Eyepieces

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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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First post

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

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

24395 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...

Last post

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

35128 Views

Last post by Don Pensack
Fri Dec 29, 2023 3:40 pm
Creating a basic set of eyepieces for your new telescope

Last post by Lady Fraktor « Thu Dec 07, 2023 1:06 pm
Replies: 69
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

Your 11 mm eyepiece will give exit pupil of 1.28 mm, TFOV of 0.625° and a power of 20x per inch of aperture.
Well within the limits of the...
69 Replies

106569 Views

Last post by Lady Fraktor
Thu Dec 07, 2023 1:06 pm
Evolution of Eyepieces by Chris Lord

Last post by j.gardavsky « Sun Aug 15, 2021 3:39 pm
Replies: 19
by notFritzArgelander » Sun Oct 27, 2019 2:36 am

First post

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

Last post

You might like this information, too:

The Erfles, and some other eyepieces are desribed by the Zeiss designers in

DIE FERNROHRE UND...

19 Replies

41160 Views

Last post by j.gardavsky
Sun Aug 15, 2021 3:39 pm
Evolution of Eyepieces .

Last post by messier 111 « Sat Apr 27, 2024 2:36 am
Replies: 13
by messier 111 » Thu Apr 25, 2024 1:31 am

First post

this is what the future eyepiece will look like ,

We cannot stop progress, but progress can stop us.

Last post

Has anyone tried the Revolution R2? I know it is on the low end but it seems to have some potential.

I've never heard of that, what exactly is it?

13 Replies

211 Views

Last post by messier 111
Sat Apr 27, 2024 2:36 am
Astro-Tech EPs

Last post by Mike Q « Tue Apr 23, 2024 12:49 am
Replies: 14
by JayTee » Sat Jun 24, 2023 6:58 pm

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

The eye relief on the 7mm/100 is definitely tight. You have to get your eye right in there to see the whole FOV. Fortunately I am used to short eye...

14 Replies

1527 Views

Last post by Mike Q
Tue Apr 23, 2024 12:49 am
10 inch SCT eyepieces

Last post by Mike Q « Mon Apr 22, 2024 12:38 am
Replies: 3
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

Well we are going to see how well they do when i get it home. Hopefully buy sometime in June i will have a cart made for it so i can easily transport...

3 Replies

106 Views

Last post by Mike Q
Mon Apr 22, 2024 12:38 am
2024 Eyepieces Buyer's Guide

Last post by Don Pensack « Sat Apr 20, 2024 9:27 pm
Replies: 4
by Don Pensack » Wed Apr 17, 2024 11:05 pm

First post

I have just posted the 2024 Eyepieces Buyer's Guide here:

Last post

Wow Don, that is a tremendous reference guide. Thank you for all the work that went into this.

Can I assume that if I see two vendors eye pieces...

4 Replies

266 Views

Last post by Don Pensack
Sat Apr 20, 2024 9:27 pm
Delite selection

Last post by DeanD « Wed Apr 17, 2024 12:44 pm
Replies: 11
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...

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I agree with Gabby. I have the Tele-pod and use it with the TV76. I also have a Tak TSA 102 which I often put on a Stellarvue M2 or a home-made...

11 Replies

396 Views

Last post by DeanD
Wed Apr 17, 2024 12:44 pm
ES 9mm 100 degree

Last post by Mike Q « Thu Apr 11, 2024 11:47 pm
Replies: 15
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

I made the decision to go ahead and buy the AT 7mm 100 degree eyepiece last week. It will get use in the 102 and the 10 inch more then the 16 inch...

15 Replies

875 Views

Last post by Mike Q
Thu Apr 11, 2024 11:47 pm
New Baader Zoom

Last post by Caldwell 14 « Thu Apr 11, 2024 5:03 pm
Replies: 4
by JayTee » Wed Feb 14, 2024 10:09 pm

First post

My Baader Hyperion Zoom Mark IV EP from Birthday money just showed up in today's post and it may actually be clear tonight. YAY.

Baader Zoom.jpg

Last post

Yeah they are a great zoom. I used one for years. Very comfortable, nice views and very convenient.

4 Replies

272 Views

Last post by Caldwell 14
Thu Apr 11, 2024 5:03 pm
I'm looking to buy a zoom .

Last post by messier 111 « Wed Mar 27, 2024 10:01 pm
Replies: 20
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

Zooms can be sharp, but they have very narrow fields of view in general.
The Leica Aspherical and the APM Super Zoom are two exceptions.
The Svbony...
20 Replies

733 Views

Last post by messier 111
Wed Mar 27, 2024 10:01 pm
Eyepiece Ident

Last post by KLA58 « Wed Feb 14, 2024 1:36 pm
Replies: 2
by KLA58 » Tue Feb 13, 2024 6:08 pm

First post

Skysafari 6+ has a section to load your specific equipment. While loading mine I discovered that my eyepieces are not listed. Does anyone know why...

Last post

Thanks Lady Fraktor. Appreciate all the help I can get.

A Plossl eyepiece is pretty standard.
4 elements in 2 groups with a 50-52° AFOV. If it...

2 Replies

262 Views

Last post by KLA58
Wed Feb 14, 2024 1:36 pm
result of the Televue survey.

Last post by DeanD « Thu Feb 01, 2024 11:18 am
Replies: 6
by messier 111 » Thu Jan 25, 2024 11:43 pm

First post

result of the Televue survey.

Last post

I don't think they plan to rest on their laurels.
I suspect the purpose of the poll was to get opinions about what customers found valuable so they...

6 Replies

718 Views

Last post by DeanD
Thu Feb 01, 2024 11:18 am
TV eyepiece survey

Last post by Don Pensack « Sun Jan 14, 2024 3:13 pm
Replies: 10
by Nakedgun » Sun Jan 07, 2024 6:01 am

First post

~

Today, I took the nine-question email survey.

All I want them to change is to lose the accursed undercuts.

We'll see.

.

Last post

~

Today, I took the nine-question email survey.

All I want them to change is to lose the accursed undercuts.

We'll see.
.

I would be shocked if...

10 Replies

686 Views

Last post by Don Pensack
Sun Jan 14, 2024 3:13 pm
Orion LHD long eye relief 80°

Last post by Don Pensack « Fri Dec 29, 2023 3:33 pm
Replies: 6
by 25585 » Fri Jun 18, 2021 6:20 pm

First post

Under their own brand name, Orion sells a range of (advertised) 20mm eye relief 80° AFOV eyepieces.
They are 4.5mm, 6mm, 9mm all 1.25 fit, and two 2...

Last post

The modifications I made did not cure the EOFB, so I passed the eyepiece on to someone else.

6 Replies

1887 Views

Last post by Don Pensack
Fri Dec 29, 2023 3:33 pm
Nice sale on Explore Scientific EPs

Last post by Mike Q « Sat Dec 23, 2023 1:10 pm
Replies: 11
by Ylem » Thu Apr 06, 2023 10:37 pm

First post

I received an email from Agena with some good sales, especially on ES EPs, especially the 68°s

Last post

ES has a sale going on right now. I snagged both the 4.5/82 and 11/82, basically it was buy one get one free

11 Replies

2014 Views

Last post by Mike Q
Sat Dec 23, 2023 1:10 pm
Bargain of the year

Last post by DeanD « Sun Nov 26, 2023 5:14 am
Replies: 4
by OzEclipse » Fri Nov 24, 2023 9:53 am

First post

I just bought a Pentax XF 6.5-19mm zoom eyepiece. These prices are in AUD.
these eyepieces that usually retail at Astro shops for AUD400(USD270)....

Last post

I just bought a Pentax XF 6.5-19mm zoom eyepiece. These prices are in AUD.
these eyepieces that usually retail at Astro shops for AUD400(USD270)....

4 Replies

643 Views

Last post by DeanD
Sun Nov 26, 2023 5:14 am
20mm GSO SuperView?

Last post by pakarinen « Thu Nov 09, 2023 2:06 pm
Replies: 5
by pakarinen » Thu Oct 26, 2023 2:32 pm

First post

Thinking about trying one of these to keep plugged in to one of my f5s for fast grab-n-go use when I don't want to take out my EP case. Pretty...

Last post

I love the price on these GSO's and am very happy with the loaner. At f/7 in my AT80ED they performed.

Good to know. I'd be using one with my...

5 Replies

789 Views

Last post by pakarinen
Thu Nov 09, 2023 2:06 pm
Astrotech PF EPs?

Last post by rickclark28 « Sat Nov 04, 2023 5:04 pm
Replies: 2
by pakarinen » Fri Mar 17, 2023 2:09 pm

First post

Anybody have eyes-on experience with Astrotech PF EPs? I thought I might try one as a spare just for grins since they're only $60 or so.

Last post

I have the AT-PF 5.5, 15.5 & 25mm. I got them for $40.00 US from astronomics.com and love them. Not sure how they run in a faster scope but my AT80ED...

2 Replies

955 Views

Last post by rickclark28
Sat Nov 04, 2023 5:04 pm
Masuyama Eyepieces

Last post by Lady Fraktor « Mon Oct 09, 2023 5:36 pm
Replies: 2
by Lady Fraktor » Sat Oct 07, 2023 6:30 pm

First post

Astro Hutech is showing a full line of new Masuyama eyepieces.
No pricing at the moment but hopefully they will update and be in stock soon.

These...

Last post

Some people on a different forum really make what is left of my brain boil...
For whatever reason Astro Hutech has claimed that the MOP on the...

2 Replies

724 Views

Last post by Lady Fraktor
Mon Oct 09, 2023 5:36 pm
First Light for 12 Eyepieces with Limited Comparisons

Last post by StarBru « Tue Oct 03, 2023 2:31 pm
Replies: 3
by StarBru » Mon Oct 02, 2023 9:34 pm

First post

Sunday, September 24, 2023
Where: My backyard in Arizona
Target: Saturn

Telescope: Meade 127mn f/9.3 refractor on a Skywatcher EQ6R-PRO w/WiFi

The...

Last post

A good quick test for any eyepiece is to move the view in front of the object and let it drift into view.
If there is scatter issues or flaring it...

3 Replies

596 Views

Last post by StarBru
Tue Oct 03, 2023 2:31 pm
Zoom EPs with Binoviewer

Last post by Michael131313 « Fri Sep 29, 2023 10:10 pm
Replies: 2
by Michael131313 » Fri Sep 29, 2023 8:18 pm

First post

Hi Everyone,
How well do zoom EPs work with binoviewers?
Thanks Michael

Last post

Thanks a lot Bigzmey.

2 Replies

515 Views

Last post by Michael131313
Fri Sep 29, 2023 10:10 pm
celestron 12mm eyepiece

Last post by newbiemaker09 « Wed Aug 30, 2023 3:44 pm
Replies: 11
by newbiemaker09 » Fri Aug 18, 2023 4:05 pm

First post

i have aquired a celestron 12mm eyepiece model number 93305 from 1988 in a model rocket box i got from a family friend and I'm not sure what to do...

Last post

maybe ill post it on the classifieds and put make offer

11 Replies

1148 Views

Last post by newbiemaker09
Wed Aug 30, 2023 3:44 pm
My new (used) eyepieces are here!

Last post by StarBru « Mon Aug 28, 2023 4:28 am
Replies: 9
by StarBru » Mon Aug 14, 2023 5:22 am

First post

I wanted these Meade HD-60 eyepieces before they were discontinued, saw the whole set up for sale for a decent price and was lucky enough to snatch...

Last post

I finally was able to purchase a Series 4000 Meade 8.8mm UWA eyepiece!

Now, I just need to obtain the 4.7mm UWA to complete the collection. And...

9 Replies

919 Views

Last post by StarBru
Mon Aug 28, 2023 4:28 am

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