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Quark: AR12886 Photosphere/Chromosphere Blink

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#1 SgrB2

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Posted 19 October 2021 - 12:55 PM

Unpowered Quark for Photosphere.  Data taken on10/19/2021.

 

Cheers,

SgrB2

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#2 MalVeauX

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Posted 19 October 2021 - 12:58 PM

Great comparison!

Very best,


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#3 BinoGuy

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Posted 19 October 2021 - 01:03 PM

@SgrB2. What size tube and focal length?  I'm guessing maybe a 90mm, and maybe F6.7 before the Quark barlow?

 

 

SgrB2


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#4 SgrB2

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Posted 19 October 2021 - 02:56 PM

The data were taken with a SkyWatcher 80 mm f/7.5, a Chromo Quark,

a 2" GSO focal reducer operating at 0.75x, and a mono ZWO 178 camera.

No Newton's Rings were observed with this configuration.  A flat was

applied and no camera grid pattern was observed in the resultant

images.


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#5 rigel123

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Posted 19 October 2021 - 07:46 PM

Nice!


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#6 YossiZ

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Posted 20 October 2021 - 12:20 AM

Unpowered Quark for Photosphere. Data taken on10/19/2021.

Cheers,
SgrB2


Very nice.
Let me know if I understood correctly:
Using the Quark unpowered is basically like white light with a solar film?
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#7 SgrB2

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Posted 20 October 2021 - 04:32 AM

Very nice.
Let me know if I understood correctly:
Using the Quark unpowered is basically like white light with a solar film?

Not at all.  My observations only see a little piece of
the continuum near 6563 Angstroms but it is a good
representation of the much larger continuum seen by
white light using solar film.  So why is my Quark
able to do this trick when other Quarks may not?

My Quark was rejected because it shows chromospheric detail
when at ambient temperatures; it was rejected because it
probably would not be temperature stable enough to stay
on-band when environmental temperature conditions change.
Thus, when not tuned, the Quark sees the full bandwidth of
the blocking filter which is 4 to 8 Angstroms. I am pleased
that the etalon reject that I have gives me the opportunity
to use it for both photospheric and chromospheric imaging!  
So far (a little over a year), the Quark seems stable when
at power.

Cheers,
SgrB2


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#8 gustavo_sanchez

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Posted 20 October 2021 - 09:46 AM

Not at all.  My observations only see a little piece of
the continuum near 6563 Angstroms but it is a good
representation of the much larger continuum seen by
white light using solar film.  So why is my Quark
able to do this trick when other Quarks may not?

My Quark was rejected because it shows chromospheric detail
when at ambient temperatures; it was rejected because it
probably would not be temperature stable enough to stay
on-band when environmental temperature conditions change.
Thus, when not tuned, the Quark sees the full bandwidth of
the blocking filter which is 4 to 8 Angstroms. I am pleased
that the etalon reject that I have gives me the opportunity
to use it for both photospheric and chromospheric imaging!  
So far (a little over a year), the Quark seems stable when
at power.

Cheers,
SgrB2

Interesting. How do you know it was rejected? How was the process of determining that and you keeping it? Quite intriguing.



#9 SgrB2

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Posted 20 October 2021 - 12:06 PM

Interesting. How do you know it was rejected? How was the process of determining that and you keeping it? Quite intriguing.

All the Quarks are rejects (i.e., they didn't measure up to the guaranteed

quality of the Quantum models -- for example, those at GONG sites).

You can read about the quality control standards for the Quantum

models here:

 

https://www.daystarf...m/Quantum.shtml

 

Cheers,

SgrB2 


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#10 gustavo_sanchez

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Posted 20 October 2021 - 06:59 PM

Ok, got that. So all Quarks doesn’t measure up to Quantum standards. But then, what made you conclude that your Quark was more of a reject than other Quarks? It was on your own, or did Daystar provided data?


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#11 SgrB2

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Posted 20 October 2021 - 08:07 PM

Ok, got that. So all Quarks doesn’t measure up to Quantum standards. But then, what made you conclude that your Quark was more of a reject than other Quarks? It was on your own, or did Daystar provided data?

 Daystar doesn't provide any data on the Quark you buy and it

 is sold essentially "as is" unless it can't tune at all or has some

 other obvious flaw that would preclude its use.  Delve into the

 Daystar site that I gave above to find out what their policy is

 on buying a Quark.  The temperature stability argument for

 rejecting it seems reasonable to me since I can't find anything

 else out of the ordinary.  I could be wrong but am never

 in doubt.wink.gif

 

 Cheers,

 SgrB2


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