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ThomasHu

Mono:

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ThomasHu

Ha:SkyRover 102ED F/7 +SM90+QHY5-III-174MCamera
CaH:SkyRover72EDAPO F/6+ES PM2X+DaystarCaHQuark+QHY5-III-174M

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ThomasHu

SkyRover102ED+SM90+TeleVue3X+QHY-5-III-290M Cmos Camera

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ThomasHu

with QHY5-III174M&178C Cmos Camera
20181106

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20181107

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ThomasHu

A Photo of the test report

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ThomasHu

Valery wrote: ↑Tue Oct 30, 2018 3:16 pm
ThomasHu wrote: ↑Tue Oct 30, 2018 12:59 pm
Valery wrote: ↑Tue Oct 30, 2018 12:03 pm What is the thickness of the filter?

It's designed for 40nm FWHM~
You do mean it's spectal bandwidth. I asked the thickness of the glass itself. 6mm, 10mm or 12mm ?

Valery

My friend replied me. It's 4.5mm

ThomasHu

What is the thickness of the filter? It's designed for 40nm FWHM~ You do mean it's spectal bandwidth. I asked the thickness of the glass itself. 6mm, 10mm or 12mm ? Valery I'm sorry I don't use English very often and misunderstand your question. I need to ask another friend who will make the extens...

ThomasHu

40 nm FWHM in both Ca K and Ha is amazing. What far goes the blockage in IR ? 1000 nm ? 1200 nm ? Any idea of the optical quality (P-V or rms wavefront) ? 2 bands，393nm and 656nm,40nm FWHM for each. Maybe 1000 nm or 1050nm ,because I did not get any more information above 1050nm P-V I have not any ...

ThomasHu

Valery wrote: ↑Tue Oct 30, 2018 12:03 pm What is the thickness of the filter?

It's designed for 40nm FWHM~

ThomasHu

I tried with my 60mm f/6 EDAPO this morning. With a 2X barlow,it was suitable with the QHY5-III 174M in CaH-Quark.

It's really surprised me that there's some small proms.

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ThomasHu

The diameter of this ERF is 8.5 inch. It may get f/11 with my C925HD,and with a 2x barlow to use the Combo Quark.
Maybe I need to get a focal reducer with them.

ThomasHu

Looks good ! Any idea of the optical quality ? Any transmission curve available ? My friend told me that they choose 5 points for testing. The report shows that the coating is well-distributed.The Ha channel is about 87~90% transmission and the Ca-K/H channel about 84~85%. They made Ha-ERF for the ...

ThomasHu

Sunny but a low activity day.
Photo with my new QHY5-III 174M cmos camera.

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ThomasHu

I booked a binchannel ERF from an optical engineer friend about 4 months ago. And I got my new ERF's picture this morning.It's really beautiful. The ERF was designed by 80% and above transmission near 393nm and 656nm. BinChannelERF.jpg I'm preparing to use it with a C925HD and Quark(CaH and Ha) and ...

ThomasHu

And I'm interesting in which 1.5x Barlow do you use? Hello! I used a standard GSO 1.25" 2x barlow and unscrewed the lens off the barrel and screwed that lens directly onto the nose of the camera. I took two images and scaled them and it was approximately 50% the size, so I knew I was in the 1....

ThomasHu

hi Marty:
Beautiful shots.
And I'm interesting in which 1.5x Barlow do you use?

Best regards,

Thomas

ThomasHu

Thank you all so much!!!! ：）

ThomasHu

TheSkyBurner wrote: ↑Mon Oct 15, 2018 8:01 am Nice images, is the CaH filter made by daystar?

yes,with Daystar CaH & Coronado SM60 Ha filters

ThomasHu

TheSkyBurner wrote: ↑Mon Oct 15, 2018 8:01 am Nice images, is the CaH filter made by daystar?

yes,with Daystar CaH & Coronado SM60 Ha filters

ThomasHu

Sunspots looks like sesame seed~~~
So small...

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with TeleVue PM2.5x

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ThomasHu

Sunspots looks like sesame seed~~~
So small...

using a 80 APO with QHY178C camera

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with TeleVue PM2.5x

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ThomasHu

ThomasHu

Happy Birthday Alexandra !:D

ThomasHu

ThomasHu

There's not enough time to take ha photos this morning.
So there's CaH only.

ThomasHu

There's several minutes not so cloudy this morning.So I tried to take these photos~

ThomasHu

Fantastic!!! :bow looks very hot on that games court though, have you tried setting up in a field? I think the Quark is designed for visual use, it should be perfectly safe. Alexandra Thank you, Alexandra. I read the daystar website today .Yes,i think we can try it in the visual way. But sadly it i...

ThomasHu

marktownley wrote: ↑Fri Aug 10, 2018 1:44 am Excellent results Thomas. Can you see anything visually with the CaH Quark?

We did not try visual observation ,because the CaH line(3968.5Å) is nery near the UVA line, we need to protect our eyes firstly~

ThomasHu

krakatoa1883 wrote: ↑Thu Aug 09, 2018 7:52 pm Nice images… which refractor have you used ?

Thank you~
A 80mm f6 apo with a 60mm aperatore.

Thomas

ThomasHu

ffellah wrote: ↑Thu Aug 09, 2018 11:33 pm Very nice images, Thomas.

Franco

Thank you

,Franco

Thomas

ThomasHu

I got my new daystar Ca-H today,so I try it with my student at our school.

ThomasHu

It was sunny in0712,but it is rainy today.
A new sun spot is being generated in the sun,so i took these photos

ThomasHu

20180626

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20180628

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ThomasHu

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ThomasHu

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ThomasHu

In fact I failed to take photo for the Sun this morning.
My friend David Wong took this photo with his PST and I processed it for him.

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ThomasHu

A surprise sunny morning~~~
But cloudy afternoon~

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ThomasHu

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ThomasHu

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ThomasHu

Yesterday is a cloudy day, but it's a sunshine day today.
I saw the moon this morning and try to take a photo but fail.

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ThomasHu

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ThomasHu

Almost Nothing...

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ThomasHu

Montana wrote: ↑Fri Nov 03, 2017 12:42 pm Some lovely prominences still showing through, nice work long may your sunny weather continue
Alexandra

It's a cloudy day today~
I feel so sad~

ThomasHu

It's a little cloudy today.so there's a little off band:(

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ThomasHu

That pic is very sharp Thomas, with the proms and disk details nicely focused and processed. Well done!!! As Mark mentioned the disk lost some details with the tuning and I might shorten the exposure a bit, but still looking very good. Brian Thank you for your advise~~ I found in my SM60(in fact it...

ThomasHu

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ThomasHu

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ThomasHu

I now fully appreciate your images, with fantastic detail they are brilliant :bow :bow You will never suit everyone's colour taste, do what you think is nice :) I was just wondering about the green tint yesterday :) it is all fun, if they were all the same colour it would be boring :) Alexandra Tha...

ThomasHu

Is it a little better for the color today?

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ThomasHu

These have great detail when opened in another tab and viewed at full size, I really enjoyed them :hamster: :bow On another note (I'm not being rude by the way, just interested) but I was wondering if you were colour blind? It is a theory of mine that folks with this colour Halpha full discs have a...

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