Hi there Mishulya, I have a 14.5" F4.5 Starsplitter that has a 2" focus mechanism, I bought a Meade series 4000 14mm ultra wide angle (1.25"/2"OD) eyepiece, I bought a Explore Scientific 2" barlow that came with an adapter, when I received the barlow I looked at everything pretty close, when I carefully slid the dual use 14mm Meade eyepiece in the 2" barlow and the 1.25" part of the 14mm eyepiece hit the barlow lens itself, it hit the actual glass, I was lucky because I did not just shove it home into the barlow with any force.
What I learned from this is that the Meade 1.25"/2" eyepiece is really just a 1.25" eyepiece with a 2" adapter, real 2" eyepieces will not have an adapter, so basically what I am saying is if it has the 1.25" part and you want to use a 2" barlow use the adapter that came with it, do not shove that 1.25"/2" eyepiece into that 2" barlow hole, I never actually looked thru that combo to see if it would actually work, I mentioned it in my thread and I was told to not remove the 1.25" piece from the Meade eyepiece as it has a lens in it, use the 1.25" adapter that cam with the 2" barlow.
This said I had actually ordered a 1.25" Meade Ultra Wide Angle 6.7mm eyepiece, what a great eyepiece it is, I have that 14mm Meade, and when I put it in the 2" barlow 2X with the adapter I basically have a 7mm eyepiece, but it has a barlow lens, so my telescope needs to be collimated for the use of a barlow lens, plus both them pieces of equipment together weigh a lot, I have to add weights to my telescope to keep it balanced, well I chose to use the 2" to 1.25" adapter and 6.7mm eyepiece every time, I have not used the 14mm Meade/ES barlow since. I have over $500.00 into the two pieces and I have less than a $150.00 into the Meade 6.7mm UWA eyepiece, I have been looking for a 9mm or 10mm Meade UWA eyepiece since.
Now I am a resourceful guy, look at the photos below, I figured out that this 1.25" barlow(2X) I bought 3 or 4 months ago had a removable barlow lens, if I removed it from the barlow housing and put it on my Meade UWA 6.7mm eyepiece it turned it into something close to a 5mm eyepiece(See photo below), and that was just perfect for that day, I had tried the 2" ES 2X barlow and the 6.7mm eyepiece and it was too much magnification, the black section on the eyepiece in the photo belongs on the short barlow housing piece above it.
I have concluded when I want to look at DSOs I will buy a real 2" only eyepiece with a UWA so I can see everything, until then I will likely use the 2" Meade 14mm eyepiece without the barlow, I really didn't need to spend the money on that barlow, but I suspect at some point I will use it, right now I am trying to focus on the planets and get used to my giant to me telescope, learn how to use it and keep it in tip top shape, the more I read of others threads the more I will want to start looking at DSOs when there are no planets to look at and the conditions are not good for planets anyway, I found a hand book about astronomy a couple days ago on a shelf that the guy I bought the house from must of left here, it has sky charts for every month of the year and where everything is, that got me thinking..................
By the way, I am a newbie, I just post a lot.
Edited by Waynosworld, 14 November 2020 - 02:44 AM.