Catadioptric telescopes

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Temp equalization AKA cool down time for small Mak?

Last post by notFritzArgelander « Wed Apr 01, 2020 12:25 am
Replies: 9
by pakarinen » Tue Mar 17, 2020 12:44 pm

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Wondering if there's an average recommended cool down time for small Maks. I took out my new 90 this morning and without waiting I had a look at...

Last post

Hmm, question, how does insulating the OTA help with cool down?
Would not the insulation hold the heat in the scope?
What am I missing?

It reduces...

9 Replies

380 Views

Last post by notFritzArgelander
Wed Apr 01, 2020 12:25 am
Rain is coming to Northern California - sorry.

Last post by Bigzmey « Mon Mar 16, 2020 4:59 pm
Replies: 9
by cmassa » Sat Mar 14, 2020 3:57 am

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This telescope should be good for a fair amount of rain which we really need. I managed to get the last AG Optical 12.5 Convergent telescope. It's...

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It's a beauty, congrats! I think we are getting the rain which supposed to go your way. :lol:

9 Replies

347 Views

Last post by Bigzmey
Mon Mar 16, 2020 4:59 pm
SCT Tube Damage

Last post by notFritzArgelander « Sun Mar 15, 2020 6:32 pm
Replies: 40
by Graeme1858 » Wed Feb 05, 2020 11:54 pm
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I noticed my STC had some strange marks on the inside of the tube and the corrector plate and mirror had dust. I had just fitted the mounting bar for...

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Well... that's dismal news. Sorry to hear that folks are being non responsive.
40 Replies

1682 Views

Last post by notFritzArgelander
Sun Mar 15, 2020 6:32 pm
Bresser 152/1900

Last post by helicon « Sat Mar 07, 2020 5:36 pm
Replies: 8
by Mack41 » Thu Feb 20, 2020 9:10 pm

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Hi
Just pulled the trigger on a bresser 152/1900 mak
Got it ex display for £200 so steal really.
Anyone had any experience with bresser scopes ?

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Glad you took delivery and were able to get it set up. Nice looking scope.

8 Replies

662 Views

Last post by helicon
Sat Mar 07, 2020 5:36 pm
C14

Last post by Mandrew « Tue Jan 28, 2020 6:57 am
Replies: 8
by Mandrew » Mon Jan 20, 2020 6:27 am

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I have been using my 180mm Mak-Cass for Lunar photography, and want to go for the gusto. I am saving up foe a Celestron C14 Edge for serious work....

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Thanks all for your comments! I am a big fan of Damians work. Am also considering a C11. For dso’s I just ordered a Celestron 8” RASA.

8 Replies

364 Views

Last post by Mandrew
Tue Jan 28, 2020 6:57 am
As if I need a new telescope...

Last post by pakarinen « Fri Jan 24, 2020 2:05 pm
Replies: 49
by Lady Fraktor » Thu Jan 09, 2020 6:28 am
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First post

This looks interesting

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For people in the USA they can be purchased through Teleskop-Service and at a slightly lower price for some reason:

Nice; but they still...
49 Replies

1213 Views

Last post by pakarinen
Fri Jan 24, 2020 2:05 pm
6-inch Mak?

Last post by John Baars « Wed Jan 22, 2020 10:10 pm
Replies: 15
by pakarinen » Sat Aug 24, 2019 6:49 pm

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In the random churning of my idle brain, I’ve been thinking about a 6-inch Mak. I have 80mm and 120mm ST fracs and maybe a slower Mak would be a nice...

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I think it is worth considering.
While doing that you could consider the OMC140 as well. (5.5 inch)

I have the normal 1/4 P/V one, but Wolfgang...

15 Replies

704 Views

Last post by John Baars
Wed Jan 22, 2020 10:10 pm
First (day)light SCT EdgeHD 9.25"

Last post by Bigzmey « Tue Jan 21, 2020 8:29 pm
Replies: 11
by Bigzmey » Mon Jan 20, 2020 9:51 pm

First post

I was really hoping for some clear skies this weekend, but it did not happen. Well, at least it was not raining. :D

Wanted to test my new EdgeHD...

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nice images, who needs a zoom lense when ya have a 9.25 edge !

Exactly! :D

11 Replies

289 Views

Last post by Bigzmey
Tue Jan 21, 2020 8:29 pm
EDGE 1100HD vs Meade 12 F10 ACF

Last post by Bigzmey « Mon Jan 20, 2020 10:12 pm
Replies: 7
by DMouse » Sat Jun 29, 2019 4:55 pm

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So, I used to own a second hand EDGE1100HD, and it had some mirror flop issues, so I sold it. I am currently using an f4 12 inch newt, and find using...

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It seems that it is hit and miss with mirror flop. My 8 SCT (the newest model) has almost none, and older EdgeHD 9.25 has more. However, you can get...

7 Replies

555 Views

Last post by Bigzmey
Mon Jan 20, 2020 10:12 pm
Oh boy, oh boy, oh boy, oh boy!

Last post by Bigzmey « Mon Jan 20, 2020 6:47 pm
Replies: 32
by Bigzmey » Thu Jan 16, 2020 9:21 pm
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Look what came in the mail yesterday. :happy-jumpeveryone:

Edge-A.jpg

Edge-B.jpg

I have already attached my Baader BBHS diagonal to it. :D...

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Nice! I am saving up for an edge also!

Thanks Mandrew! Retail was too rich for me, so I gambled on a used one. The gamble paid off, the scope is...
32 Replies

690 Views

Last post by Bigzmey
Mon Jan 20, 2020 6:47 pm
Winter viewing with an SCT

Last post by Glenbo58 « Sun Jan 12, 2020 12:39 am
Replies: 5
by Glenbo58 » Sat Jan 11, 2020 9:22 pm

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Hi everyone,

I live in the Muskokas of Ontaio Canada where the temperature can flux between +35.f to -15f. on a given day or evening this time of...

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Funny you should mention the VIixen VC200L, as there is one with a Sphinx goto mount for a really good price closeby. Did a rather extensive...

5 Replies

279 Views

Last post by Glenbo58
Sun Jan 12, 2020 12:39 am
Beginner looking for £200/£250 budget telescope

Last post by BigKahuna « Thu Jan 09, 2020 2:27 pm
Replies: 10
by samavfc123 » Mon Nov 25, 2019 12:42 pm

First post

Hi All,

Been looking for ages for a telescope within my £200 budget and been struggling. i found these teelscopes:

Celestron 31051 AstroMaster...

Last post

Have you considered the used market? I've had good luck this way. Some people buy telescopes and get bored with them right away. I purchased a Meade...

10 Replies

594 Views

Last post by BigKahuna
Thu Jan 09, 2020 2:27 pm
SCT Storage in Cold Weather

Last post by sdbodin « Wed Dec 11, 2019 9:37 pm
Replies: 8
by Graeme1858 » Tue Dec 10, 2019 8:17 pm

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With the impending cold weather I am concerned for the welfare of my telescope! In the summer I bought one of those garden storage mini shed things...

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I'll add that my PCs are not stored in the outside shed, but rather carried out for an imaging session. They work OK, but seem to not like the cold...

8 Replies

666 Views

Last post by sdbodin
Wed Dec 11, 2019 9:37 pm
RC Collimation

Last post by DMouse « Fri Nov 15, 2019 5:56 am
Replies: 7
by DMouse » Tue Oct 15, 2019 2:19 pm

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Hi, just got my first RC scope, 12 inch f8 truss tube. Anyway I already have a Hotech SCT collimator which I used on the EDGE110HD scope I had. The...

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Update - well I got my Howie Glatter laser collimator, and the square grid hologram attachment. This thing is awesome!! Aligning the mirrors was a...

7 Replies

850 Views

Last post by DMouse
Fri Nov 15, 2019 5:56 am
Focal Reducer Options for Meade ACF

Last post by mbenjaminz28 « Tue Oct 22, 2019 1:01 am
Replies: 1
by a100171 » Wed Aug 21, 2019 12:06 am

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I am hearing that there is going to be a modern focal reducer available for the Meade ACF line of scopes in a couple of months, hopefully around the...

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I use the optec Leptus .62 with good effect with my kaf8300 sensor on my meade 12 F8 acf.

1 Replies

356 Views

Last post by mbenjaminz28
Tue Oct 22, 2019 1:01 am
Post a Pic of your CAT.... SCT, MAK-Cass , D-K

Last post by Sky « Fri Oct 18, 2019 10:50 pm
Replies: 27
by Rainmaker » Thu Jun 20, 2019 1:13 pm
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I have heard someone say that a Picachu :roll: is worth a 1000 words so here is place you can post up some pictures of your Cat, Cass, Mak, DK etc...

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My Meade 12 LX200 Classic that's been in my garage rooftop ROR observatory for the past 18 years. It's proven to be an excellent and reliable imaging...
27 Replies

1707 Views

Last post by Sky
Fri Oct 18, 2019 10:50 pm
Omegon Maks?

Last post by Bigzmey « Mon Oct 14, 2019 10:31 pm
Replies: 1
by pakarinen » Mon Oct 14, 2019 4:07 pm

First post

Curious if anybody has experiences - pro or con - with Omegon Maks. I'm thinking the MightMak 90 might be good for some lunar observing. Gotta love...

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I assume shipping from Europe would run at least $50, for about $270 total. If you are looking specifically for a small Mak on a table top mount...

1 Replies

196 Views

Last post by Bigzmey
Mon Oct 14, 2019 10:31 pm
Collimation Proceedure

Last post by Piet Le Roux « Mon Oct 14, 2019 9:26 pm
Replies: 6
by Gulf Coast Guy » Fri Jun 28, 2019 12:04 am

First post

What does everyone use? This is mine.

Simple and quick. Saves a lot of that Center-Focus- recenter- re-focus... ad nauseum

Last post

As far as SCT's go I don't know any other way to do it except I use a wooden stick, something like a chopstick, that I hold from the centre of the...

6 Replies

526 Views

Last post by Piet Le Roux
Mon Oct 14, 2019 9:26 pm
meade 12'' mirror alignments

Last post by JayTee « Sat Oct 12, 2019 8:53 pm
Replies: 3
by yobbo89 » Sat Oct 12, 2019 3:01 pm

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so i've pulled this scope apart to tighten the secondary holder and cleaned the corrector. since i replaced the secondary bolts i thought i'd give...

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Naw, I made mine because of the whole idle hands thing, I just needed something to do. Plus, I had a spare pizza box top just screaming make me into...

3 Replies

231 Views

Last post by JayTee
Sat Oct 12, 2019 8:53 pm
Going in new direction for Meade 8"ACF, no longer considering LS mount

Last post by Bigzmey « Sat Oct 12, 2019 1:06 am
Replies: 2
by BruceHinton » Tue Oct 08, 2019 3:28 pm

First post

Hi all,

Maybe I should be placing this in the beginners' sub-forum, but here goes!

I just acquired the Meade 8 , and have given up on spending...

Last post

Bresser EXOS2 manual EQ also has an add-on kit to convert to GoTo, but it is priced almost as high as stand alone computerized mount.

It is also...

2 Replies

252 Views

Last post by Bigzmey
Sat Oct 12, 2019 1:06 am
100mm Mak repair

Last post by Lady Fraktor « Mon Oct 07, 2019 4:27 pm
Replies: 21
by Richard » Thu Oct 03, 2019 3:24 pm
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100 mm Mac broken lens.Hi all so I went to a garage sale and purchased this unknown Mak for 13 US including mount and 2 rubbish eyepieces it came...

Last post

If you see any flare/ scatter from the chip just cover it with black paint or nail polish.
It will not affect the views afterwards.

Wow. I...
21 Replies

713 Views

Last post by Lady Fraktor
Mon Oct 07, 2019 4:27 pm
Hi guys, just bought my first scope, lucky me it is a mak

Last post by Stonesinthesky « Fri Sep 27, 2019 7:16 am
Replies: 28
by Stonesinthesky » Sun Sep 01, 2019 2:11 am
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I an pretty excited to have bought this as my first, as I didn't want to be deterred by poor visibility and grainy photos...I bought a meade...

Last post

Made myself a nice dew shield from a piece of ergo glitter mat that I bought at the dollar store... it covers the entire ota and extends about 5...
28 Replies

1107 Views

Last post by Stonesinthesky
Fri Sep 27, 2019 7:16 am
Orion (GSO) 6" RC; Focuser is less than Stellar

Last post by dritter « Sun Sep 08, 2019 11:54 pm
Replies: 10
by a100171 » Mon Sep 02, 2019 9:01 pm

First post

Pun intended!

I spent the holiday doing some overdue maintenance on the scope collection. Coming off my very successful alignment/collimation of...

Last post

I agree on avoiding low end focusers too.

I've been through a few myself and there's almost nothing worse than a good piece of gear being ruined by...

10 Replies

517 Views

Last post by dritter
Sun Sep 08, 2019 11:54 pm
Celestron 8" sct

Last post by JayTee « Sat Sep 07, 2019 9:25 pm
Replies: 4
by PapaFox » Sat Sep 07, 2019 5:47 am

First post

Hi guys,
I'm looking to purchase an 8 sct for my Avx mount. I see that Highpoint has a Celestron C8 and an Orange tube se8 for about $165 less. From...

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Congrats, you will enjoy that scope.

Cheers,
JT

4 Replies

333 Views

Last post by JayTee
Sat Sep 07, 2019 9:25 pm
Something New...to me.

Last post by dagadget « Mon Sep 02, 2019 8:18 pm
Replies: 24
by Don Quixote » Tue Jun 25, 2019 10:33 pm
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While I was out and about today I stopped by to visit my friend Henry.

By the time I left he had gifted me another telescope.
I am not sure of the...

Last post

This might be a Telescope Tale to end all tales but someone wants to buy me this. The funny thing is they asked where I get my scopes and I said...
24 Replies

1242 Views

Last post by dagadget
Mon Sep 02, 2019 8:18 pm

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