Which tilt adapter and what about focus?

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bobmoss
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Which tilt adapter and what about focus?

Post by bobmoss » Mon Jun 06, 2016 9:29 am

I should be shortly receiving my new Quark and will be using it with an ASI120MM which I understand suffers from Newtons Rings and I'll need to get a tilt adapter.

I see there seems to be 2 tilt adapters out there, the Rowan Astronomy tilt adapter with a spherical joint and the Teleskop Express T2 Tilt Adjuster. The first one seems to have a lot more adjustment than the second. Is there much difference between the two? Which one do I need to get?

And what happens to focus if you use a tilt adapter, surely if I am tilting the camera one side of the image goes out of focus? Even the tiniest of movements can throw out your focus so I can't get my head around how a tilt adapter would work!

Thanks.

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marktownley
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Re: Which tilt adapter and what about focus?

Post by marktownley » Mon Jun 06, 2016 8:16 pm

I prefer the Teleskop express variant, easier to adjust.
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Astrograph
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Re: Which tilt adapter and what about focus?

Post by Astrograph » Mon Jun 06, 2016 8:36 pm

There are three I keep as follows;

The basic TS version. This is simple and apart from putting a bit tape around it to stop any stray light will do the job. Adjustment screws on the camera side.

Rowan. The spherical joint makes this light tight and keeps the camera more centered. However its not very useful with a Quark if the Quark is fitted with a T2 adapter in place of the eyepiece clamp. The reason being that the allen screws to adjust it are on the Quark side, not the camera side so there is actually no room to adjust it, so not suitable with a Quark in my opinion unless you put a T2 to 1.25" nose on it and put that in the Quarks standard clamp.

Daystar. This is curved tilt adjuster which has the most adjustment and can be adjusted by hand and locked with just two thumbscrews. Unfortunately its £139, but out of the three, its the only one I reach for because of its adjustment ranges and tool free nature.

As you have an ASI120 what you might want to try first is using the nose piece on the camera with the Quarks clamp. There should be enough 'wobble' due to the tolerances so you can wedge the camera to cause some tilt.

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Re: Which tilt adapter and what about focus?

Post by marktownley » Mon Jun 06, 2016 8:59 pm

Astrograph wrote:Daystar. This is curved tilt adjuster which has the most adjustment and can be adjusted by hand and locked with just two thumbscrews. Unfortunately its £139, but out of the three, its the only one I reach for because of its adjustment ranges and tool free nature.
Do you stock this Rupert?
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Astrograph
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Re: Which tilt adapter and what about focus?

Post by Astrograph » Mon Jun 06, 2016 9:56 pm

Yep, one of the many things waiting to go on the website......

bobmoss
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Re: Which tilt adapter and what about focus?

Post by bobmoss » Wed Jun 15, 2016 8:36 am

Thanks for the replies.
Astrograph wrote:There are three I keep as follows;
As you have an ASI120 what you might want to try first is using the nose piece on the camera with the Quarks clamp. There should be enough 'wobble' due to the tolerances so you can wedge the camera to cause some tilt.
That sounds like a good plan - I'll give that a go and then once I've got a bit of experience with it see if I actually need an adapter.

Thanks.

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