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Old 14-10-2018, 07:27 PM
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Lognic04 (Logan)
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What to do about scopes

Hi all,
I have been thinking recently about selling my takahashi MT-160 to make an 8 inch f2.8 astrograph/buy a widefield frac, OR adding a moonlite to my tak so i can finally get proper infocus stars/full automation.
I am currently in a widefield/nebula/ha mood
What would you do in my situation?
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Old 14-10-2018, 07:30 PM
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LewisM
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Oh gawd...how many times I offered

I do have an autofocus system (Pegasus) I have been considering to sell. Make me an offer I won't refuse (it even has a Tak pinion sized collet, so it is ready to go)
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Old 14-10-2018, 07:34 PM
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Atmos (Colin)
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You can go widefield by going down the black hole that is mosaics
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Old 14-10-2018, 07:58 PM
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Quote:
Originally Posted by LewisM View Post
Oh gawd...how many times I offered

I do have an autofocus system (Pegasus) I have been considering to sell. Make me an offer I won't refuse (it even has a Tak pinion sized collet, so it is ready to go)
cmon Lewis...

Its not that, my autofocus system i think works fine, its the crappy focuser is wobbly and has a ton of backlash. Also how would you mount the pegasus?

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You can go widefield by going down the black hole that is mosaics
with these crappy stars, in my dreams
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Old 14-10-2018, 08:17 PM
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I told you I'd adjust the focuser free, but would you listen? Noooo....

It's REALLY simple to adjust. REALLY
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Old 14-10-2018, 08:20 PM
glend (Glen)
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If you sell a nice Tak to build a DIY scope, it would certainly be a bad investment decision. You will never, ever, get back the cost of the build; so think about that.
There is a new Celestron 8" RASA, which would give you that speed, and potentially have resale value, but they are not available in Australia yet.
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Old 14-10-2018, 08:25 PM
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Quote:
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I told you I'd adjust the focuser free, but would you listen? Noooo....

It's REALLY simple to adjust. REALLY
Could you send instructions possibly?

also i think part of the wobbliness is the bent pinion and crappy mounting of the stepper.
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Old 14-10-2018, 08:28 PM
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No - it's a matter of feel and checking which of either the grub screw, teflon pad, bottom tensioner screws etc is the issue.

Pinions are easy to straighten - another thing I can do easily.

Take the focuser off, post it up, I'll fix it free of charge and post it back to you. Turn around of maybe a day maximum.

Considering it's sordid history, ANYTHING may be wrong with it Logan. It's the THIRD Tak focuser from "HIM" I have heard of that was BADLY adjusted or messed with (just ask Matt about Phil's CN212 focuser as received ex-Bentleigh)
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Old 14-10-2018, 08:32 PM
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Thanks Lewis. My issue is currently my stepper mount relies on using the 2 pinion tensioner screws to hold the stepper. Its either that or araldited to the tube!
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Old 15-10-2018, 06:37 AM
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Anyways, anyone else think I should switch scope?
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Old 15-10-2018, 07:42 AM
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yep grab a royce conical short f/l mirror with the cash from sale & build a scope up around it
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Old 15-10-2018, 08:07 AM
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Question is how can i make it rigid enough for imaging at f2. something?
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Old 15-10-2018, 11:05 AM
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Quote:
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Question is how can i make it rigid enough for imaging at f2. something?
Carbon fibre
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Old 15-10-2018, 11:40 AM
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get it 3D printed in carbon/titanium
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Old 15-10-2018, 12:03 PM
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Or you COULD actually take some baby steps and get a GOOD 8" Newt and a GOOD mount.

Just sayin'...
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Old 15-10-2018, 12:33 PM
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I am planning on getting a new mount definitely, but i like imaging witht he tak for now!
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Old 15-10-2018, 02:07 PM
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this should be stiff enough, SDM103
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