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Catsperch Chair Plans

Last post by PhilPhree « Mon Oct 04, 2021 4:36 pm
Replies: 19
by Lady Fraktor » Wed Jul 22, 2020 10:06 pm

First post

If you want to try your wood working skills to build a observing chair.
Observing Chair Plans to Build.pdf

Last post

Hello !
Fine work, and very useful !
Speaking of Denver chair , it seems that Denver is an creative city. In France, we have sabot de Denver...

19 Replies

17121 Views

Last post by PhilPhree
Mon Oct 04, 2021 4:36 pm
prism vs dielectric diagonals? false color sharpness contrast brightness ect?

Last post by Richard « Mon May 16, 2022 3:19 pm
Replies: 7
by realflow100 » Sat May 14, 2022 10:55 am

First post

I have a dielectric mirror diagonal. and a prism erect image diagonal
and there seems to be a weird tradeoff between them

dielectric seems sharpest...

Last post

The Dielectric mirrors were made for the Army with their spotting scopes in north Africa wars as the sand gets in so they could just wipe it off , it...

7 Replies

68 Views

Last post by Richard
Mon May 16, 2022 3:19 pm
Upgrading my diagonal - need help

Last post by Bigzmey « Fri Apr 29, 2022 6:08 pm
Replies: 22
by West83 » Sun Apr 03, 2022 10:29 pm
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First post

Hi all,

So I am searching for a diagonal to replace the very old stock diagonal on my celestron fs80.

I plan on upgrading the focuser as well, but...

Last post

Congrats on the new diagonal! I had good experience with Altair brand.
22 Replies

498 Views

Last post by Bigzmey
Fri Apr 29, 2022 6:08 pm
Artesky Ultra Guide MKII 60 mm Guide-Scope?

Last post by pakarinen « Sat Apr 16, 2022 2:56 pm

by pakarinen » Sat Apr 16, 2022 2:56 pm

Anybody know if this can take a diagonal (RACI) and a regular EP? I could use an upgraded finder for my 102mm, but I don't want a straight through...

0 Replies

43 Views

Last post by pakarinen
Sat Apr 16, 2022 2:56 pm
filters, filters and filters.

Last post by Bigzmey « Sat Mar 26, 2022 9:35 pm
Replies: 20
by messier 111 » Mon Mar 14, 2022 4:02 pm
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2
First post

hi all ,

I already have a filter, Celestron 94123 UHC/LPR filter
which I used with my 120mm.

now I was wondering if it was worth buying a filter,...

Last post

I hear you Bill. :) My first option is always to see nebulae in their natural environment. If that fails I push for it with filters. I would rather...
20 Replies

979 Views

Last post by Bigzmey
Sat Mar 26, 2022 9:35 pm
'New' Vernonscope barlow and diagonal

Last post by Lady Fraktor « Tue Mar 08, 2022 5:32 pm

by Lady Fraktor » Tue Mar 08, 2022 5:32 pm

I see that the gold diagonal has been re-issued and the 2.4 Dakin has been redesigned to become a 2 1.5x as well as the standard 1.25 2.4x...

0 Replies

255 Views

Last post by Lady Fraktor
Tue Mar 08, 2022 5:32 pm
Good LP filters for visual?

Last post by turboscrew « Mon Feb 28, 2022 8:07 pm
Replies: 12
by turboscrew » Sun Feb 27, 2022 4:21 pm

First post

Last night I finally got to try out my Optolong UHC with M42, and it helped. The effect could have been a bit stronger, though. But as a side effect,...

Last post

Checked from 3 EU area stores, for Astronomik, Lumicon, Chroma, DMG and Tele Vue 1.25 UHCs.
Only this is available at the moment.

I think Altair...

12 Replies

551 Views

Last post by turboscrew
Mon Feb 28, 2022 8:07 pm
where to get Crayford focuser repaired

Last post by John999R « Sat Feb 19, 2022 7:29 am
Replies: 7
by John999R » Thu Feb 10, 2022 9:45 am

First post

I was having issues trying to get my new Advanced ZWO focuser to work. I tried many times, but concluded it was likely defective. However, I decided...

Last post

Oh dear another toothless problem
These focusers rely on friction , if one adjust a bolt here and there then you will mess it up unless you know...

7 Replies

443 Views

Last post by John999R
Sat Feb 19, 2022 7:29 am
Orion 6x30 RACI replacement stalk?

Last post by JayTee « Sun Jan 23, 2022 1:00 am
Replies: 3
by pakarinen » Fri Jan 21, 2022 2:25 pm

First post

I have an Orion 6x30 that's a nice little finder - inexpensive and surprisingly sharp optics. But the stalk is about 6 inches long so it sticks way...

Last post

This might work for you.

3 Replies

6247 Views

Last post by JayTee
Sun Jan 23, 2022 1:00 am
New Diagonal Mirror

Last post by helicon « Wed Jan 19, 2022 3:44 pm
Replies: 3
by Jones » Fri Dec 24, 2021 8:10 pm

First post

Picked up this Celestron Diagonal in a box of parts off ebay.
The mirror did not look so good, but with a minor diameter of 30mm could not find a...

Last post

Nice find and hopefully by now you have made use of the new parts.

3 Replies

10933 Views

Last post by helicon
Wed Jan 19, 2022 3:44 pm
GPS replacement for Autostar????

Last post by Piet Le Roux « Thu Dec 23, 2021 2:08 pm
Replies: 1
by KCC07 » Wed Dec 22, 2021 12:36 pm

First post

Good morning...my first post so bear with me.

I have an ETX-125 that I like very much. I haven't used it in quite a while because my autostar is not...

Last post

Good day Ken,
You can replace the Autostar with a Audiostar controller but as far as I know there's no stock available and on the Meade site it was...

1 Replies

2457 Views

Last post by Piet Le Roux
Thu Dec 23, 2021 2:08 pm
looking for a new cc

Last post by SkyHiker « Sat Dec 11, 2021 3:48 am
Replies: 10
by yobbo89 » Wed Sep 29, 2021 2:35 pm

First post

any chance anyone has a 2.5'' cc and a moonlight ?

thinking about getting this , my moon light does have a 68 mm x1mm female thread , i'm guessing...

Last post

Great image Rob, glad it works out that well! Yea the illumination looks a bit off center but not by much.

10 Replies

7203 Views

Last post by SkyHiker
Sat Dec 11, 2021 3:48 am
Electronic Focuser for the Explore Scientific’s ED140 FPL53 140mm f/6.5

Last post by NoDarkSkies « Tue Nov 16, 2021 5:18 pm
Replies: 3
by NoDarkSkies » Wed Dec 23, 2020 3:07 am

First post

Looking for a Electronic Focuser for the Explore Scientific’s ED140 FPL53 140mm f/6.5

Anyone know what Electronic Focuser can be used on this...

Last post

Just an update to the Focus unit for this Telescope;
You can use the ZWO EAF using the PegasusAstro Motor Coupler Set 3mm-8mm (6PCS) PEG-MOT-COUPLSET

3 Replies

3918 Views

Last post by NoDarkSkies
Tue Nov 16, 2021 5:18 pm
Dew heater temperature?

Last post by Chich « Mon Nov 08, 2021 5:52 am
Replies: 4
by Chich » Sun Nov 07, 2021 5:29 am

First post

I found a lens heater that runs off USB. I just tried a 'dry run' and it gets up to 39 degrees after a few minutes. The scant paperwork with it says...

Last post

Thanks for the replies. It has no controller, but I can make one for it. Not sure why it would warm up so much. I saw it up online and took a...

4 Replies

3051 Views

Last post by Chich
Mon Nov 08, 2021 5:52 am
My New Portable Battery

Last post by AstroBee « Mon Nov 01, 2021 11:18 pm
Replies: 8
by JayTee » Thu Sep 09, 2021 11:59 pm

First post

Just picked this up from Harbor Freight yesterday. It's the Viking 12V Lithium Ion Jump Starter. It was on sale for $75. It's compact it's light...

Last post

Wow, 30Amp hours per night!?
I don't know much about AP, so that's that's a shocker to me 😆 but yeah I can see an on board computer and accessories...

8 Replies

3924 Views

Last post by AstroBee
Mon Nov 01, 2021 11:18 pm
Encoders...

Last post by OzEclipse « Sat Oct 23, 2021 7:47 pm
Replies: 11
by WilliamPaolini » Sat Oct 09, 2021 1:01 am

First post

What is the consensus for what the accuracy should be for good encoders for a mount? +/- what fraction of a degree?

Last post

As a practical guide, I purchased an ATM dob built by another member on this site.
It's an 18 f5.5, 2500mm focal length.
1 degree field in a Nagler...

11 Replies

4458 Views

Last post by OzEclipse
Sat Oct 23, 2021 7:47 pm
Light shield for an observing site?

Last post by astrowolf67 « Thu Oct 14, 2021 10:36 pm
Replies: 23
by notFritzArgelander » Sat Aug 28, 2021 6:43 am
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2
First post

Does anyone know if a portable light screen product exists? I've found these so far.

But I had in mind more of a portable wall rather...

Last post

Here is a light block wall I made from PVC, and a cheap Harbor Freight tarp. It folds in half, to store in a shed, but, with some creative thinking,...
23 Replies

7972 Views

Last post by astrowolf67
Thu Oct 14, 2021 10:36 pm
Mars filter 1.25"

Last post by SpyderwerX « Tue Oct 12, 2021 10:13 pm
Replies: 4
by Jones » Fri Sep 10, 2021 11:38 pm

First post

Found a new-old stock Mars filter on ebay. Bought mine a week ago, said he had 15 of them. Now down to 11. Been looking intently at Mars since 1988....

Last post

I also suggest the Baader Contrast Booster, the best Mars filter I've found, and I've had lots.

Agreed.

4 Replies

2528 Views

Last post by SpyderwerX
Tue Oct 12, 2021 10:13 pm
Universal Auto focus

Last post by Bearcatrp « Sun Oct 10, 2021 10:15 pm
Replies: 3
by Bearcatrp » Sun Oct 10, 2021 5:07 pm

First post

Does anyone make a universal electronic auto focus for most telescopes, specifically for mine listed in my signature? Would be nice not to have to...

Last post

Don't mind if its a separate controller. My old hands are not steady enough so wanting some kind of controller.

3 Replies

1990 Views

Last post by Bearcatrp
Sun Oct 10, 2021 10:15 pm
Coma Corrector Vs. Barlow

Last post by notFritzArgelander « Wed Oct 06, 2021 1:00 am
Replies: 1
by Refractordude » Wed Oct 06, 2021 12:23 am

First post

A barlow lens will increase the focal ratio of a telescope. So can a barlow lens replace the need for a coma corrector? It is my understanding that a...

Last post

A barlow lens will increase the focal ratio of a telescope. So can a barlow lens replace the need for a coma corrector? It is my understanding that a...

1 Replies

1764 Views

Last post by notFritzArgelander
Wed Oct 06, 2021 1:00 am
AT 72EDII with TS Binoviewer OCA 1.9 in two places

Last post by dagadget « Wed Sep 22, 2021 1:39 pm
Replies: 4
by dagadget » Mon Sep 20, 2021 1:10 pm

focuser.jpg 20210917_091947.jpg

In this topic we have an Astro Tech AT 72EDII Refractor with Supercharged TS Binoviewer with a Burgess 1.9 OCA on...

4 Replies

1867 Views

Last post by dagadget
Wed Sep 22, 2021 1:39 pm
Astromania 1.25" Superior Quality Multiple 5-Position Filter Wheel For Telescope

Last post by GCoyote « Sat Sep 18, 2021 5:18 am
Replies: 14
by GCoyote » Mon Aug 16, 2021 5:33 pm

First post

So I ordered the item described in the subject line which showed up in less than a week. No rush to open it since the weather is still crap....

Last post

You just missed it.
Sorry!

14 Replies

3870 Views

Last post by GCoyote
Sat Sep 18, 2021 5:18 am
Powering your Gear with a Hybrid F-150

Last post by OleCuss « Sun Sep 12, 2021 8:35 pm
Replies: 7
by OleCuss » Fri Sep 10, 2021 9:57 pm

First post

OK folks. This is not at all likely to be the way in which most amateur astronomers are going to choose to power their astronomical gear, but for...

Last post

OK, you may not have some of the capabilities my pickup has, but I greatly envy you that kind of gas mileage!

But I think I could get that kind of...

7 Replies

2357 Views

Last post by OleCuss
Sun Sep 12, 2021 8:35 pm
Sometimes The Least Expensive Piece of Equipment Can Be The Most Important

Last post by Refractordude « Sun Aug 15, 2021 2:52 pm

by Refractordude » Sun Aug 15, 2021 2:52 pm

I was finding it hard to observe without this head band. Sweat would get in my eyes and I was constantly cleaning my eyepieces. So I purchased a head...

0 Replies

1514 Views

Last post by Refractordude
Sun Aug 15, 2021 2:52 pm
Counterweight at the Visual Back

Last post by XCalRocketMan « Wed Aug 11, 2021 2:09 pm
Replies: 10
by XCalRocketMan » Mon Aug 02, 2021 6:53 pm

First post

I have a tandem setup on my AP1100 mount: EdgeHD11 with a WO GT102 APO on top. I currently have the ASI2600 mounted to the GT102. Everything is...

Last post

Thank you all for these great suggestions.

10 Replies

3008 Views

Last post by XCalRocketMan
Wed Aug 11, 2021 2:09 pm

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