Help with camera adapter

[SwingBopper]

I have a 1000 mm focal length Meade scope and I have an EOS Camera mount; but the interior threads on the mount are way too big for the threads on the scope. This was the only EOS camera mount I could find. Would someone point me to a source for whatever adapter I need? The threads on the scope measure about 1 3/8 inches or 35 mm across on the outside. The interior diameter going into the scope measures just under 1 inch about 24 mm. Thanks!

[Adrena1in]

Is that a SCT? Someone with knowledge of the scope will be more likely to help, but I'm guessing you need something like the "Deluxe SCT T-mount camera adaptor " found about halfway down this link (http://www.astro-engineering.com/LX%20SCT/accessoriesforme.html). Don't know for sure though, so don't rush out and buy one just in case it's not the right thing.

[SuzyView]

I moved this to accessories because more people who would know come here. If no one responds to you before a few days is up, give me a pm and I will move it again.

[SteveInNZ]

What's written on the front of the lens (focal length, f-ratio, etc) ? I have a Meade 1000mm lens but it looks a bit different to that one.

The usual SCT thread is 2"x 48 tpi. If the hole in the end of yours is about 35mm then it may be a C-mount for a video camera. It looks as though it may have a SCT to C-mount adapter on it so you could see if that unscrews to reveal a 2" thread. If so, you'll want the SCT T-mount camera adaptor such as the one at Adrena1in's link.

Steve.

[Jon]

Check out (first Google hit) this (http://www.opticsplanet.net/meade-ts-07363.html). Sounds like you already have the EOS T mount and just need the scope adapter.

[SwingBopper]

Thanks for all the replies. I believe this must be an ETX since the diameter of the rear cell is less than 2". It looks like I need the ETX Adapter in Jon's link. Thanks again for everyone's help!
edit: I found a similar scope that sold on eBay; it is a model D-90, discontinued of course.

[Nighthound]

Shame there isn't something shorter, that's a very long adapter which could cause some vignetting issues, much like when shooting through a telescope eyepiece. If it was a standard SCT thread there are some much shorter options. You probably won't have as many options for a discontinued product unless you have something custom made. Good luck, hope it works well for you.

[SwingBopper]

Shame there isn't something shorter, that's a very long adapter which could cause some vignetting issues, much like when shooting through a telescope eyepiece. If it was a standard SCT thread there are some much shorter options. You probably won't have as may options for a discontinued product unless you have something custom made. Good luck, hope it works well for you.

Hmmm... I see your point. Well what I want is a 1000 + mm scope to use on my 40D or 5d2 and I had this one laying around for a couple years and thought it might work. Would you or anyone else recommend a better option in the less than $1,000 range?
edit: I should be more specific in that I like a reflector of this design because of it's small size, I'd be using it for nature photography, birds, animals etc. and maybe a moon shot now and then.

[Nighthound]

Hmmm... I see your point. Well what I want is a 1000 + mm scope to use on my 40D or 5d2 and I had this one laying around for a couple years and thought it might work.Would you or anyone else recommend a better option in the less than $1,000 range?
edit: I should be more specific in that I like a reflector of this design because of it's small size, I'd be using it for nature photography, birds, animals etc. and maybe a moon shot now and then.

While some reflector designs offer more compact optical tubes they do require knowledge of collimation. The mirrors can be misaligned by everyday use, i.e. moving around/ carrying. They can be realigned if you know how and have the tools for the job. Refractors on the other hand are much less likely to be misaligned because the lenses are fixed. Unfortunately to get 1000mm of focal length will require a fairly long tube which defeats your goal of portability, especially for nature. I shoot a lot of nature/birds, I use my 100-400L and 500L. I can get 700mm-1000mm from the 500 with the teleconverters. I'm not suggesting the 500L as it is way out of your budget range but rather wanted to make the point that 400-500mm is a very good range for wildlife. Unfortunately that falls way short of your astro ambitions. But it sounds like nature is your priority so I think you might want to consider finding something in the middle say 600mm in a refractor with at least ED glass. The down side is focusing will be all manual with a refractor or reflector and you'll need a solid mount/tripod to help with using a sizable optical tube in the field.

When I purchased my 100-400L I was right where you are now, trying to fill two needs with one budget. I ended up with the lens for birding/nature and a couple telescopes for astro work later on. William Optics has some refractors in your range that are very nice. I prefer this one because of the quality control and build of these scopes plus I've seen it in person, it's a beauty. Great focuser too, and that's a definite plus. Scroll down to see the mount/tripod shot as an example. 560mm:
http://www.optcorp.com/product.aspx?pid=1-599-2-83-995-9645

Another with a bit more FL(620mm):
http://www.optcorp.com/product.aspx?pid=1-599-2-83-995-8409

Keep an eye on tube lengths and weights when looking around as well.

[MidnightSun]

I had the same problem trying to focus with my 1000mm newt. I had a 2" focused adapter for an Olympus OM-1 and got a Canon T-ring. I split the two adapters apart, physically, and used epoxy to glue them together. Using the 2" focuser threads from the OM-1 adapter and the EOS ring for the Canon. A lo-profile adapter, something I searched for far and wide and could never find. It works like a charm.:) You may be able to find something like that thaat you can fabricate to fit the size focuser you have on that scope.