All Activity

You need a 1.25" diagonal and an eyepiece like the one you highlighted, 25-32mm will do. Someone has unscrewed the diagonal without loosening the two silver securing screws causing the diagonal nosepiece to be retained in the visual back of the telescope. Loosen these and remove the old nosepiece. Regarding power you will have to decide whether you want to run on AA batteries or an external source of 12v

FWIW, the SM125 ED is manufactured to a minimum Strehl of 0.92. When considering Strehls, 0.8 is diffraction-limited 1/4 wave, 0.92 is very good, 0.95-0.98 is exceptional, and 0.98+ is essentially perfection. HTH, Steve

Same issue, that’ll teach me to keep up to date! 🤣

I used a Japanese made ‘Green Federal’ 1:2.8 stopped down to F4. It’s an old M42 with adapter for Canon which I got from eBay a few years ago, think it was about £20 😊

Cool. Thanks for that. i believe the AZGTI can handle up to 5Kg payload and I’m not putting anything too heavy on it so should be okay. The Ioptron seems to be the one to get if it doesn’t move when locking everything down. Will check out the Minitrack so thanks for all your help.

Ty for this but I have a lot more reading to do before attempting this side project. Maybe when I run out of galaxies

A picture worth a thousand words , so heres 2k 😄 Not my pictures , you find them on Agena Astro - link atached. In the diagram is SCT but as far as I know is the same for MAK : 1) Thread adapter to 1.25" holder to OEM diagonal to eyepiece 2) Supa-Dupa diagonal already fitted with thread adapter ( Named firms with mucho $$$ involved) to eyepiece Since you are doing it for the kids , maybe 1) is the way to go. Choosing and Using 2" Diagonals for Schmidt-Cassegrain and Maksutov-Cassegrain Telescopes (agenaastro.com) EDIT: If you unscrew the two silver knobs , does the silver threaded tube comes out ? Looking a bit closer it looks like the nosepiece of a diagonal that was unscrewed.

Thanks! That was beginners luck. I think seeing must have been pretty good that evening, struggled to match it since. From memory your barlowed focal ratio should be 4x to 5x your pixel size. So for my 2.4 micron camera, f12 is a nice ratio, which is 2x barlow and f6 scope. The resolution of the 90mm scope supports that as well. For my 3.75 micron cameras, f15 to f18. This means 3x barlow, and is very seeing dependant Good lunar requires pin sharp focus. Use the nask on a bright star or planet. Video with short exposures and reduced frame size for fast frame rate. I don't shoot using the full sensor, but use a smaller region. You can do this with a dedicated astrocam, not so with a dslr from memory

So, if you have an DS 50 mm and BF1200 you can make also you own solar telescope.Only thing you need is a 50 mm refractor / achromat telescope with 2" focuser....right? Thanks.

I found the same AI Denoise problem with Windows 10 displaying the ”Runtime Error” on the stand alone version. My PC running Windows 10 22H2 (OS Build 19045.4291), basically with the latest updates, and has the problem but my observatory PC, which never gets updates and is not online just the local LAN (and only connected to the WEB to download things like these AI models) is version 19O3 (OS Build 18362.535) very old, and GraXpert 3.0.0 runs on it without problems... goes to show that being up to date with Windows updates is not always beneficial… I’d say quite rarely so when Microsoft is involved. This is a known problem to the developer so I’m sure version 3.0.1 is just around the corner.

Could the single screw in the eyepiece holder cause some newtons rings? I remove the eyepiece holder and attach my Hypercam 178 to the revealed T thread. That's the only way I can get focus! I do need to use a spacer as well as I've a Starlight focuser with very limited focus range. It's much better than the original helical focuser.

A diagonal is missing, possibly some sort of finder, maybe the handset ( I don't see one) and definitely the user manual, the telescope is mounted back to front.

It’s arrived 😁. My Atlas of the Messier Objects Second Edition was delivered today and having browsed the content I am overjoyed.

i actually thought the moon a pretty dull target to image, but your images are nothing short of amazing.

Apart from a brain it seems 😁. I haven't had the telescope out in years. It's a celestron Nexstar 127 mak. It's dust covered and I presume the kids have taken pieces from it. They're now at an age that they want to look at the moon etc. I could hunt the house or be lazy and buy new bits. I'm leaning towards buying new bits so I can have it working for the weekend. Please tell me what I need. I was going to order This eyepiece. And This power cable. What else am I missing? Links on Amazon prime would be most helpful and I'd owe you a pint 🍻 A 90 degree mirror? Although I think there's something else I've missed Thanks in advance

yes i've read nice things about the diagonal ... as for the clamp , the originals were not bad but of course the dual knobs on the ADM are preferable

That's good to hear, let us know how it goes, I've yet to update my dedicated phone for my scope yet. Clear skies Lee

Maybe try a 2D "fluid" head (the kind used by video makers) ? Mine handles up to 4-5kg, but there are some more robust ones which can handle 10kg and even more, and you usually don't pay the "astro tax" on them, so you may get a very good one for the price of your SW/Bresser/iOptron/Omegon wedge. I'm using mine with a Minitrack LX3 plus camera and lens (~3kg total) and it's a breeze to setup and lock the altitude, with no shift while locking, and no play once locked. YMMV. PS : of course you would need a good tripod and photo plate to fit, if you don't have them already.

I am the same so far, highly pleased with my initial handle and look through session.

Thanks Hughsie, I. Just noticed the front lens part of the Asi 120mm screws off. Will try it next sunshine we get but are the internal reflections coming from the Lunt optical train or does the camera lens window also add newtons rings? It would be quickly swapped into the Lunt eyepiece so little chance of dust. Anyone tried this?

That Bresser payload is only 5Kg I believe so you'll be limited on what you can mount onto it. That is the ioptron one. There is a more "advanced" ioptron wedge marketed as the SGP version for their tracker, never used it though. One is on eBay from overseas but by the time you add in import tax it'll be closer in price to the WO one.

My Astigmatism is 1.5 if memory serves me again = or - I have no idea. No modification, just with the eyecup fully down so far. Sadly weather has stopped the chance for mor testing.

I like it because it is story related, Its Folklore and that is something handed down by word or story. If it was scientific, then it would not be Folklore.

im gonna go look at astro tools see how big saturn and jupiter seem in my fov. i have a 600d 4.29 pizel size even with a 5x barlow, jupiter looks about 2 x 2 pixels in astronomy tools

I find the SL to be an excellent EP: sharp and flat across the FOV. I honestly have nothing negative to say about it.