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eyepiece adaptor for photography
Mar 19, 2015 21:05:18   #
Albuqshutterbug Loc: Albuquerque NM
 
I was asked how the eyepiece adapter work.
I'll post pics of what I use for 1.25 connectivity to the 6" reflector that came with my Advanced VX.
I have to post here first and then attach from the phone so bear with me..
The adapter that I have is a kit that allows me to use the T-mount with a 1.25 adapter, the T-mount directly to the tube or with an additional tube that a ocular lens goes into for added magnification.
I haven't done much with the reflector but the best shots so far have been pure afocal, no lenses added in..
I hope this isn't too confusing or disjointed.

The eyepiece adapter comes off and the tmount screws on
The eyepiece adapter comes off and the tmount scre...
(Download)

With adapter removed and t-mount in place
With adapter removed and t-mount in place...
(Download)

The t-mount and 1.25" snout or adapter
The t-mount and 1.25" snout or adapter...
(Download)

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Mar 20, 2015 10:40:29   #
SonnyE Loc: Communist California, USA
 
It looks like the camera mounts up close to the focuser and tube then.
Does the telescope's focus still operate the snout to fine focus for the exposure?

Do you ever use the 2" eyepieces? (Not on this scope, but on others?) And do you find them easier to view with?
Reviews (taken with a grain of rock salt) state the 2" eyepieces are easier to view through.
Is that your experiance?

Lastly, SCT... or 6" refractor?

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Mar 20, 2015 11:43:44   #
Albuqshutterbug Loc: Albuquerque NM
 
SonnyE wrote:
It looks like the camera mounts up close to the focuser and tube then.
Does the telescope's focus still operate the snout to fine focus for the exposure?

Do you ever use the 2" eyepieces? (Not on this scope, but on others?) And do you find them easier to view with?
Reviews (taken with a grain of rock salt) state the 2" eyepieces are easier to view through.
Is that your experiance?

Lastly, SCT... or 6" refractor?
It looks like the camera mounts up close to the fo... (show quote)

Focus is done with the telescope focus rack.
I use the 2" more than the 1.25 on my 11" , 8" SCT and on my 5" Orion refractor almost all the time. I have a 1.25" 30mm Celestron Ultima eyepiece that is extra sharp that I sometimes start with. I usually go back to the twos though. I have both of the Celestron sets, the 1.25's are Plossls and the 2" are ELux lenses.
The pics are of the 6" reflector that came with the tripod package.

This is the adapter that I initially bought.
http://www.amazon.com/Deluxe-Telescope-Camera-Adapter-Canon/dp/B0053ZJW5G

This is the 2" adapter that I use on the SCT's it lets the camera mount just like adding a lens to the diagonal.

http://www.amazon.com/Telescope-Camera-Adapter-UltraWide-Canon/dp/B002F8Q2ZC/ref=sr_1_2?s=electronics&ie=UTF8&qid=1426867071&sr=1-2&keywords=canon+2%22+telescope+adaptor

Lastly the adapter for Nikons.

http://www.amazon.com/Deluxe-Telescope-Camera-Adapter-Nikon/dp/B0053ZUW28/ref=sr_1_1?s=electronics&ie=UTF8&qid=1426867168&sr=1-1&keywords=nikon+telescope+adaptor

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Mar 20, 2015 12:23:08   #
SonnyE Loc: Communist California, USA
 
Thank you very much for your help with this. I hope the explanation will help others wondering, but afraid to ask... ;)

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Mar 20, 2015 20:44:06   #
JimH123 Loc: Morgan Hill, CA
 
SonnyE wrote:
It looks like the camera mounts up close to the focuser and tube then.
Does the telescope's focus still operate the snout to fine focus for the exposure?

Do you ever use the 2" eyepieces? (Not on this scope, but on others?) And do you find them easier to view with?
Reviews (taken with a grain of rock salt) state the 2" eyepieces are easier to view through.
Is that your experiance?

Lastly, SCT... or 6" refractor?
It looks like the camera mounts up close to the fo... (show quote)


I have an 8" reflector with a 2" focuser. I find that I get vignetting when using my full frame camera in prime focus position. I have no such problem with the crop sensor camera. Some scopes come with a 3" focuser and that would probably solve the vignetting problem.

A also find the 2 speed focuser is quite easy to get good focus. It would be horrible to do it with just the coarse only.

I also need to use a coma corrector with the scope. It inserts in the 2" holder in front of the camera. With a F3.9 reflector, the edges don't look so good, but with the coma corrector, stars are pin points from edge to edge.

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