Canarelli
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Gary Wolanski's Fine Focus Adapter

Mar 09 2005 03:52 PM | CN_Admin in Focusers (Electric and Manual)

Last April, I was intrigued by the comments of friends who have fine focus or dual speed focusers on their scopes, and I began to wonder, what (if anything) I was missing by not having this capability on my refractors (Tv-102 and Pronto).

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Author name: Tom Trusock
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Burgess Optical Model 200A 2

Mar 09 2005 02:03 PM | Sol Robbins in Focusers (Electric and Manual)

This review is regarding the Burgess 200A focuser I had purchased for my 6" Skywatcher refractor.

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Author name: Sol Robbins
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Borg Oasis Studio 7315 Focuser

Mar 09 2005 01:54 PM | DanielR in Focusers (Electric and Manual)

Dr. Rickey gives his overall impressions of an aftermarket focuser that can be added to many different telescopes.

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Author name: Daniel W. Rickey, Ph.D.
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