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Eyepieces
Discuss telescope eyepieces.
Topics: 299

299 Topics

3578 Posts

Last post Re: Electronic Telescope Eyep…
by messier 111 View the latest post
Sat Jan 18, 2025 12:47 am
Binoculars
Discuss binoculars.
Topics: 144

144 Topics

1535 Posts

Last post Re: Antique store find 7x35
by Mike Q View the latest post
Thu Dec 26, 2024 10:35 pm
General Optics
Discussion of optical systems and their characteristics.
Topics: 38

38 Topics

421 Posts

Last post Re: This is no Rolex
by Astro_Achim View the latest post
Tue Jan 14, 2025 9:32 am

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Last post

The 1X / 2X / 3X Magnification Protocol for eyepiece set selection

Last post by Caldwell 14 « Mon Nov 25, 2024 7:30 pm
Replies: 30
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...

Last post

Many thanks Don, an excellent article
30 Replies

31338 Views

Last post by Caldwell 14
Mon Nov 25, 2024 7:30 pm
Creating a basic set of eyepieces for your new telescope

Last post by Caldwell 14 « Thu Nov 21, 2024 7:32 pm
Replies: 77
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...

Last post

Excellent article
77 Replies

122249 Views

Last post by Caldwell 14
Thu Nov 21, 2024 7:32 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

47513 Views

Last post by Graeme1858
Sat Sep 07, 2024 7:57 am
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

41130 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

30220 Views

Last post by Don Pensack
Sun Jul 11, 2021 2:35 pm
Electronic Telescope Eyepiece

Last post by messier 111 « Sat Jan 18, 2025 12:47 am
Replies: 9
by Thefatkitty » Fri Jan 17, 2025 6:28 pm

First post

Got this in my inbox from the good folks at Agena Astro. Little out of my budget at the moment, but it does look interesting:

Pegasus Astro...

Last post

I remember making a thread about this.
I can't wait to see the results and reviews.

9 Replies

467 Views

Last post by messier 111
Sat Jan 18, 2025 12:47 am
This is no Rolex

Last post by Astro_Achim « Tue Jan 14, 2025 9:32 am
Replies: 8
by Astro_Achim » Mon Nov 04, 2024 2:39 pm

First post

I was really surprised about the parcel that arrived from china today.
I did not remember buying an expensive watch

20241104_152934.jpg

But,...

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It seams that we have a very long full cloud cover phase here in Germany. I am still waiting for the lucky time when I am at home and at the same...

8 Replies

2816 Views

Last post by Astro_Achim
Tue Jan 14, 2025 9:32 am
Filters

Last post by Caldwell 14 « Fri Jan 03, 2025 3:05 pm
Replies: 16
by Caldwell 14 » Sat Dec 07, 2024 9:41 pm

First post

Not sure if I am in the right place or not to post this or not, so apologies to our mods in advance.

Filters, do you use them and if so which ones...

Last post

So I had a go with the Baader Contrast Boaster with Saturn, Mars and Jupiter last night. The filter definitely helped bring out details that I would...

16 Replies

2628 Views

Last post by Caldwell 14
Fri Jan 03, 2025 3:05 pm
How a lens creates an image

Last post by Caldwell 14 « Sat Dec 28, 2024 2:55 pm
Replies: 4
by Nakedgun » Sun Nov 26, 2023 6:41 pm

First post

~

And, why aperture matters.

:

:

.

Last post

Really interesting

4 Replies

3644 Views

Last post by Caldwell 14
Sat Dec 28, 2024 2:55 pm
Antique store find 7x35

Last post by Mike Q « Thu Dec 26, 2024 10:35 pm
Replies: 17
by Ylem » Thu Oct 31, 2024 1:08 am

First post

Today while browsing a local antique store in Point Pleasant, NJ I found a pair of Sears 7x35 in amazing condition.
Beautiful case, with original...

Last post

Ou guys that walk into antique/thrift stores and find quailty optics.... i hate you all lol. I never find anything good in those places.

I have...

17 Replies

5041 Views

Last post by Mike Q
Thu Dec 26, 2024 10:35 pm
Astro-Tech EPs

Last post by Mike Q « Tue Dec 17, 2024 11:32 am
Replies: 23
by JayTee » Sat Jun 24, 2023 6:58 pm
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First post

Has anyone tried any of the UWA EPs from Astro-Tech? I just stumbled across them today and became curious about their performance.

They can be found...

Last post

Many thanks

You are welcome
23 Replies

8796 Views

Last post by Mike Q
Tue Dec 17, 2024 11:32 am
interview with Don Pensack.

Last post by Ylem « Wed Dec 11, 2024 6:56 pm
Replies: 6
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 sharing :)

(Can't believe i missed this post from May lol)

6 Replies

2710 Views

Last post by Ylem
Wed Dec 11, 2024 6:56 pm
24 mm Panoptic or 18.2mm Delite

Last post by Mike Q « Mon Dec 09, 2024 1:50 am
Replies: 23
by Caldwell 14 » Fri Nov 22, 2024 1:14 pm
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First post

So from my signature would you:

a) sell the 32 mm and buy a 24 mm panoptic

b) buy a 18.2mm Delite to fill the slight gap

c) leave well alone, it’s...

Last post

If it was me, i would go for both. I like flexiblity and I tend to like a 5mm or spacing in lower power eyepieces. Like in my dobs it goes 7, 9, 13,...
23 Replies

3024 Views

Last post by Mike Q
Mon Dec 09, 2024 1:50 am
Eyepieces with built in coma corrector

Last post by Mike Q « Sun Dec 08, 2024 1:06 pm
Replies: 3
by Mike Q » Sat Dec 07, 2024 1:14 pm

First post

These could be game changing.

Last post

Here is the initial post from only 4 months ago. I thought it was longer, but i guess not

3 Replies

788 Views

Last post by Mike Q
Sun Dec 08, 2024 1:06 pm
Delite selection

Last post by Caldwell 14 « Wed Oct 30, 2024 7:14 pm
Replies: 13
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

So in the end it turns out that the 3-6 Nagler zoom is rather wonderful, I am really very pleased. You can see the final set in my signature below...

13 Replies

4491 Views

Last post by Caldwell 14
Wed Oct 30, 2024 7:14 pm
Binoculars used for anything

Last post by Nakedgun « Sun Oct 20, 2024 7:00 pm
Replies: 16
by Nakedgun » Wed Apr 19, 2023 7:57 pm

First post

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We have a category for most used astro binos, so what about any others you have and use for general observing, or even astronomy, though they may...

Last post

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Tasco No. 116 in brown livery; I had to have them for that reason alone. In very good condition, and optically excellent.

Online auctions are...

16 Replies

5939 Views

Last post by Nakedgun
Sun Oct 20, 2024 7:00 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...

Last post

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

5217 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

4796 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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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

16375 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

1630 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

5640 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

2531 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

3807 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

4049 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

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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

3413 Views

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

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