Just got a Celestron 127EQ &amp; have heard that a barlow can be "too good" and needs to be properly matched...would the 3X or this 5X be better?
1551307
Hi, a barlow 3x is a very good acquisition. For both stunning moon's surface details or planetary observations (Saturn will pop up at the size of your pupil, what means great observation of rings). You have a 1,000mm focal length telescope. With a 10mm eyepiece, that means 100x power. With a barlow 3x, that means 300x power. Without a motorized mounting, that is the limit for observation (motion due to earth rotation is too fast with such reduced field of view). A barlow 2x will give you very good views of Saturn with more comfortable observation (more time to focus and keep eyes on). On my refractor, which is not neither APO nor ED, barlow 5x gives no resolution, due to chromatic aberration and other effects. So, barlow 5x, which, in your case, means 500x, may be not so good, due to same reason. The image is quite large but both impossible to keep on view field (due to rotation) and nothing more clear than a blurred image, due to lack of resolution in my telescope. I hope this helps.
1634743
I have used it on the C8 and Meade 12, SCTs, and it works great with a 2x barlow on these scopes. I do not have a 3x. As far as the AstroMaster, I think the barlow would be too much power, JMO. I would try it with the zoom alone and see how it resolves at the lower fl range. I've had mixed results with the lower focal lengths on this ep. Of course, the higher seem better. I use this mainly as an indicator of the seeing conditions and the best fl for the object I'm observing. Then I usually change to that dedicated ep that fits the condition. It's hard to get a multipurpose ep to perform as well as a dedicated fixed fl one. However, again it does work pretty well on the higher fl. Hope that helps. WEK. I have used it on the C8 and Meade 12, SCTs, and it works great with a 2x barlow on these scopes. I do not have a 3x. As far as the AstroMaster, I think the barlow would be too much power, JMO. I would try it with the zoom alone and see how it resolves at the lower fl range. I've had mixed results with the lower focal lengths on this ep. Of course, the higher seem better. I use this mainly as an indicator of the seeing conditions and the best fl for the object I'm observing. Then I usually change to that dedicated ep that fits the condition. It's hard to get a multipurpose ep to perform as... » Read More I have used it on the C8 and Meade 12, SCTs, and it works great with a 2x barlow on these scopes. I do not have a 3x. As far as the AstroMaster, I think the barlow would be too much power, JMO. I would try it with the zoom alone and see how it resolves at the lower fl range. I've had mixed results with the lower focal lengths on this ep. Of course, the higher seem better. I use this mainly as an indicator of the seeing conditions and the best fl for the object I'm observing. Then I usually change to that dedicated ep that fits the condition. It's hard to get a multipurpose ep to perform as well as a dedicated fixed fl one. However, again it does work pretty well on the higher fl. Hope that helps. WEK. « Show Less
1270962
There is no magnification with this T-Adapter is good for prime focus....where your camera is receiving light directly from the telescope...the "magnification" will be from the scope itself and no eyepieces...if you want magnification...you need a T adapter that will allow for use with a barlow lens...which is mainly used for planets...as deep sky objects are far too big
1106735
The magnification depends on the eyepiece used. This is a low end telescope, so image quality deteriorates at higher magnification (shorter focal length eyepiece) The maker claims 300X magnification using the supplied 3x Barlow; I find that claim laughable. Keep in mind that, as with any Astronomical Telescope, the image will be inverted (upside down, left to right reversed) unless you use an erecting diagonal.
267994
These filters DO fit, as the 127EQ (I have one myself) has 1.25" eyepeices. The kicker though, is that our eye pieces do NOT have any threads (the eyepieces that come with the set). I've been told by Celestron to hold the filter between my eye and the eyepiece. Sigh.Best thing to fix that...get a different and better eyepiece.
1782227
It appears that the 102 utilizes 1.25" eyepieces. If that is the case, then the Barlow lens should work well.
1865214
Yes. I have the 4.5 StarBlast and it is a great beginning scope. Add some filters and 2.5x Barlow and it's even better.
1645077
Yes. It will. A standard length 1.25" Barlow would work just fine with this telescope as well.
482994
It is always better to keep the filter to the closest point from your eye. In this case, immediately below the eyepiece. Combining multiple filters may be useful to watch bright phases of moon and venus. For order sake, i would say Barlow, Filter, Eyepiece and Your Eye in order. The filters have thread which can help u screw and pile up. So Enjoy!!
790389
A barlow provides 2x or 3x the magnification of your regular eyepieces. This lens is adjustable between 8mm and 24mm simply by turning the piece. In essence, this eyepiece could replace your regular eyepiece. Before I purchased this zoom lens, I had 2 separate eyepieces of 9mm and 25mm. I no longer use those and just use this adjustable zoom lens. I still use my separate Barlow lens which enhances this zoom lens by 3x. Hope this helps!
2200535
I've never seen two barlows used at the same time but don't let that deter you. This is an awesome barlow to use with large aperture scopes. I use it on my Orion Xt10 Classic Dobsonian with a 25mm lens. I use it with viewing Jupiter, Saturn, Mars, and all the other planets. With where I am (near a city) I lose some clarity with it but its magnification is unrivaled in my opinion.
139521
Michael, I purchased the Orion 8715 5x high power Barlow lens for $169 and got a fine crisp image from it .I also liked the heft of it and the cool inner brass ring. Only thing is, a $39 3x. Barlow is not only just as good, but allows me to utilize a wider range of my eyepieces. Lemme put it to you this way...the overkill factor on the 5x Barlow is insane, to say the least.
2121602
Check this link out http://www.astronomyforum.net/celestron-nexstar-telescope-forum/134708-nexstar-slt-127-vs-5se-6se.html
1454109
Hey Iggy,Since I wrote, I did end up with the 8" Dobsonian Intelliscope. The answer is, the Orion scope is nicely balanced and with a little practice, you can get good at tracking objects by hand. With a 10mm eyepiece and 2X Barlow, which is a magnification of 240x on the 1200mm scope, you need to move the scope about every 20 seconds or so. You still need a motor driven mount if you plan on taking photographs, though.
1565297
Some good eyepieces, not with too small focal length (no less than 10mm) and a Barlow lens. The ultima duo eyepieces are quite good.
801416
The 70 Travel Scope can handle a "Shorty Barlow" from the top of the diagonal. The Scope is 70 mm, so It's Magnification Max is 140 power. Your 20 delivers 22.5 Magnification, the 10 mm 45. The Scopes power is the ability to not surpass 2 X the MM appeture (front Lens Diameter) so 70 X 2 +140. A Two times barlow would double your current numbers; a triplet would get you 135 Power with your 10 mm. That's 5 mm under the scope capacity so as not to darken the Picture. This Scope is great BTW, we used It to film the Venus Transit across the Sun and other Dark Sky Objects, great for Landscape photography as well (on a budget :) Though make sure It's a "Shorty" Barlow Lens, some are too long to go into the "top" of the diagonal (you need the Diagonal because It's part of the 450 mm Focal lenght ) from the "tube side" you won't be able to focus. Celestrons shortys work well as Meades. Hope this helps.
1919975
The 52303 Regal Refractor has a focal plane that is very deep in the scope. Therefore, you have to use an eye piece that has a deep set focal plane. Celestron has specific eye pieces for that scope to match it. In other words, the typical 1.25 inch telescope eye piece will not work with it. So, I suspect, the typical barlow lense or magnifier may not either. You can email or call Celestron, or talk to one of the bigger astronomical telescope retailers to find out for sure though.