Quark Combo at low focal lengths

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Starry Jack
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Quark Combo at low focal lengths

Post by Starry Jack »

With my f6.5 achromat and Aeties D-ERF Daystar recommends I use the quark classic with the 4.2x Barlow. But that much magnification scares me a bit. How about I get the quark combo and a 2.5x powermate and or also a 5x powermate for flexibility. Or I could use a focal reducer for the classic.

Does the quark perform well at f16.5 (combo with 2.5) and f26 (classic with a focal reducer)? Daystar says they like around the f30-40 range.

I am thinking of the 1.25" powermates only because I might be able to use the 2.5x in the 4" Mak for flexibility (I would transferring my D-ERF to that scope during those sessions).

Thanks,
Jack


Explore Scientific 152mm f6.5 achromat
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Quark Chromosphere f27 native, (f14 when focal reduced)
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Re: Quark Combo at low focal lengths

Post by Merlin66 »

Jack,
Don’t over think the issues....
Just go for the Chromo standard Quark, use it with your achromat with a suitable ERF and enjoy!!


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Re: Quark Combo at low focal lengths

Post by Starry Jack »

Hahahahahahaha! You've noticed that have you? It's a disease I tell you, a disease!!!

That is very sage advice.


Explore Scientific 152mm f6.5 achromat
Aeries D-ERF
Quark Chromosphere f27 native, (f14 when focal reduced)
Mallincam .5x focal reducer (large format)
12nm Filter
ZWO174 (IMX249 chip 5um)
Huge Sense of Adventure Viewing Creation
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Re: Quark Combo at low focal lengths

Post by marktownley »

Starry Jack wrote: Wed Jul 17, 2019 1:43 pm
Does the quark perform well at f16.5 (combo with 2.5) and f26 (classic with a focal reducer)? Daystar says they like around the f30-40 range.
Go with what Daystar says, don't over complicate it! I'd get the Quark with the built in 4.2x telecentric.


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Re: Quark Combo at low focal lengths

Post by Starry Jack »

Agreed. Thank you.


Explore Scientific 152mm f6.5 achromat
Aeries D-ERF
Quark Chromosphere f27 native, (f14 when focal reduced)
Mallincam .5x focal reducer (large format)
12nm Filter
ZWO174 (IMX249 chip 5um)
Huge Sense of Adventure Viewing Creation
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Re: Quark Combo at low focal lengths

Post by marktownley »

If you want a bit more contrast just stop the aperture of your scope down a bit.


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Re: Quark Combo at low focal lengths

Post by pedro »

I use my Quark Chromosphere with a FS60C F/5.9 and it works great


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Re: Quark Combo at low focal lengths

Post by Starry Jack »

Yippee!


Explore Scientific 152mm f6.5 achromat
Aeries D-ERF
Quark Chromosphere f27 native, (f14 when focal reduced)
Mallincam .5x focal reducer (large format)
12nm Filter
ZWO174 (IMX249 chip 5um)
Huge Sense of Adventure Viewing Creation
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