- Premium 2" Dual Speed Low Profile Crayford Focuser for Newtonian/Dobsonian reflector telescopes (model FOC2CLP)
- Made by Long Perng (same product as Orion focuser), a leading manufacturer of premium telescopes and accessories
- 11:1 fine focus control for backlash free and image-shift free focusing
- Includes integral 2" extension tube for additional back-focus travel if required
- Features drawtube tension adjustment and focus lock screws
- Includes 1.25" eyepiece adapter
- Will fit 8" or larger tubes, as well as flat tube surfaces. Drop-in replacement for many Orion Newtonian and Dobsonian telescopes, including Intelliscope dobs (will not work with SkyQuest XT8 Classic Orion dob sold before 2007 unless you drill new holes, or some models of the XT10i). Please use the information below and in the photos to confirm whether this focuser will work with your telescope.
All measurements below are measured from the bottom end of the flat base plate. There will be an additional gap of 1-2mm between this base plate and the telescope tube which will depend on the diameter of your telescope tube.
For use with 2 eyepieces and accessories (without 1.25 adapter):
- Focuser travel range: Minimum Height = 1.89 (47.9mm) and Maximum Height = 4.54 (115.3mm)
- Minimum focuser height (with 2 extension tube collapsed) = 1.89" (47.9mm)
- Maximum focuser height (with 2 extension tube collapsed) = 2.85" (72.5mm)
- Minimum focuser height (with 2 extension tube fully extended) = 3.62" (92.0mm)
- Maximum focuser height (with 2 extension tube extended) = 4.54" (115.3mm)
For use with 1.25 eyepieces and accessories (with 1.25 adapter):
- Focuser travel range: Minimum Height = 1.98 (50.2mm) and Maximum Height = 4.63 (117.6mm)
- 1.25" low profile adapter only adds 2.3mm to the above 2" measurements
- Focuser includes a 1.25 collet that can be used for added extension. This can add up to 0.85 (21.7mm) to all the above 2 heights. However, it can skew the optical axis significantly and is not recommended for frequent or imaging use.
For use with any 1.25" or 2" eyepieces and accessories:
- Drawtube travel is 24.5mm (almost 1")
- Integral drawtube extension can be used to add 44mm (1.7") of additional back-focus travel, so total tube travel is 68mm (2.7")
- Mounting hole pattern is 54mm (2.125") along optical axis and 90mm (3.56") perpendicular to optical axis
- Focuser weight (without 1.25" adapter) = 1lb-10.8oz (760gm)
- Focuser weight (with 1.25" adapter) = 1lb-12.3oz (802gm)
- Focus knob diameter = 1.49" (38mm)
- Microfocus knob diameter = 1.10 (27.8mm)
- Maximum outer barrel diameter = 3.31" (84.0mm)
- Millimeter markings on focuser drawtube: No
- Rotatable: No
- Dust plug: One 1.25" dust plug included
Manufacturer part number: FOC2CLP (formerly known as FOC2CNML)
Jul 21, 2017
Low profile focuserPros: Cons: Comments:
Very well made. What I am most pleased about is Agena's quick service! Price was tens of dollars less than Orion's for the same focuser. I'll be a future customer.
This review was provided courtesy of AgenaAstro.comJun 19, 2017
Antares 2'' Low Profile Crayford Focuser for ReflectorsPros: Cons: Comments:
Very good product, solid and robust! Unfortunatelly I didnt pay attention to the chart with measurements and size. When I tried to install in my SW 200mm F5 it did´nt work. However I am storing it for future reflector building by myself.
This review was provided courtesy of AgenaAstro.comJul 22, 2015
Very good build and easy to usePros:
Accurate,Compact,Easy to UseCons: Comments:
I bought this focuser to replace the simple focuser on my Orion XT10 reflector, actually I have to drill holes to install the new focuser. It's very easy to use and has a built-in adjust tube so you could first adjust it if you could not reach to the focus plain.
This review was provided courtesy of AgenaAstro.comDec 6, 2013
Focusing is a snap. Great product.Pros:
Accurate,Strong Construction,Easy to UseCons: Comments:
I use this product on my Dobsonian. It makes focusing easy and accurate. It glides into focus and is a joy to use.
This review was provided courtesy of AgenaAstro.comSep 27, 2013
Great Focuser for Astro-ImagingPros:
Accurate,Easy to Use,Strong ConstructionCons:
The dual speed focuser action makes precise focusing easy. My sharpest astrophotos were made using this focuser. I highly recommend it.
This review was provided courtesy of AgenaAstro.comJul 3, 2012
Reasonably priced, good-performing focusPros:
Easy to Use,Strong Construction,Built-in extension tubeCons:
I upgraded the standard crayford focuser on my dob with this and am very pleased with its performance. The focuser has a very sturdy, high quality look to it. The built-in extension tube is a fantastic feature: no need to fiddle with using an extension tube should you require more back focus (and because it's low-profile, front-focus isn't an issue). Using the micro-focus knob is pure joy. A very good focuser overall.
A few things to note:
-The mounting holes are angled, which is great when installing directly onto a tube, but a little trickier when installing onto a flat mounting plate (still possible, however).
-I feel that the primary focus knob tension is a little too high i.e. it takes more force than I would like turn the knob. No such problems with the micro-focus.
-The increased weight of the focuser (compared to my old one) required a slight rebalancing of the scope. Not a significant issue, but worth mentioning.
This review was provided courtesy of AgenaAstro.comNov 5, 2011
Ideal focuser for my 14" deep sky gunPros:
Easy to Use,Strong Construction,AccurateCons: Comments:
The design of my telescope is in process, yet. But I think the installation of the focuser will be very easy. The guiding of its inner tube is amazing. It is very smooth and exact. The focusing range will be enough for my every eyepieces and photo equipments. It is really strong construction, I tried my every large eyepieces (8, 13mm Ethos and 17, 22, 31mm Nagler) in it. I didn't detect any kind of slip. It has very aesthetic looking.
This review was provided courtesy of AgenaAstro.com
Roger S. Kolman New Member
- Skill Level
- Time with Product
Jun 8, 2010
- User Notes:
- Review by vsoer of Glen Ellyn, IL.
Nice upgrade from my helicalPros:
Strong Construction,Accurate,SmoothCons: Comments:
This focuser was an upgrade for me. I had built my own 8 inch f/6.3 reflector, and originally chose a low-profile 2-inch helical focuser. This allowed me to keep the diagonal mirror relatively small, compared to a taller unit.
After several years of use, I have become more and more tired of the excessive turns required to refocus the old unit when changing eyepieces. I chose this focuser as a replacement. I am very pleased with the result.
This unit was about 1/2 inch taller than the original. This required me to move my primary mirror forward the same amount. This was not a problem for me. After installing the new focuser and re-collimating, I am very happy with the result. Motion of the focuser is accurate and smooth. I find the speed of the focus action to be very responsive.
The only downside to this unit is the tilting of the drawtube by the locking screw. This has been mentioned by others, but is not a problem for me. With my eyepieces, and for visual use, I have not needed to lock the drawtube. It supports all my eyepieces well, up to and including the 35mm Panoptic.
Overall, I am very happy with the purchase, and would recommend it for someone with similar requirements.
This review was provided courtesy of AgenaAstro.comMay 20, 2010
Fine product... but one caveat.Pros:
Heavy duty,Accurate,Strong ConstructionCons:
Only Partly AdjustableComments:
I am very pleased overall with this low-profile 2" focuser. The fit and finish are top-notch, and the action is smooth throughout the full range with both the course and fine focusing.
I bought this for my girlfriend's 20" Obsession. On my own 25" I have a FeatherTouch, which costs more than twice as much as this one from Agena. Both of these focusers allow you to loosen the focuser and rotate it on the base, so the knobs can be at an angle, instead of just up-and-down or side-to-side. However, this Agena focuser cannot be rotated to any just any angle because the focusing knobs will actually rub against the base at some points. It does work at a 45-degree angle, and that is fine, but other intermediate angles are not possible. If the knobs were just a little smaller in diameter all would be swell, there would be no interference, and I would encourage the manufacturer to make this slight change, which would give them a really first-class product, almost on a par with the FT. 45 degrees works for me, but it may not work for someone else.
This review was provided courtesy of AgenaAstro.comFeb 7, 2010
This focuser is a bit on the heavy side... but is very nice. I installed it on to a 8" Orion F/4.9 OTA. Took out the standard crayford and had to drill new holes. The original crayford base was a bit wider so it leaves some holes where light can get in.
I just taped those holes and that was it. Mounted it just half an hour.
I was able to reach focus with my MPCC and a Canon Rebel XT(350D).
The fine focus knob is very nice and it helps a LOT reaching that point of very good focus.
This review was provided courtesy of AgenaAstro.comSort by
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