Reflector Telescopes

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John Dobson / building telescopes

Last post by Makuser « Wed Mar 22, 2023 12:25 pm
Replies: 3
by Frankskywatcher » Wed Mar 22, 2023 2:15 am

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John Dobson a man so far ahead of his time.

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Hi Frank. John Dobson was a master craftsman and his concept of a rocker box at the bottom for a Newtonian reflector made larger telescopes...

3 Replies

35 Views

Last post by Makuser
Wed Mar 22, 2023 12:25 pm
Beginners Telescope

Last post by chris_g « Wed Mar 08, 2023 10:11 pm
Replies: 9
by BRT » Wed Mar 08, 2023 12:50 am

First post

I am just starting in telescopes and would like to know what a good beginners telescope would be.

Thsnks!

mod edited, please do not post personal...

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With an interest in Lunar and planetary, that's why I recommended the Orion XT8.
Maximize aperture over electronics.
At $650 it's on the low end of...

9 Replies

112 Views

Last post by chris_g
Wed Mar 08, 2023 10:11 pm
Catseye upgrade

Last post by UkDave « Sun Feb 26, 2023 9:49 am

by UkDave » Sun Feb 26, 2023 9:49 am

Has anyone upgraded their 8” f5 Newtonian to be used with the cateseye system if so do you think it was worth doing , thoughts please .

Regards Dave

0 Replies

47 Views

Last post by UkDave
Sun Feb 26, 2023 9:49 am
Telescope Rings for Starfinder 12.5"

Last post by johnyjf « Sat Feb 11, 2023 7:00 pm
Replies: 1
by johnyjf » Sat Feb 11, 2023 5:13 pm

First post

I have just purchased a Meade Starfinder 12.5 OTA. The Focuser is rubbish but I have a replacement in process. I would like to use this scope with an...

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I just found the right thing on Orion Optics UK website, ordered and all. So ignore this request please!

1 Replies

57 Views

Last post by johnyjf
Sat Feb 11, 2023 7:00 pm
Purchasing a Big Dob

Last post by Makuser « Tue Jan 10, 2023 10:40 am
Replies: 15
by Ted » Fri Dec 30, 2022 4:12 am

First post

I remember in the early '70s seeing Ursa Minor in its entirety with my bare (young) eyes in our back garden. At the time I thought that was normal....

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Hi Ted. That is one beautiful light bucket and it looks to be well designed. Congratulations on your new Dob telescope Ted, best wishes for some...

15 Replies

392 Views

Last post by Makuser
Tue Jan 10, 2023 10:40 am
Mirror cleaning

Last post by KathyNS « Tue Nov 15, 2022 1:07 pm
Replies: 21
by KathyNS » Mon Oct 31, 2022 8:20 pm
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2
First post

I tried imaging M-45, the Pleiades, last night, but the haloes on the bright stars were out of control. Time to clean the mirror, methinks. Once...

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I've read about pinched optics and never really understood it. Are they saying that you actually distort the glass? That's hard to believe...

It's...
21 Replies

515 Views

Last post by KathyNS
Tue Nov 15, 2022 1:07 pm
Setup for newbie

Last post by Lady Fraktor « Sat Nov 12, 2022 4:50 pm
Replies: 9
by Cliffjg » Mon Nov 07, 2022 12:53 pm

First post

Just got Celestron astromaster 114 eq.
I do not see how to put an eyepiece on or how to take off the lens cover (seriously)
Any help is appreciated

Last post

Your telescope should have come with a 20mm and 10mm eyepieces.
Try the 20mm first, this is the lower power eyepiece. The larger the number the lower...

9 Replies

261 Views

Last post by Lady Fraktor
Sat Nov 12, 2022 4:50 pm
Collimation screws

Last post by KathyNS « Wed Nov 02, 2022 10:35 pm
Replies: 5
by KathyNS » Tue Nov 01, 2022 4:01 pm

First post

I had my first good look at the collimation screws when I had the mirror cell out for cleaning yesterday. I always thought that the screws had a very...

Last post

I don't know if this will help, but here is a picture of my mirror cell looking at it from the back of the telescope.
The straight screws lock the...

5 Replies

197 Views

Last post by KathyNS
Wed Nov 02, 2022 10:35 pm
Overpriced Unistellar Gets Another Plug (not from me)

Last post by BigKahuna « Fri Oct 21, 2022 2:01 am
Replies: 24
by helicon » Mon Jun 14, 2021 2:31 pm
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2
First post

In year of isolation, this $3,000 telescope may have changed citizen astronomy forever

Last post

One of my cub members has the 2nd generation unit and brings it to star parties for public showing. For this application it always has a crowd. Even...
24 Replies

20997 Views

Last post by BigKahuna
Fri Oct 21, 2022 2:01 am
Is "DURABRAND" telescope maker? Please help

Last post by SkyHiker « Sun Jul 03, 2022 3:51 am
Replies: 17
by gauraog » Fri Jun 24, 2022 11:17 am

First post

I'm new here. Im buying my first telescope from olx. Maker is Durabrand. I never heard of. Also there are no parameters mentioned on Tube about focal...

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(BTW: a question to Henk: what color have you seen in M51 etc. through a big dob? Was it the red of star-forming regions? )

No it was blueish green...

17 Replies

899 Views

Last post by SkyHiker
Sun Jul 03, 2022 3:51 am
Importance of capping the OTA after a session

Last post by Aratus « Thu Jun 23, 2022 8:31 am
Replies: 6
by KathyNS » Tue Jun 21, 2022 11:18 pm

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I have gotten lazy about capping my scope after a session if there are more clear nights in the forecast. Each cap or uncap requires a trip out to...

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If you have never had a cap, or lost one, a very cheap replacement is one of those plastic cardboard tube caps used to mail posters and things.

6 Replies

480 Views

Last post by Aratus
Thu Jun 23, 2022 8:31 am
Telescope transportation

Last post by SkyHiker « Wed Mar 30, 2022 8:34 am
Replies: 8
by Marcelo F. » Mon Mar 28, 2022 3:04 pm

First post

I did a quick search on telescope transportation and didn't find any topic dedicated to this specific subject in this forum (I could be wrong, in...

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I use the 14 cylinder of my 12 Dob to store luggage. For that I cut a multiplex disc on a rope that I lower on to the mirror holders after I take the...

8 Replies

1009 Views

Last post by SkyHiker
Wed Mar 30, 2022 8:34 am
Look at this Dob 760mm😳

Last post by Lady Fraktor « Wed Feb 09, 2022 5:20 am
Replies: 14
by Frankskywatcher » Tue Feb 01, 2022 2:07 pm

First post

Check this out !

Last post

280mm is tiny, you need this one, 510mm (20 ) triplet.

At 331932.77 € + 20% DPH it is a steal :lol:

14 Replies

3424 Views

Last post by Lady Fraktor
Wed Feb 09, 2022 5:20 am
“Jones Bird” reflector modification

Last post by AstroBee « Mon Jan 17, 2022 6:29 am
Replies: 19
by Barnacle » Tue Dec 21, 2021 1:17 am

First post

I picked up one of these “notorious” short tube reflector telescopes some years ago.
scop.jpg
The specification is a 114mm diameter mirror, Focal...

Last post

Yes, That makes sense.
Thanks for the clarification.

19 Replies

28320 Views

Last post by AstroBee
Mon Jan 17, 2022 6:29 am
Anyone know where to buy a 6 inch dob?

Last post by Lady Fraktor « Wed Jan 05, 2022 9:35 pm
Replies: 14
by Shelby » Sun Dec 26, 2021 5:04 am

First post

I am on a quest to purchase a 6 inch dobsonian telescope. However, it seems that they are all sold out everywhere I look right now. The one I am most...

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Do not pop the bubble wrap, that is where they put the extra cloud seeds.

14 Replies

22067 Views

Last post by Lady Fraktor
Wed Jan 05, 2022 9:35 pm
Refractordude Buys A Reflector Telescope

Last post by Refractordude « Tue Dec 07, 2021 12:43 am
Replies: 26
by Refractordude » Thu Nov 11, 2021 12:01 am
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2
First post

I got this scope that comes with an object finder app. The LT was easy to setup and very light to carry. However, I have an issue with the app. I...

Last post

Tried again but about ten degrees off target. Maybe it is the metal cross bar. Any help would be appreciated. Thanks all
26 Replies

17647 Views

Last post by Refractordude
Tue Dec 07, 2021 12:43 am
Dew on the Primary???

Last post by notFritzArgelander « Thu Dec 02, 2021 7:07 pm
Replies: 6
by helicon » Thu Dec 02, 2021 4:08 pm

First post

I had a good view of the Andromeda galaxy which I shared my sister and my nephew who were over for dinner last night. I set up the scope at 5:00 and...

Last post

Since my hair is thinning on top I don't need a hairdryer anymore....

Neither do I. What hair I have I keep close cropped. My hair drier is...

6 Replies

4288 Views

Last post by notFritzArgelander
Thu Dec 02, 2021 7:07 pm
Tasco 11RT

Last post by Richard « Mon Nov 29, 2021 2:35 pm
Replies: 6
by LDW47 » Thu Nov 25, 2021 3:12 am

First post

Has any one owned or used a Tasco Model 11RT scope from the mid 80's ? I have a chance to buy one like new, incl an eq mount, for about $100 C but...

Last post

IMG_1325.JPG
Thanks have not posted for some time so probably forgot !

6 Replies

4098 Views

Last post by Richard
Mon Nov 29, 2021 2:35 pm
Took the Bait: Bresser 208mm Newtonian

Last post by j21blackjack « Fri Nov 05, 2021 5:49 pm
Replies: 13
by mikemarotta » Tue Jul 13, 2021 8:43 pm

First post

I received a marketing email from Explore Scientific on recent returns for sale. The price for this Bresser branded Newtonian was low enough that I...

Last post

It's been a few months since the last post in this thread. I just received my 208 last week. How has yours been? How's the collimation process on it?

13 Replies

10942 Views

Last post by j21blackjack
Fri Nov 05, 2021 5:49 pm
8 Inch Dob Vs 10 Inch Dob

Last post by DeanD « Thu Oct 28, 2021 10:47 pm
Replies: 10
by Refractordude » Thu Oct 28, 2021 1:27 am

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From your experience is it worth getting a ten inch dob rather than an eight inch dob? Here is an article covering the topic.

I like to know...

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BTW, I currently have a 12 dob, and it takes up less room than my 4 refractor in the car. I redesigned my 10 dob to be a truss-type rather than the...

10 Replies

4662 Views

Last post by DeanD
Thu Oct 28, 2021 10:47 pm
What Do You Know About This DOB?

Last post by Bigzmey « Wed Oct 06, 2021 4:51 pm
Replies: 12
by Refractordude » Sun Oct 03, 2021 12:58 am

First post

Thanks all

Last post

But let's consider 'as you can handle' part. 10 DOB is substantially larger, heavier and more time and hustle to set up compared to your 6 frac....

12 Replies

5309 Views

Last post by Bigzmey
Wed Oct 06, 2021 4:51 pm
whats the largest F4 to F6 focal ratio scope money can buy?

Last post by Bigzmey « Sat Jul 10, 2021 7:28 pm
Replies: 14
by realflow100 » Sun Jun 28, 2020 1:10 pm

First post

I dont like the really long focal length scopes because it makes it really hard to locate a target and center it. and the requirement of an obscenely...

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I think my issue more right now is mostly light pollution issues. rather than size of my scope.

I can very clearly and easily see the background sky...

14 Replies

8702 Views

Last post by Bigzmey
Sat Jul 10, 2021 7:28 pm
Sometimes I zone out

Last post by MistrBadgr « Sat Jul 10, 2021 6:47 pm
Replies: 2
by Chich » Sun May 23, 2021 3:03 am

First post

Was scrolling through FB. A lot of astronomy related postes when I came upon this. First thought was There are better ways to clean your primary...

Last post

Visualize some person suspended above the mirror of one of the really big telescopes with a specially made version of something like that. :Think:

2 Replies

2611 Views

Last post by MistrBadgr
Sat Jul 10, 2021 6:47 pm
Diagonal Size For A Simple Newtonian

Last post by notFritzArgelander « Fri Jul 09, 2021 8:34 pm
Replies: 8
by JayTee » Fri Jul 09, 2021 1:16 am

First post

Hi all,

I want to upgrade the 1.25 focuser on my 8 f/7.5 Newtonian to a 2 focuser. My question is, will my current diagonal mirror minor axis size...

Last post

Along with the helpful link that nFA provided (thanks), I have used that in the past but I find the multitude of inputs to be a bit confusing so I...

8 Replies

4060 Views

Last post by notFritzArgelander
Fri Jul 09, 2021 8:34 pm
Digging out the old Newt!

Last post by Ylem « Fri Jul 02, 2021 10:08 pm
Replies: 18
by Gordon » Thu Apr 15, 2021 8:08 pm

First post

For many years I used a 10 inch Skywatcher as my primary telescope, a couple of years back I purchased a ES80ed-cf refractor to do most of my imaging...

Last post

10 on an Atlas, yep that's a big boy! :lol:

18 Replies

10408 Views

Last post by Ylem
Fri Jul 02, 2021 10:08 pm

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