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Daystar quark full disk w/ asi290mm

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#1 WillYang

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Posted 29 July 2021 - 05:09 AM

Has anyone used a daystar quark chromo verison and asi290mm to achieve full disk imaging?

The daystar quark has a 4.3x barlow effect and the 290 sensor is a small chip.

 

Simulated by stellarium, I need about 50mm to 70mm focal length with the 290.

Perhaps a 50mm DSLR lens can meet my needs.

I can stop down the aperture by front mounted filter to make the whole system working around f30.

 

Can they work with the Daystar quark?

How do they perform?

Will I encounter any problem using this setup?

 

The full imaging train is:

50mm (or 70mm) DSLR lens, maybe a Pentacon M42 lens, canon EF mount lens, or Sony E mount lens.

But I think the Sony E mount lens could be not enough back focus (18mm flange focal distance) for the quark?

If possible I would love to use Sony E mount lens.

>

I guess I will need an extension tube?

I dont actually know what length the extension tube I need. Please advice me.

>

daystar quark chromosphere model

>

ASI290MM

 

I am not looking at the camera quark because I will use it with other refractor scope.

 

Thanks in advice!

 

Will



#2 BinoGuy

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Posted 30 July 2021 - 05:51 PM

Wish I could help, Will, but I do not have this set up.  I have a 60mm tube that can also work as a DSLR lens, so it is probably about the same focal length.  However, I do not have that same camera.  I am unable to achieve full disk natively.  Good luck

 

 

Clear skies, BG  °¿°



#3 hopskipson

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Posted 31 July 2021 - 08:28 AM

Has anyone used a daystar quark chromo verison and asi290mm to achieve full disk imaging?

The daystar quark has a 4.3x barlow effect and the 290 sensor is a small chip.

 

Simulated by stellarium, I need about 50mm to 70mm focal length with the 290.

Perhaps a 50mm DSLR lens can meet my needs.

I can stop down the aperture by front mounted filter to make the whole system working around f30.

 

Can they work with the Daystar quark?

How do they perform?

Will I encounter any problem using this setup?

 

The full imaging train is:

50mm (or 70mm) DSLR lens, maybe a Pentacon M42 lens, canon EF mount lens, or Sony E mount lens.

But I think the Sony E mount lens could be not enough back focus (18mm flange focal distance) for the quark?

If possible I would love to use Sony E mount lens.

>

I guess I will need an extension tube?

I dont actually know what length the extension tube I need. Please advice me.

>

daystar quark chromosphere model

>

ASI290MM

 

I am not looking at the camera quark because I will use it with other refractor scope.

 

Thanks in advice!

 

Will

The small aperture will really hurt resolution and for the size of the pixels, you will want to be closer to F/11.




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