Celestron's 2" Luminos Barlow inserts between the eyepiece and a 2" eyepiece holder on the telescope and increases the magnification by 2.5x. It can be used with 1.25" eyepiece and 2" eyepieces. The 4-element fully multicoated lens assembly offers superb field flatness and minimal chromatic aberration.
Threaded to accept standard 2" (M48x0.75) astronomy filters. Includes one dust plug and one end cap. 2" nosepiece barrel features safety recess groove.
Product carries full 2 year Celestron factory limited warranty (within US/Canada only).
- Weight (with 1.25" adapter) = 10.2oz
- Weight (without 1.25" adapter) = 7.3oz
- Height (with 1.25" adapter) = 3.64" (92.4mm)
- Height (without 1.25" adapter) = 3.18" (80.7mm)
- Clear aperture = 1.18" (30.0mm)
Oct 10, 2018
2" 2.5X BARLOW BY CELESTRONPros: Cons: Comments:
It seems to give nice images, especially when used with a good eyepiece. I also like how short and light it is, and a good tool for astrophotography.
This review was provided courtesy of AgenaAstro.comMar 31, 2017
Celestron Luminos BarlowPros: Cons: Comments:
This is an excellent Barlow--sharp, relatively light for its size (2") and solidly made. It does a great job of multiplying the power of a 26mm ES eyepiece without decreasing the 60 degree field of view. It may have increased the eye relief a little on a 10mm Plossel, too. The sale price made it a bargain!
This review was provided courtesy of AgenaAstro.com
- Skill Level
- Time with Product
Jul 24, 2015
- User Notes:
- Review by Jeremiah2229 of Illinois.
Quality Lenses,Strong Construction,Easy to Use,AccurateCons: Comments:
I purchased this with the Baader 8-24 Zoom III. When the Barlow arrived I was pleasantly surprised to find that it is indeed an APO Barlow. Wasn't expecting this since the discription omits it and assumed it would just be an Achromat. I wanted this and the Baader Zoom specifically to use together. It is a really nice combination and I prefer the 2.5x over a standard 2.0x. So far I have used this combo with an ES AR127 and XT8. Planetary observing is a real treat with these two pieces. I cannot speak of anything else since I am just currently observing planets. With the AR127 and the Baader on 8mm in the Barlow results in 258x. This gives excellent view of planets and there is room for more power though the AR127 should max at 250x. CA is absent to very, very little. With the XT8 and 8mm the magnification is 375x with the max for the scope at 400x. At 375x there is little room for more power and the observing is excellent. I can literally set for hours while observing planets and seems like there is always a treat just waiting for me. I have only used this Barlow and the Baader in 2" setup, have not tried 1.25". I do have a 2" 32mm SWA Agena EP that I use with this Barlow and they mate just perfect also. Very nice for cluster and galaxy viewing. Hope to get the Agena 2" 38mm SWA EP soon too. Though this Barlow is large I have had no trouble with balancing issues in the above scopes. If there is one problem it would be that I simply do not have enough EP's to use in this Barlow. ;-)
This review was provided courtesy of AgenaAstro.comSep 6, 2014
Best bang for the buckPros:
Accurate,Strong Construction,Quality LensesCons:
25x Makes Math Complex,Power Makes Math ComplexComments:
After a few months and various tests on various setups, I can conclude that it's virtually optically flawless.
Used on a 102mm refractor, 90mm APO, 10" and 16" newtonians, C11 SC and 6" Ritchey-Chretien, we were unable to see any optical default.
Used with the 8-24mm Baader hyperion zoom eyepiece, we even concluded that the image is better with this Barlow than without it when pushing to the limits with tricky double-stars.
Silver-blue body is quite perfect, really practical to work in the night, and not prone to much dew. Black astro-equipment is a total nonsense as you don't see it much, and just pick up any humidity.
Bronze ring is not so perfect, and sometimes won't allow your eyepiece or T2 adapter to get out at the first try. It could also benefit from a second thumbscrew, this is easily done with a tap and die set.
The only bad thing about this barlow is how the uncommon 2.5x factor makes the math tricky, especially around 4am. For example easy things like calculating a 4mm eyepiece on a 1200mm newtonian come to a "300 x 2.5" answer.
This review was provided courtesy of AgenaAstro.comSort by