Reflector Telescopes

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Digging out the old Newt!

Last post by Lady Fraktor « Fri Apr 16, 2021 5:07 am
Replies: 5
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...

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Have fun with the telescope Gordon :)

5 Replies

49 Views

Last post by Lady Fraktor
Fri Apr 16, 2021 5:07 am
Is A No Need To Collimate Newtonian Telescope Possible?

Last post by Piet Le Roux « Sat Mar 13, 2021 10:05 am
Replies: 10
by Refractordude » Thu Mar 11, 2021 11:06 pm

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Did not think this was possible until now. Perhaps marketing hype or I am not reading it correctly. Left click the image.

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They don't say that it does not need collimation they just state that it does not need collimation every time you assembled it like a truss design, I...

10 Replies

237 Views

Last post by Piet Le Roux
Sat Mar 13, 2021 10:05 am
Starblast 6 focuser

Last post by Bigzmey « Fri Feb 19, 2021 1:28 am
Replies: 9
by Seadawg216 » Wed Feb 17, 2021 9:11 pm

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Everything I've researched regarding the Starblast 6 indicates that the weakest part is the plastic focuser. Is it that bad where it would be a...

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I take it that it would fit & be relatively easy to replace?

I would check with Agena directly, they sell a lot of focusers.

I do know for a fact...

9 Replies

216 Views

Last post by Bigzmey
Fri Feb 19, 2021 1:28 am
What Do You Think About This?

Last post by John Baars « Mon Feb 15, 2021 11:08 am
Replies: 1
by Refractordude » Mon Feb 15, 2021 4:56 am

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He is getting more mag by decreasing the aperture and increasing the focal ratio. Left Click the image.

Last post

He is describing a side effect as if it were a main effect.
By masking the aperture he decreases the effects of external seeing. No wonder he sees...

1 Replies

140 Views

Last post by John Baars
Mon Feb 15, 2021 11:08 am
6" old usa vs. new gso

Last post by helicon « Thu Nov 19, 2020 2:36 pm
Replies: 4
by Jones » Tue Nov 17, 2020 2:43 am

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Comparison of 6 ers Edmund f8 40 yrs. old vs. GSO f6 just built.
The Edmund is nearly the best 6 ever looked thru, and the GSO uses a claimed 1/10th...

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I had the old red tube Edmund Super Space Conqueror - a 4 1/4 reflector. At f/10 it provided good views of the planets with its spherical mirror....

4 Replies

560 Views

Last post by helicon
Thu Nov 19, 2020 2:36 pm
Agena Astro certified mirrors

Last post by Jones « Sun Nov 15, 2020 9:56 pm
Replies: 8
by Jones » Mon Oct 05, 2020 5:11 am

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Agena has started a new service of testing their photo newtonians to be diffraction limited before they ship out. I asked them if they would do a...

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The 6 f/6 with Agena certified mirror is ready to go.
Of course this is Arizona and the skys are not cloudy all nite, no California fire smoke...

8 Replies

955 Views

Last post by Jones
Sun Nov 15, 2020 9:56 pm
Does my scope have light leaks?

Last post by UlteriorModem « Mon Oct 19, 2020 5:32 pm
Replies: 4
by KathyNS » Mon Oct 19, 2020 3:01 pm

First post

Nothing serious. Just a question that I wasn't setting out to answer, but that I accidentally answered anyway.

I was noticing some hot pixels that...

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My newtonian astrograph has more leaks than a sieve.

Main source is from behind the primary mirror believe it or not.

4 Replies

403 Views

Last post by UlteriorModem
Mon Oct 19, 2020 5:32 pm
Bob’s knobs & Corrector plate

Last post by Greenman « Wed Sep 16, 2020 10:40 pm
Replies: 11
by Greenman » Wed Sep 16, 2020 11:18 am

First post

Well the upgrade to the knobs was simple, but looking at the corrector plate (I'm normally at the other end) it is dirty and there are signs of...

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I'd clean it, but that's just me.

I've taken the corrector off my Meade LX10 SCT a couple of times over the years. Pretty easy. Just remember to use...

11 Replies

798 Views

Last post by Greenman
Wed Sep 16, 2020 10:40 pm
new recommendations and opinions

Last post by JayTee « Sun Sep 06, 2020 8:49 pm
Replies: 7
by tomthetank » Sun Sep 06, 2020 12:58 am

First post

Hi just had time to organize this better new to astrophotography received a lot of info within the last day from people on forum. This is what id...

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Remember, most commercial Newtonian telescopes will not bring the camera close enough to the mirror to give you an in focus image. Only when it is...

7 Replies

828 Views

Last post by JayTee
Sun Sep 06, 2020 8:49 pm
Focusing Issue

Last post by KingNothing13 « Wed Sep 02, 2020 10:24 pm
Replies: 8
by KingNothing13 » Tue Sep 01, 2020 9:42 pm

First post

I mentioned briefly in my short report about using the Nexus II for the first time a focusing issue with my AD10.

Here's the history:
Up until 2-3...

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Are those trees nearby? A close by object needs far more outward travel of the focusser than an object at infinity, like a star.

They are...

8 Replies

898 Views

Last post by KingNothing13
Wed Sep 02, 2020 10:24 pm
Mirror Resurface?

Last post by yobbo89 « Wed Aug 19, 2020 2:25 pm
Replies: 8
by KingNothing13 » Wed Aug 05, 2020 12:58 pm

First post

I will preface this by saying I know my mirror is in NO need of resurfacing, and I do NOT plan on having it resurfaces any time soon.

But having...

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cheers joe, i'll enjoye the read.

8 Replies

1329 Views

Last post by yobbo89
Wed Aug 19, 2020 2:25 pm
CELESTRON STARSENSE EXPLORER

Last post by The Happy Parrot « Sun Aug 02, 2020 12:22 pm
Replies: 29
by mistac » Thu Jun 18, 2020 3:57 pm
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2
First post

Hi, first post as a Newby. I’ve been doing a little bit of basic research as I’m interested in getting a telescope. As I’m a complete beginner I was...

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Thanks - it is an iphone 8 and compatible as I had checked that before purchasing. I think the alignment process is now ok and I did manage to get...
29 Replies

3700 Views

Last post by The Happy Parrot
Sun Aug 02, 2020 12:22 pm
Difference between SkyWatcher Explorer 130 RA and 130M?

Last post by terrynak « Sun Jul 26, 2020 9:22 am
Replies: 26
by flord.lord » Tue Jul 21, 2020 10:28 pm
1

2
First post

Hi,

The two scopes in the title are:

And

I was a bit confused by this:

- Is the only difference the multi-speed handset, and DC...

Last post

switched over to the EQ mount. Took a while before I learned how to use an EQ.

This basically summarises last night :? !

Got rough polar...
26 Replies

2706 Views

Last post by terrynak
Sun Jul 26, 2020 9:22 am
a nice suprise

Last post by rickolson62 « Sun Jul 12, 2020 2:43 pm
Replies: 5
by rickolson62 » Sat Jul 11, 2020 12:54 pm

First post

hello folks! my brother in law expressed interest in viewing so a couple of years ago i got him an old orion 6 dob, deep space explorer
for...

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thanks guys! i did some reading and it turns out these were pre china and over seen by Terry Ostahowski at Discovery who made the optics for orion at...

5 Replies

847 Views

Last post by rickolson62
Sun Jul 12, 2020 2:43 pm
Will the SkyWatcher Supatrak mount fit the SkyWatcher 130/650 Newt?

Last post by KingClinton « Fri Jul 10, 2020 11:09 am
Replies: 3
by flord.lord » Fri Jul 10, 2020 7:58 am

First post

Hi,

I have an old Skywatcher Supatrak mount lying around. I've noticed it fits with the normal, black SkyWatcher dovetail bar; I've attached images...

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I have a 130PDS with the same green bar and it fits. There is some play but once tightened up it works just fine.
Only way to know for sure is to...

3 Replies

614 Views

Last post by KingClinton
Fri Jul 10, 2020 11:09 am
whats the largest F4 to F6 focal ratio scope money can buy?

Last post by Lady Fraktor « Sun Jun 28, 2020 6:02 pm
Replies: 5
by realflow100 » Sun Jun 28, 2020 1:10 pm

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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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These are not the largest available nor the most expensive.
If you want quality you have to pay accordingly.

5 Replies

891 Views

Last post by Lady Fraktor
Sun Jun 28, 2020 6:02 pm
Moonliting a truss dob

Last post by Kanadalainen « Sat Jun 20, 2020 10:38 pm
Replies: 5
by Kanadalainen » Sat May 23, 2020 1:03 pm

First post

I had a CR2 Moonlite focuser on my XT10, and that scope was traded (with its stock focuser) for a mount... so I had an extra focuser.

The helical...

Last post

Cool! I also have a moonlite focuser.

They are great, simple Crayfords. Beautifully machined to close tolerances.

That is a clear and lucid...

5 Replies

1035 Views

Last post by Kanadalainen
Sat Jun 20, 2020 10:38 pm
Different collimation for f/5 and lower newt?

Last post by Piet Le Roux « Fri Jun 05, 2020 3:24 pm
Replies: 5
by StarLord101 » Thu Jun 04, 2020 9:18 pm

First post

I picked up an avx mount with the six inch celestron Newtonian reflector. I've done collimation before but it's been years, so I read some guides...

Last post

I picked up an avx mount with the six inch celestron Newtonian reflector. I've done collimation before but it's been years, so I read some guides...

5 Replies

1154 Views

Last post by Piet Le Roux
Fri Jun 05, 2020 3:24 pm
New Diagonal Mirror To Accommodate a 2" focuser

Last post by JayTee « Sun May 31, 2020 2:26 am
Replies: 2
by JayTee » Mon May 18, 2020 3:30 am

First post

My current Dob scope is an 8 f/7.5 Newt with a 1.25 focuser. I want to upgrade to a 2 focuser but I believe my diagonal is too small. What size...

Last post

UPDATE:

I measured my secondary mirror by guestimate and got 1.44 minor axis diagonal which, according to the online telescope design websites, is...

2 Replies

753 Views

Last post by JayTee
Sun May 31, 2020 2:26 am
Buying a new telescope, looking for recommendations

Last post by rpdayton « Sat May 30, 2020 5:57 pm
Replies: 20
by rpdayton » Mon May 25, 2020 12:30 pm
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2
First post

This is a copy-paste from astronomyforums, so apologies if posting both places is frowned upon. I had started this epic journey there several years...

Last post

Thanks.
It is extremely repetitive in the altitude axis now.
I wish I had done this back when it was new.
Thanks again.
20 Replies

1971 Views

Last post by rpdayton
Sat May 30, 2020 5:57 pm
A Question For Dobsonian Owners

Last post by helicon « Sun May 24, 2020 3:35 pm
Replies: 6
by Refractordude » Sat May 23, 2020 5:57 pm

First post

It will be a little while before I have the play money for a 6 ed apo refractor with an az mount. I hate diffraction spikes, but often think of...

Last post

My 10 is fine. The chances of getting one with sub-par optics is very slight as I believe all of the mirrors are well-tested at the factory before...

6 Replies

859 Views

Last post by helicon
Sun May 24, 2020 3:35 pm
New scope!

Last post by Ylem « Fri May 15, 2020 2:14 pm
Replies: 8
by jazzin » Fri May 15, 2020 2:07 am

First post

UPS brought me a new toy today! :)

More power!

Last post

Congratulations 🎉
8 will attract a good amount of clouds ;)

8 Replies

957 Views

Last post by Ylem
Fri May 15, 2020 2:14 pm
Apertura 150mm collimation screw length

Last post by astrowolf67 « Sun Apr 19, 2020 12:58 pm
Replies: 2
by astrowolf67 » Mon Apr 13, 2020 8:49 pm

First post

I'm not sure how popular the Apertura 150mm f/5 OTA is within the community, but, I recently purchased one a couple months ago. For visual use, I had...

Last post

Richard, I needed the extension for visual focusing, on infinity. My 2 nosepiece arrived yesterday, and, I am happy to report, removal of the 1.25 /2...

2 Replies

703 Views

Last post by astrowolf67
Sun Apr 19, 2020 12:58 pm
New scope a Skywatcher 10 inch Dobs

Last post by Lady Fraktor « Sat Mar 28, 2020 7:58 pm
Replies: 18
by Richard » Thu Jan 30, 2020 2:38 pm

First post

A hotel near me was being refurbished by a friend of mine and they had a 10 inch Skywatcher telescope , I went to see it , I think it was never used...

Last post

Hopefully you get some good use from it.
3 wheels are usually more stable than 4 as you cannot get a side to side tipping motion by balancing on 2...

18 Replies

1642 Views

Last post by Lady Fraktor
Sat Mar 28, 2020 7:58 pm
New Orion XX12g

Last post by Dragonsfire « Sat Mar 14, 2020 7:07 pm
Replies: 5
by PatrickW » Wed Aug 21, 2019 3:47 pm

First post

Hi All!

Bought an XX12g a couple weeks ago. Have wanted a nice telescope ever since I was a kid...

Here's what I've done and am doing, and I've got...

Last post

Congrats !!

5 Replies

1254 Views

Last post by Dragonsfire
Sat Mar 14, 2020 7:07 pm

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