Just got a Celestron 127EQ & have heard that a barlow can be "too good" and needs to be properly matched...would a 3X or 5X be better?
1469253
You need to find the aperture of your scope. The typical maximum magnification of any scope is 50-60x this number. So if your aperture is 2.4", then the maximum magnification is somewhere between 120x-142x. For example, a 20 mm eyepiece used on a 1000 mm focal-length telescope would yield a power of 50x (1000/20 = 50) and a 10 mm eyepiece used on the same instrument would yield a power of 100x (1000/10 = 100).
821883
Mine works just fine. I don't understand "too good". The mirror is what matters. The telescope has a great mirror for the price. 3X is what I have. I like the zoom lens best. It is the easiest to work with.
1469254
I use the 3 and higher for imaging Planets, thet 2X can be used for doubling the power at the eyepiece. The 127 eq is a great scope you should have lots of fun. I had a C5 at one time loved it.
1469255
A 3 or 5x might be a bit much for that scope. A smaller 1.5 or 2x would be a better fit. All a Barlow does is increase your magnification. A 2x would double the magnification of whatever eye piece you use. Rule of thumb for maximum useable mag is 50 times the aperture. The aperture of the 127 is 5 inches. So the highest useable mag would be around 250x and that would be with perfect viewing conditions.
638342
It could be you need an extention for eyepiece or your eye isn't cloce enough to eyepiece,or you are useing an eyepiece that has too short of a focal length. Try a 32mm or 36mm. If that works, work down in focal length. I tried a 6mm and saw a blure. Every telescope has a max magnification. The 8" with a 1200mm focal length maxes out at 450/460 power. With 5x barlow max 15mm yields 400x and 13mm yields 461x.
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!!
1208106
I have not used my Powerseeker 127MM EQ Newtonian Reflector for this purpose, so I cannot give an answer to this question. In my opinion I would use the 20 MM erect eyepiece with the 3 X barlow to give 150 X. I would not use the 4 MM eyepiece with the 3 X barlow ( 750 X ) because the image of the mountain will be upside down.
983708
This Should work fine. I know I have heard that the Barlow might not have enough travel to focus with some scopes. This can be fixed by placing the 2x Barlow directly into the focuser and then attaching the diagonal to the barlow. This small kit is a great value&lt; id say buy it. I have it and im happy with everything in it except the moon filter. The moon filter is plastic and it turns the moon green but it still works. The other filters are high quality and individually they cost $19.99. The 6mm Eyepiece is great and will be plenty powerful. to bring out planetary detail
1971496
That is a pretty vague query. I would consult your options page in your particular manual. But that said, I purchased this model for my Advanced VX since it was on the recommended list and regret it. Its current draw when slewing may exceed its output, possibly damaging my mount. I would highly suggest the 5 amp adapter (product #18780) for any Celestron computerized telescope. The safest rule of thumb is to always have a power supply that exceeds your demand in terms of amp output. It costs more, but to repair a damaged mount due to an inadequate power supply would be far greater.
1461166
I would agree with teotwawki, i have a celestron 127 powerseeker and it is almost too big for it but plenty of room for accessories
2026022
It's really not critical to have a Barlow lens but it's nice. When I first got my telescope, I just used the lens take came with it. Later on, I purchased a Barlow lens and some filters. With these items, I was able to see better details. Now I wish I had a bigger telescope. I guess just like any other hobby it depends on how much can you afford to spend. You might want to try to hook up with a astronomy group some night and see for yourself before you decide.
725116
I do not know if it is "shorty or not" but the barlow is in the kit and it is 2x working as intended to work...good quality . If your scope is similar to Celestron scope C-90 it will fit and work perfectly well...eye pieces 1.25" it comes with three filters etc..it is a good buy! it will fit any 1.25" eye piece telescope or scope. come in a very sturdy case lined with foam.
1540708
Yes, you can see the Moon with the 09881 Observer 70 refractor! It comes with two eyepieces giving you 28x, 70x. You may want more magnification so we suggest getting the Orion 2x Shorty Barlow. It goes where you usually put the eyepiece and then the eyepiece goes in the back of the Barlow tem # 08711. If the Moon is too bright for comfort you might consider our 25% Moon filter that will screw into the silver end of either eyepiece Item # 05598. All the best!
1133374
Hard to answer that question without having my telescope setup. I have both this barlow and the longer one, and I can't remember which one I used. I do remember that at one point in time I could not only see at least 5 of Jupiter's moons at one time, but I could also see spaces between Saturn's rings if that's what you're asking. I have an Orion 8Xti telescope. That particular night had to have been an all time great for me. The skies were fantastic for viewing that night.
1324203
Try the ocular first and if you need more power then add the barlow. Personally I do not like barlow lens and you will have around 155X with the 8mm. That is a nice power for the C-5. Generally my oculars cost around $350+ each and are a single mm because the lower priced oculars degrade the optics far to much for me. The C-5 is a fine instrument but most cripple it with poor quality oculars.My C-5 can handle a 4mm ocular beyond that the quality is lower than I generally want and remember it is only a 5 inch instrument. If you want more power then get an 8 inch interment.
179363
If you don't exceed the magnification appropriate to the sky conditions, yes.Barlow and any good eyepiece from 32 down to 6 mm should be usable IF sky clear and steady. A Barlow plus 6 mm will result in magnification of 400 times in the XT8. That is the most power I could use and only on really bright objects. The Barlow is more useful to me with double- digit eyepieces, boosting the power of a 10,for instance, while keeping the bigger easier to see glass.A barlowed 10 gives 240x in a 1200mm long scope like the XT8.I sold my XT8 to buy a bigger scope but the XT8 is an excellent one. If you don't exceed the magnification appropriate to the sky conditions, yes.Barlow and any good eyepiece from 32 down to 6 mm should be usable IF sky clear and steady. A Barlow plus 6 mm will result in magnification of 400 times in the XT8. That is the most power I could use and only on really bright objects. The Barlow is more useful to me with double- digit eyepieces, boosting the power of a 10,for instance, while keeping the bigger easier to see glass.A barlowed 10 gives 240x in a 1200mm long scope like the XT8.I sold my XT8 to buy a bigger scope but the... » Read More If you don't exceed the magnification appropriate to the sky conditions, yes.Barlow and any good eyepiece from 32 down to 6 mm should be usable IF sky clear and steady. A Barlow plus 6 mm will result in magnification of 400 times in the XT8. That is the most power I could use and only on really bright objects. The Barlow is more useful to me with double- digit eyepieces, boosting the power of a 10,for instance, while keeping the bigger easier to see glass.A barlowed 10 gives 240x in a 1200mm long scope like the XT8.I sold my XT8 to buy a bigger scope but the XT8 is an excellent one. « Show Less
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.
1782227
It appears that the 102 utilizes 1.25" eyepieces. If that is the case, then the Barlow lens should work well.
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.
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.