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Eyepieces
Discuss telescope eyepieces.
Topics: 296

296 Topics

3526 Posts

Last post Re: ES 9mm 100 degree
by Mike Q View the latest post
Fri Oct 11, 2024 8:12 pm
Binoculars
Discuss binoculars.
Topics: 143

143 Topics

1516 Posts

Last post Re: 14" Binocular!
by DeanD View the latest post
Wed Aug 14, 2024 5:00 am
General Optics
Discussion of optical systems and their characteristics.
Topics: 36

36 Topics

394 Posts

Last post Re: The Barlow Lens ?
by Bigzmey View the latest post
Mon Aug 26, 2024 8:56 pm

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Creating a basic set of eyepieces for your new telescope

Last post by Mike Q « Sun Sep 15, 2024 7:15 pm
Replies: 76
by Lady Fraktor » Thu May 23, 2019 2:34 am
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First post

One of the most asked questions by beginners, What eyepieces should I get?

There is always a lot of discussion from people on what eyepieces to get...

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There is nothing arbitrary about it. I know that on a normal night 200x is going to be about it. In the 10 inch, thats about a 6mm, in the 16 its a...
76 Replies

115602 Views

Last post by Mike Q
Sun Sep 15, 2024 7:15 pm
Evolution of Eyepieces by Chris Lord

Last post by Graeme1858 « Sat Sep 07, 2024 7:57 am
Replies: 20
by notFritzArgelander » Sun Oct 27, 2019 2:36 am
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First post

I just brought this over from the old place. I suggest we make this sticky?

Brayebrook Observatory EVOLUTION of EYEPIECES

Link to the document pdf

Last post

Link to the pdf in the OP repaired.

Thanks for the document and the heads up Gabrielle.
20 Replies

44325 Views

Last post by Graeme1858
Sat Sep 07, 2024 7:57 am
The 1X / 2X / 3X Magnification Protocol for eyepiece set selection

Last post by Don Pensack « Fri Dec 29, 2023 3:50 pm
Replies: 29
by Don Pensack » Tue May 25, 2021 10:29 pm
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I wrote this a bit over 15 years ago. It still works today to yield a very basic set on which to build:

1X / 2X / 3X Magnification Protocol for...

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I like the magnifications a bit closer together with my 102mm as the magnifications pass 100x. I like 120x/150x/180x/210x as a goal so I can fight...
29 Replies

28321 Views

Last post by Don Pensack
Fri Dec 29, 2023 3:50 pm
A Guide to choosing eyepieces

Last post by Don Pensack « Fri Dec 29, 2023 3:40 pm
Replies: 19
by OleCuss » Sat Apr 27, 2019 4:40 am

First post

There is much controversy over eyepieces and their selection and this will persist for eternity. The reason for this is that each of us has a...

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An excellent common sense article. Math is not my strong point, but even I could follow your analysis. It is very easy to go down rabbit holes after...

19 Replies

38580 Views

Last post by Don Pensack
Fri Dec 29, 2023 3:40 pm
Optics Websites

Last post by Don Pensack « Sun Jul 11, 2021 2:35 pm
Replies: 18
by mikemarotta » Fri Jul 02, 2021 6:00 pm

First post

I found this one:

Amateur Telescope Optics by Vladimir Sasek.

it seems all right and several or many others must be out there.
Any other leads?...

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Enjoy Mr. Suiter book when you get to read it. :)

Star Testing Astronomical Telescopes: A Manual for Evaluation and Adjustment by Harold Richard...

18 Replies

25818 Views

Last post by Don Pensack
Sun Jul 11, 2021 2:35 pm
ES 9mm 100 degree

Last post by Mike Q « Fri Oct 11, 2024 8:12 pm
Replies: 18
by Mike Q » Mon Feb 05, 2024 9:23 pm

First post

Well i have taken the plunge into 100 degree eyepieces. Saturday night i dropped my new ES 9mm 100 degree into the focuser of the 16 inch with a GSO...

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Well i broke down and ordered both the 13mm and 20mm Astro Tech 100 degree eyepieces yesterday from Astronomics. I should have them by early next...

18 Replies

3233 Views

Last post by Mike Q
Fri Oct 11, 2024 8:12 pm
10 inch SCT eyepieces

Last post by Mike Q « Thu Sep 19, 2024 6:51 pm
Replies: 15
by Mike Q » Sun Apr 21, 2024 5:06 pm

First post

So later in May i am being given a Meade 10 inch LX200 F10 SCT. It is an older scope that has had all the electronic replaced. It comes with a 2 inch...

Last post

I observe with eyeglasses on so long ER is a must.

I get it. Lots of folks need that long eye relief

15 Replies

3001 Views

Last post by Mike Q
Thu Sep 19, 2024 6:51 pm
The Barlow Lens ?

Last post by Bigzmey « Mon Aug 26, 2024 8:56 pm
Replies: 41
by Frankskywatcher » Tue Feb 28, 2023 5:52 pm
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First post

I’m posting this in the hopes of getting some insight about Barlow lenses.

I’m just really curious how often they are used,the results, price ranges...

Last post

I will definitely check to see if the floater observation is real but rationally speaking, it can't be.

I find my Barlow convenient because it...
41 Replies

10650 Views

Last post by Bigzmey
Mon Aug 26, 2024 8:56 pm
E 5.5/100

Last post by Mike Q « Sun Aug 18, 2024 8:03 pm

by Mike Q » Sun Aug 18, 2024 8:03 pm

Ok who is running one of these eyepieces in a dob. Lets say 10 inches and up. Asking for a friend, because if i buy another eyepiece my wife will...

0 Replies

747 Views

Last post by Mike Q
Sun Aug 18, 2024 8:03 pm
14" Binocular!

Last post by DeanD « Wed Aug 14, 2024 5:00 am
Replies: 16
by DeanD » Wed Jul 24, 2024 11:35 am

First post

Hi all,
Just to let you know that my 14 binocular telescope is nearing completion after the components have been sitting in my shed for several...

Last post

Congrats on the first light Dean and you have picked the right target for that! How high in power did you manage to go?

I was just using 26mm...

16 Replies

3816 Views

Last post by DeanD
Wed Aug 14, 2024 5:00 am
everything is complete, binoscope and tripod with head.

Last post by Bigzmey « Sun Aug 11, 2024 10:48 pm
Replies: 9
by messier 111 » Sat Aug 10, 2024 12:42 am

First post

everything is complete, binoscope and tripod with head.

I finally received my tripod with the head today.
tripod, Manfrotto 028 b.
Manfrotto 608...

Last post

With ~3mm exit pupil and near max FOV you will likely use 18mm EPs most of the time anyway.

9 Replies

1191 Views

Last post by Bigzmey
Sun Aug 11, 2024 10:48 pm
fresh out of the box .

Last post by messier 111 « Sun Aug 04, 2024 1:54 pm
Replies: 16
by messier 111 » Thu Aug 01, 2024 1:23 am

First post

fresh out of the box ,
APM 82mm sd binos.
all i need is the tripod and its head to have a little fun.
I can't wait to see what satisfaction they can...

Last post

Typically, the binocular scopes are collimated to be good up to ~1 mm exit pupil. For 80mm that would be ~80x.

I think 80 is already very good....

16 Replies

1943 Views

Last post by messier 111
Sun Aug 04, 2024 1:54 pm
Oberwerk 8x56 LWs?

Last post by pakarinen « Sat Aug 03, 2024 2:03 pm
Replies: 8
by pakarinen » Wed Mar 06, 2024 4:20 pm

First post

I have some astro cash in my pocket again, so I'm doing my usual kid in a candy shop routine - Ooooh! I could get that or I could that or I could get...

Last post

I have the Oberwerk 11x70 which have apparently been discontinued. They are somewhat heavy but if I place my hands at the front end I can steady...

8 Replies

2740 Views

Last post by pakarinen
Sat Aug 03, 2024 2:03 pm
Innovative binocular stabilization

Last post by pakarinen « Sat Aug 03, 2024 1:58 pm
Replies: 5
by Nakedgun » Sun Feb 18, 2024 4:44 pm

First post

~

Revealed here:

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Last post

I using a set-up like this with all my binos (well, not my itty-bitty 25s) now. Works quite well for me.

5 Replies

2127 Views

Last post by pakarinen
Sat Aug 03, 2024 1:58 pm
Delite selection

Last post by Caldwell 14 « Tue Jul 30, 2024 7:11 pm
Replies: 12
by Caldwell 14 » Thu Apr 11, 2024 4:10 pm

First post

Hello folks

I own a Tele Vue 102 refractor and and have a small selection of eyepieces and try to keep it that way. My scope is 8.6fl and I...

Last post

Cheers Dean. I went ahead and bought a Nagler zoom at the end of the season, a pre owned number in mint condition. I haven’t tried it yet, but the...

12 Replies

2591 Views

Last post by Caldwell 14
Tue Jul 30, 2024 7:11 pm
I'm looking to buy a zoom .

Last post by Caldwell 14 « Tue Jul 30, 2024 3:15 pm
Replies: 28
by messier 111 » Mon Mar 18, 2024 12:00 am
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hi all ,
I'm looking to buy a zoom lens for my new friend Lunt 80mm Solar MT.
several people tell me about the zoom, Baader Hyperion Universal Zoom...

Last post

Baader Zoom, hands down.
28 Replies

4693 Views

Last post by Caldwell 14
Tue Jul 30, 2024 3:15 pm
New Brandon eyepiece from Vernonscope

Last post by Lady Fraktor « Wed Jul 24, 2024 4:28 am
Replies: 4
by Lady Fraktor » Mon Sep 26, 2022 6:13 pm

First post

I should hopefully have mine in a few weeks :)

Last post

The binoviewer first light happened long ago in 2006 :lol:
I may have some notes tucked away somewhere ;)

4 Replies

2042 Views

Last post by Lady Fraktor
Wed Jul 24, 2024 4:28 am
Evolution of Eyepieces .

Last post by messier 111 « Sun Jul 21, 2024 3:13 pm
Replies: 24
by messier 111 » Thu Apr 25, 2024 1:31 am
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this is what the future eyepiece will look like ,

We cannot stop progress, but progress can stop us.

Last post

Product Updates .
24 Replies

4244 Views

Last post by messier 111
Sun Jul 21, 2024 3:13 pm
New Celestron Skymaster Pro 15x70mm binoculars

Last post by messier 111 « Fri Jul 19, 2024 11:30 pm
Replies: 2
by OzEclipse » Fri Jul 19, 2024 3:09 pm

First post

About 2 months ago, I was observing Comet Pons-Brookes. I compared the view through my beautiful SV BONY 10x42ED binoculars to the view through my...

Last post

enjoy the new binos Joe , thx .

2 Replies

1015 Views

Last post by messier 111
Fri Jul 19, 2024 11:30 pm
mini report of the zooms

Last post by messier 111 « Thu Jul 18, 2024 3:27 pm
Replies: 4
by messier 111 » Wed Jul 17, 2024 10:28 pm

First post

mini report on the zooms.
The following report is very summary.
I tested the Orion 7-21 zooms against the Hyperion clickstop Zoom 8/24 mm Mark IV...

Last post

Good to hear! My experience matches yours. Baader Mark IV was clearly superior to a few less expensive zooms I have tried. Unfortunately, I tried but...

4 Replies

1167 Views

Last post by messier 111
Thu Jul 18, 2024 3:27 pm
interview with Don Pensack.

Last post by DeanD « Mon May 27, 2024 5:16 am
Replies: 4
by messier 111 » Sun May 26, 2024 2:05 pm

First post

interview with Don Pensack .

I found this interview with one of our members, who in my opinion is a leader in eyepieces .
enjoy .

Last post

Thanks for this. Some interesting comments! The only downside was that the interviewer kept interrupting before Don had finished answering the...

4 Replies

1502 Views

Last post by DeanD
Mon May 27, 2024 5:16 am
My binoculars finally arrived

Last post by Lady Fraktor « Thu May 16, 2024 4:50 am
Replies: 11
by Lady Fraktor » Wed May 08, 2024 3:25 am

First post

A thank you to John for his recent review of his new Vortex Optics Diamondback 8x32 binoculars.
After a few Pms I ordered a set and they arrived a...

Last post

These were purchased for use anywhere. Travelling, hiking, cycling, bird watching or a bit of stargazing.
Eventually I will get to replacing my old...

11 Replies

2214 Views

Last post by Lady Fraktor
Thu May 16, 2024 4:50 am
How a lens creates an image

Last post by John Baars « Tue May 14, 2024 9:09 am
Replies: 3
by Nakedgun » Sun Nov 26, 2023 6:41 pm

First post

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And, why aperture matters.

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Last post

Quite revealing!

3 Replies

2564 Views

Last post by John Baars
Tue May 14, 2024 9:09 am
ES 52° eyepiece series

Last post by Don Pensack « Sat May 04, 2024 3:55 pm
Replies: 7
by Nakedgun » Thu May 02, 2024 12:57 am

First post

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Does anyone have experience with this line?

Thank you.

.

Last post

This same question has been asked on CloudyNights.com and StargazersLounge.com recently.
There are a lot of reviews on-line, in threads with a lot of...

7 Replies

1648 Views

Last post by Don Pensack
Sat May 04, 2024 3:55 pm
Eyerelief problem solved with eyecup-flattening on Vortex Diamond

Last post by helicon « Wed Apr 24, 2024 5:31 pm
Replies: 5
by John Baars » Tue Apr 23, 2024 8:09 am

First post

For biking trips here in the country, I like to have a small pair of binoculars around my neck. For enjoying the view every now and then and if...

Last post

Interesting modification and a creative solution to the problem John. Nicely done.

5 Replies

2136 Views

Last post by helicon
Wed Apr 24, 2024 5:31 pm

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