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Moderated Re: First clear night to try out my new G11T, I hope!


 

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Thanks, Michael. I have already experienced the collapsing leg thing. So far, the one thing I prefer about my CGX-L mount is the tripod legs can be locked with minimal effort. Last week when I mounted my C14 on my Losmandy mount for the first time, I kept wondering why the mount kept getting out of level. The legs were slipping and pushing into the grass. I have a 3/4 inch plywood square at the base of each leg in the photo. I am also cranking down those knobs tighter and almost sitting on the tripod to see if they are tight enough.

I have had my C14 edge for about a year and I have been using it more than?all my other scopes combined. It is big and awkward to move around but worth the effort, I think. I have been able?
to get some decent images of various things. When auto guiding was working well, and seeing was good, my C14 pulled out details and color that surprised me. It, kind of, hooked me on imaging
with the beast. The down side, is how much harder it is to make everything work well. Imaging with my little 80mm refractor seems effortless by comparison.

I am located in Salt Lake?City, Utah. My neighborhood is heavily light polluted, but an hour drive east or west gets me to, pretty decent, dark sites.?

I have been working on the back focus spacing. I need to find some way to vary the distance from my scope. I have been using Sony mirrorless full frame cameras, and they tend to expose any back focus errors, more than I would like.?

I always have fun, especially if I am away from my neighborhood in the desert to the west or mountains to the east. Getting out of town to do a great hobby can be a wonderful thing, especially
lately.?

If Losmandy was still making the Titan, I think I would have spent the extra cash just for extra stability while using my C14.?

Have a great evening, Michael, and thanks?for all the great information and help!

Jeff




From: [email protected] <[email protected]> on behalf of Michael Herman <mherman346@...>
Sent: Wednesday, August 26, 2020 8:08 PM
To: [email protected] <[email protected]>
Subject: Re: [Losmandy_users_io] First clear night to try out my new G11T, I hope!
?
Wow.? Great setup.? I'm not used to seeing a Titan RA axis.??

A few things to?consider:

Be sure your knobs holding the tripod sections in place are quite tight.? My C14's weight was slowly collapsing one leg, though I was sure it was tight... and if I had not caught it...yikes.??

You are in a grassy area.? Be sure your tipod feet are on solid?ground, like large flagstones.??

If using an EdgeHD be aware the back focus is ideally 5.75 inches past the rear lens.? There is not much room for a filter wheel or ADC optic.? If you try to extend your camera focal plane out past that, you can end up with a coma problem.? The normal SCTs don't have this particular focal plane issue.? But (Newtonians with) a Baader MPC also have the similar back focus constraint (that one is 55mm).? ?The penalties of "coma free" can come at a price.??

(Where are you located? You hinted at Utah, but....)

Have fun!

Michael

On Wed, Aug 26, 2020, 6:09 PM jeff marston <jeffmarston@...> wrote:


I am all set up and ready to go. For the last week, fires in California and Utah have made seeing anything an exercise in futility.?
Today, the skies have been blue, instead of brown, and the clouds are supposed to be few and far between. If seeing is decent
I hope to get some videos of Jupiter and Saturn. I made two attempts last week and weekend, but even stars directly overhead
were dim. Jupiter looked more like a giant Mars, with huge dust storms. I am hoping tonight will be great viewing and videoing.

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